Electric horizontal hydraulic jack

Abstract

The invention discloses an electric horizontal hydraulic jack and belongs to the technical field of hoisting facilities. Comprising a jack body; the pressing handle is hinged to the front end of the jack body; the lower end of the pressing hand rod is hinged to the pressing hand, and the holding handle is connected to the upper end of the pressing hand rod; the battery pack is arranged on the grip; the hand-pressing handle is characterized in that the handle comprises a left holding shell petal and a right holding shell petal, a left holding cavity is formed at the upper end of the left holding shell petal, a battery pack left insertion supporting seat is formed on the front side of the middle of the left holding shell petal, a hand-pressing rod left connecting arm is formed at the lower end of the left holding shell petal, a right holding cavity is formed at the upper end of the right holding shell petal, and a battery pack right insertion supporting seat is formed on the front side of the middle of the right holding shell petal. The left connecting arm and the right connecting arm of the pressing hand rod are jointly connected with the upper end of the pressing hand rod in an embracing mode, and the battery pack is matched with the opposite sides of the left inserting and matching supporting seat and the right inserting and matching supporting seat of the battery pack in an inserting and pulling mode at the same time. The device has the advantages of ideal modularization effect, reduced use cost and saved resources; and damage caused by accidental falling objects is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of lifting facilities, and particularly relates to an electric horizontal hydraulic jack. Background Art

[0002] The aforementioned electric horizontal hydraulic jack mainly but not absolutely refers to an electric horizontal hydraulic jack powered by a battery pack. As is known in the industry, in the electrification system of a horizontal hydraulic jack, the battery pack is the core energy supply unit, and its advantages are as follows: it can meet the requirement of quickly lifting heavy objects (such as vehicles typically) in a one-key operation mode, thus greatly reducing the physical consumption of the operator and significantly reducing the operation intensity. This is more user-friendly for female users; since it can get rid of cable constraints, it has good flexible mobility. Also, since the battery power supply does not require an external power source, it is very conducive to use in environments such as garages, outdoors, and power outages; since it can be rechargeable (if it is a lithium battery, it can support hundreds or even thousands of charges), the use cost is relatively low; it has a wide range of applicable scenarios, such as the chassis of a horizontally low-designed vehicle (such as a sports car), and can also be applied to construction and industrial equipment, etc.; it is easy to maintain. For example, an intelligent battery pack can display the power and / or faults, thus reducing the occurrence of embarrassing situations that affect use.

[0003] Precisely because the electric horizontal hydraulic jack equipped with a battery pack has many advantages not limited to the foregoing, it has attracted more and more attention. Although it was first tested in the market by Europe, Japan, German JOSAM (in 2014) and American Omega (in 2016), and China has also continuously supplied the market in a limited quantity since 2018, technical problems such as the perfection of the structure, the reliability and safety in use, and the foldability in the non-use state of storage are still in the stage of being committed to improvement.

[0004] Regarding the publicly disclosed information in the literature, Document A. US Patent US2023 / 0391590A1 recommends a "ground maintenance jack"; Document B. Chinese Patent CN222498517U provides an "electric hydraulic horizontal jack". Both of the aforementioned Document A and Document B are equipped with a battery pack (Document A calls it a "detachable battery"). Document A forms a T-shaped structure with a tubular grip and a tubular handle (i.e., a pressing rod), and respectively arranges the battery connector (i.e., the battery holder) and the control switch of the rechargeable battery structure system on the handle and the grip. For details, refer to paragraphs 0033 - 0035 of the specification of this patent and Figures 1 to 2Since the cross-sectional shapes of the grip and the handle of this structure are both circular, and the two are integrated and cannot be disassembled as needed, on the one hand, it is not sufficient to reflect the modular effect. On the other hand, it affects the reliability of the fixation of the battery connector to the grip and / or the handle. On the other hand, the manufacturing difficulty increases, and when damaged, it can only be replaced as a whole, resulting in a large use cost, which is not conducive to saving resources. On the other hand, due to the aforementioned T-shaped structure, it is not conducive to single-handed pinching and pulling the entire jack. In addition, since the connection between the push button at the lower end of the handle in Document A and the tails of a pair of wall plates (referred to as "mobile frame" in Document A) is achieved only by a component with a certain damping effect (see Figures 3 to 4 ) to achieve articulation, it does not have a locking function. Therefore, when the handle is in the use state, that is, in the non-collected folded state, the handle together with the push button will have abnormal shaking, causing structural and material fatigue, aggravating component wear, and even causing abnormal lodging of the handle, etc. Document B has changed the connection structure between the handle (equivalent to the grip in Document A) and the handle tube (equivalent to the "handle" in Document A). However, when in the folded state, since the battery pack seat together with the battery pack faces upward, on the one hand, it is not conducive to the protection of the battery pack seat, especially the battery pack set with the battery pack seat as the carrier. For example, it is easily damaged by falling objects from above. On the other hand, it causes an increase in the packaging volume. In addition, although the connection (articulation) between the push button in this Document B and the tails of a pair of wall plates is different in form from that in Document A, it also has the corresponding deficiencies of the aforementioned Document A. Summary of the Invention

[0005] The object of the present invention is to provide an electric horizontal hydraulic jack that helps to form a split structure in which the grip and the push rod are easily assembled to reflect an ideal modular effect, is beneficial to avoid the situation that if one of the push rod or the grip is damaged, both need to be replaced, thereby reducing the use cost and saving resources, and is beneficial to reflecting the rationality of the installation position of the battery pack on the grip to avoid being damaged by accidental falling objects.

[0006] Another object of the present invention is to provide an electric horizontal hydraulic jack that is convenient to ensure the reliability of the articulation between the push button and the jack body, thereby avoiding the situation that the push button together with the push rod and the battery pack connected to the grip swing or even overturn.

[0007] The task of the present invention is accomplished as follows. An electric horizontal hydraulic jack includes a jack body; a push button, which is hinged to the front end of the jack body; a push button rod and a grip. The lower end of the push button rod is hinged to the push button, and the grip is connected to the upper end of the push button rod; a battery pack, which is arranged on the grip. It is characterized in that: the grip includes a left grip shell flap and a right grip shell flap. The left and right grip shell flaps cooperate face to face with each other and have the same shape and size. A left grip cavity is formed at the upper end of the left grip shell flap, a left battery pack insertion and support seat is formed at the front side of the middle part, and a left connecting arm of the push button rod is formed at the lower end of the left grip shell flap. A right grip cavity corresponding to the left grip cavity is formed at the upper end of the right grip shell flap, a right battery pack insertion and support seat corresponding to the left battery pack insertion and support seat is formed at the front side of the middle part, and a right connecting arm of the push button rod corresponding to the left connecting arm of the push button rod is formed at the lower end of the right grip shell flap. The left and right connecting arms of the push button rod jointly embrace and connect to the upper end of the push button rod. The battery pack is simultaneously inserted and unplugged in cooperation with the opposite sides of the left and right battery pack insertion and support seats, and the battery pack provides power support for the jack body so that the jack body jacks up or lowers the load.

[0008] Another task of the present invention is accomplished as follows. A vertical protection mechanism for the push button rod is provided between the push button and the front end of the jack body to prevent the push button rod from swinging or toppling in the direction towards the jack body or away from the jack body when in use.

[0009] In a specific embodiment of the present invention, a left grip shell flap control panel yield opening is formed on the rear side of the upper end of the left grip shell flap, a control panel left insertion groove is formed at the upper and lower positions corresponding to the left grip shell flap control panel yield opening, a right grip shell flap control panel yield opening corresponding to the left grip shell flap control panel yield opening is formed on the rear side of the upper end of the right grip shell flap, a control panel right insertion groove with the same structure and corresponding position to the control panel left insertion groove is formed at the upper and lower positions corresponding to the right grip shell flap control panel yield opening, a control panel is arranged between the left grip shell flap control panel yield opening and the right grip shell flap control panel yield opening, and the left upper edge and lower edge of the control panel are inserted into the control panel left insertion groove The upper and lower edges of the right side of the control panel are inserted and matched with the right insertion groove of the control panel, and the function buttons on the control panel face left and are in an exposed state; a circuit board electrically connected to the control panel through a line is fixed on the left grip shell flap and at a position corresponding to the right side of the left plug-in support seat of the battery pack, or on the right grip shell flap and at a position corresponding to the left side of the right plug-in support seat of the battery pack; an electrode seat is inserted between the opposite sides of the left and right plug-in support seats of the battery pack, and the electrode seat is electrically connected to the circuit board through a wire, and the battery pack is electrically connected to the electrode seat b by physical contact with its metal contacts; the jack body is electrically connected to the circuit board through a line; the left and right grip shell flaps are shaped as a pair of P-shapes that face each other.

[0010] In another specific embodiment of the present invention, a left battery pack plug-in slot is formed in a longitudinal state on the front right side of the left battery pack plug-in support seat, and a left battery pack clamping foot slot is formed in the front upper part, and a right battery pack plug-in slot is formed in a longitudinal state on the front left side of the right battery pack plug-in support seat, and a right battery pack clamping foot slot is formed in the front upper part, the left and right battery pack plug-in slots correspond to each other, and the left and right battery pack clamping foot slots are located on the same straight line, and a battery pack plug-in rib is provided on both sides of the battery pack and at positions corresponding to the left and right battery pack plug-in slots, and the battery pack plug-in rib of the battery pack is plug-in and pull-out matched with the left and right battery pack plug-in foot slots, and a battery pack clamping foot is provided on the battery pack and at positions corresponding to the left and right battery pack clamping foot slots, and the battery pack clamping foot button on the battery pack enables the battery pack clamping foot to be simultaneously engaged or disengaged with the left and right battery pack clamping foot slots.

[0011] In another specific embodiment of the present invention, the push rod is in a tubular structure, a left semicircular cavity with an opening facing right is formed at the lower end of the left grip shell flap, a left longitudinal tenon protruding from the cavity bottom wall is formed on the cavity bottom wall of the left semicircular cavity, a right semicircular cavity with an opening facing left is formed at the lower end of the right grip shell flap, a right longitudinal tenon protruding from the cavity bottom wall is formed on the cavity bottom wall of the right semicircular cavity, the right longitudinal tenon corresponds to the left longitudinal tenon, and a right longitudinal tenon protruding from the cavity bottom wall is formed at the upper end of the push rod. The left and right sides are each formed with a mortise and tenon, and the left longitudinal mortise is engaged with the mortise and tenon located on the left side of the upper end of the push rod, and the right longitudinal mortise is engaged with the mortise and tenon located on the right side of the upper end of the push rod, so that the lower ends of the left and right grip shell petals are engaged with the upper end of the push rod, and the upper, middle and lower ends of the left and right grip shell petals are respectively fixed by shell petal connecting screws, wherein the shell petal connecting screws for connecting the lower ends of the left and right grip shell petals pass through the screw clearance holes opened on the push rod.

[0012] In another specific embodiment of the present invention, the lower end of the lever is inserted into the lever insertion cavity of the lever seat and is locked by a locking screw arranged on the side wall of the lever seat, and a lever seat hinge ear is formed on the rear side of the lower end of the lever seat, and the lever seat hinge ear is hinged to the rear side of the lever hinged to the front end of the jack body, and a lever seat locking ear is formed on the front side of the lower end of the lever seat; A snap lever vertical and folding control mechanism for locking or unlocking the locking ear of the snap lever seat is provided on the snap lever and at a position corresponding to the locking ear of the snap lever seat, and when the locking ear of the snap lever seat is in a locked state, the snap lever is in a vertical state, and when the locking ear of the snap lever seat is in an unlocked state, the snap lever is folded on the upper part of the jack body and is parallel to the upper part of the jack body.

[0013] In still another specific embodiment of the present invention, a locking screw cavity is formed in the middle of the front side of the locking ear of the pressing handle rod seat. The hinge ear of the pressing handle rod seat is hinged to the rear side of the pressing handle through a hinge pin shaft of the hinge ear of the pressing handle rod seat. The vertical and folding control mechanism of the pressing handle rod includes a central support column, a locking screw mating nut, a locking screw, and a locking screw operating handle. The central support column is formed in the middle of the pressing handle. A pair of parallel nut shaft head support ears extend from the front side of the central support seat. The locking screw mating nut is located between the pair of nut shaft head support ears. A locking screw mating nut support shaft head is fixed on each of the left and right sides of the locking screw mating nut. The locking screw mating nut support shaft head is supported on the nut shaft head support ears and is blocked by a blocking member. The locking screw is in threaded cooperation with the locking screw mating nut at a position corresponding to the locking screw cavity. A locking screw pressing ring for tightly contacting or disengaging from the upper surface of the locking ear of the pressing handle rod seat is formed on the locking screw at a position corresponding to the upper part of the locking ear of the pressing handle rod seat. A locking screw ball head is formed at the top of the locking screw. A locking screw ball head mating cavity is formed at the upper end of the locking screw operating handle. The locking screw ball head mating cavity is matched with the locking screw ball head, and the upper end of the locking screw operating handle is hinged to the locking screw ball head by a locking screw operating handle pin shaft. The lower end of the locking screw operating handle is formed as a free end and abuts against the front side of the pressing handle. A pair of pin hinge seats are formed at the upper rear part of the pressing handle at a position corresponding to the hinge pin shaft of the hinge ear of the pressing handle rod seat. The hinge ear of the pressing handle rod seat is located between the pair of pin hinge seats. The hinge pin shaft of the hinge ear of the pressing handle rod seat, together with the hinge ear of the pressing handle rod seat, is hinged to the pair of pin hinge seats. The blocking member is a snap ring or a split pin.

[0014] In yet another specific embodiment of the present invention, the vertical protection mechanism of the pressing handle rod includes a pressing handle anti-abnormal overturning lever and a torsion spring. The pressing handle anti-abnormal overturning lever is fixed to the front end of the jack body at a position corresponding to the rear side of the pressing handle. The torsion spring is arranged in a torsion spring cavity between a pair of left hinge seats formed on the pressing handle, and the middle of the torsion spring is matched with the jack body. One of the pair of torsion spring legs of the torsion spring is hooked to the front end of the jack body, and the other torsion spring leg abuts against the pressing handle.

[0015] In a further specific embodiment of the present invention, the jack body includes a left wall panel, a right wall panel, a pair of lifting arms, a left pull rod, a right pull rod, a saddle, a front cover, a rear cover, and a lifting arm electric lifting drive mechanism. The left and right wall panels correspond to each other left and right. A left wall panel universal wheel bracket is fixed to the left side of the front end of the left wall panel. A left wall panel universal wheel is rotatably provided on the left wall panel universal wheel bracket. A right wall panel universal wheel bracket is fixed to the right side of the front end of the right wall panel. A right wall panel universal wheel is rotatably provided on the right wall panel universal wheel bracket. A directional wheel shaft is provided between the rear ends of the left and right wall panels. The left shaft head of the directional wheel shaft extends to the left side of the left wall panel at a position corresponding to the directional wheel shaft left shaft head hole opened at the rear end of the left wall panel and a left directional wheel is rotatably provided. The right shaft head of the directional wheel shaft extends to the right side of the right wall panel at a position corresponding to the directional wheel shaft right shaft head hole opened at the rear end of the right wall panel and corresponding to the directional wheel shaft left shaft head hole and a right directional wheel is rotatably provided. A front cover support shaft is fixed by a front cover support shaft fixing screw between the opposite sides of the front ends of the left and right wall panels. A left handle hinge shaft is fixed to the left wall panel at a position corresponding to the left end of the handle. The pair of handle hinge seats are hinged to the left handle hinge shaft, and the middle part of the torsion spring is sleeved on the left handle hinge shaft. One of the two torsion spring legs of the pair of torsion spring legs is hooked on the front cover support shaft. A right handle hinge shaft is fixed to the right wall panel at a position corresponding to the right end of the handle. The right handle hinge seat formed at the right end of the handle is hinged to the right handle hinge shaft. A left stop rod fixing screw is provided on the left wall panel at a position corresponding to the left end of the handle anti-abnormal flipping stop rod. A right stop rod fixing screw is provided on the right wall panel at a position corresponding to the right end of the handle anti-abnormal flipping stop rod. The left end of the handle anti-abnormal flipping stop rod is fixed to the left stop rod fixing screw, and the right end is fixed to the right stop rod fixing screw. The pair of lifting arms are parallel to each other left and right. The upper part of the front ends of the pair of lifting arms is rotatably supported at the middle part of the lifting arm shaft through a lifting arm shaft sleeve. The left end of the lifting arm shaft extends to the left side of the left wall panel through the left shaft head of the lifting arm shaft and is fixed by a left shaft head nut of the lifting arm shaft. The right end of the lifting arm shaft extends to the right side of the right wall panel through the right shaft head of the lifting arm shaft and is fixed by a right shaft head nut of the lifting arm shaft. The rear ends of the pair of lifting arms are hinged to the saddle through a saddle hinge shaft on the saddle. The upper part between the pair of lifting arms is shielded by a lifting arm shield plate. A pair of connecting plates are provided between the opposite sides of the pair of lifting arms. The front ends of the pair of connecting plates are hinged to the lower parts of the front ends of the pair of lifting arms through a connecting plate hinge shaft. The rear ends of the pair of connecting plates are hinged to the lifting arm electric lifting drive mechanism. The front end of the left pull rod is connected to the right side of the left wall panel by a left pull rod connecting screw and locked by a locking nut of the left pull rod connecting screw located on the left side of the left wall panel. The rear end of the left pull rod is hinged to a left pull rod hinge shaft head on the left side of the saddle seat for setting the saddle through a left pull rod hinge shaft head hole.The front end of the right pull rod is connected to the left side of the right wall panel through a right pull rod connecting screw and locked by a locking nut of the right pull rod connecting screw located on the right side of the right wall panel. The rear end of the right pull rod is hinged to the right pull rod hinge shaft head on the right side of the saddle seat for setting the saddle through a right pull rod hinge shaft head hole. The saddle is fixed on the saddle seat by screws. The front cover is placed on the front cover support shaft through front cover support shaft holes formed on each of the left and right sides of its upper part corresponding to the front cover support shaft. The middle part of the front cover corresponds to the front side of the electric lifting drive mechanism of the boom and shields the front side of the electric lifting drive mechanism of the boom. Fixing ears are respectively formed on the lower left and right sides of the front cover, and each of the fixing ears of the front cover is fixed to the lower front ends of the left and right wall panels by screws respectively. The rear cover corresponds to the rear side of the directional wheel shaft and is fixed to the opposite sides of the rear ends of the left and right wall panels by rear cover fixing ears formed on the left and right ends of the rear cover respectively. The electric lifting drive mechanism of the boom includes a motor, a jack base, an oil pump, a solenoid valve, a fuel tank, an oil cylinder and a cover plate. The motor is arranged in a horizontal cantilever state and is electrically connected to the circuit board by a wire, and the motor is fixedly connected to the front side of the oil pump through a motor base and forms a transmission cooperation relationship with the oil pump. The oil pump is connected to the front side of the jack base and communicates with the oil passage in the jack base. The left and right sides of the jack base are fixed between the front ends of the left and right wall panels by screws and correspond to the rear side of the push button. The solenoid valve is connected to the solenoid valve mounting hole on the jack base and communicates with the oil return passage in the jack base. The fuel tank is fixed above the jack base by fuel tank fixing screws. The oil cylinder is horizontally arranged and connected to the rear side of the jack base and communicates with the oil passage in the jack base. The cover plate is fixed between the left and right wall panels at a position corresponding to the upper part of the fuel tank. Among them, when the oil pump has an oil pump suction pipe interface, the oil pump suction pipe interface is connected to and communicates with the fuel tank, and the jack base is connected to and communicates with the fuel tank through its jack base oil return pipe; when the oil pump does not have an oil pump suction pipe interface, the jack base communicates with the fuel tank through the jack base oil return pipe and the jack base oil suction interface; the right ends of the pair of connecting pieces are connected to the ends of the oil cylinder column of the oil cylinder through a cylinder column connecting shaft head.,

[0016] In yet another specific embodiment of the present invention, the oil pump is a gear pump or a plunger pump. When the oil pump is a gear pump, the gear pump has the oil pump suction pipe interface connected to and communicating with the fuel tank, and the jack base oil return pipe of the jack base is connected to and communicates with the fuel tank; when the oil pump is a plunger pump, the plunger pump does not have the oil pump suction pipe interface, and the jack base is connected to and communicates with the fuel tank through the jack base oil return pipe and the jack base oil suction interface together.

[0017] The technical effect of the technical solution provided by the present invention lies in that: since the grip is designed as a left grip shell flap and a right grip shell flap that can be separated from each other and are easy to assemble with the pressing rod, an ideal modular effect can be achieved, and it is beneficial to avoid the situation where the pressing rod or the grip is damaged due to the damage of either of them, reducing the use cost and saving resources; since the left and right plug-in support seats of the battery pack are respectively formed on the front sides of the middle parts of the left and right grip shell flaps, it can avoid being damaged by accidental falling objects from above during the use state. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Structural diagram of an embodiment of the present invention; Figure 2 is Figure 1 Enlarged view of part A of Figure 3 is Figure 1 Enlarged view of part B of Figure 4 is Figure 1 Detailed structural diagram of the grip shown in Figure 5 Schematic diagram of the first embodiment of the structural system of the electric lifting drive mechanism of the boom of the jack body 1; Figure 6 Schematic diagram of the second embodiment of the structural system of the electric lifting drive mechanism of the boom of the jack body 1; Figure 7 This invention is Figure 1 Schematic diagram of the state where the pressing hand, the pressing rod, the grip and the battery pack are folded and corresponding to the upper part of the jack body. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to more clearly understand the technical essence and beneficial effects of the present invention, the applicant will make a detailed description in the following in the form of embodiments. However, the descriptions of the embodiments are not limitations on the technical solutions of the present invention. Any equivalent transformation that is only formal rather than substantial based on the concept of the present invention should be regarded as within the scope of the technical solutions of the present invention.

[0020] In the following descriptions, all the directional or positional concepts related to up, down, left, right, front and back are based on the current position state of Figure 1 and thus cannot be understood as special limitations on the technical solutions provided by the present invention. Embodiment 1

[0021] Please refer to Figure 1, shows the jack body 1; shows a push button 2, which is hinged to the front end of the aforementioned jack body 1; shows a push button rod 3 and a grip 4, the lower end of the push button rod 3 is hinged to the aforementioned push button 2, and the grip 4 is connected to the upper end of the push button rod 3; shows a battery pack 5, which is arranged on the aforementioned grip 4.

[0022] As the technical key points of the technical solution provided by the present invention: the aforementioned grip 4 includes a left grip shell flap 41 and a right grip shell flap 42, the left and right grip shell flaps 41, 42 are arranged face to face in a left-right corresponding state and have the same shape and size. A left grip cavity 411 is formed at the upper end of the left grip shell flap 41, a battery pack left insertion and support seat 412 is formed at the front side of the middle part, and a push button rod left connecting arm 413 is formed at the lower end of the left grip shell flap 41. A right grip cavity 421 corresponding to the aforementioned left grip cavity 411 is formed at the upper end of the right grip shell flap 42, a battery pack right insertion and support seat 422 corresponding to the aforementioned battery pack left insertion and support seat 412 is formed at the front side of the middle part, and a push button rod right connecting arm 423 corresponding to the push button rod left connecting arm 413 is formed at the lower end of the right grip shell flap 42. The left and right connecting arms 413, 423 of the push button rod are jointly clamped and connected to the upper end of the aforementioned push button rod 3. The aforementioned battery pack 5 is simultaneously inserted and removed in cooperation with the opposite sides of the aforementioned battery pack left and right insertion and support seats 412, 422, and the battery pack 5 provides power support for the aforementioned jack body 1 to lift or lower the load (i.e., heavy object) of the jack body 1.

[0023] A push button rod vertical protection mechanism 6 is arranged between the aforementioned push button 2 and the front end of the aforementioned jack body 1 to prevent the aforementioned push button rod 3 from swinging or tipping in the direction towards the aforementioned jack body 1 or away from the jack body 1 (i.e., towards the rear or towards the front) when in use. Due to the addition of the push button rod vertical protection mechanism 6, the hinge reliability between the push button 2 and the jack body 1 can be ensured, and the push button 2 together with the push button rod 3 and the battery pack 5 attached to the grip 4 can be prevented from swaying or tipping, fully reflecting good safety protection.

[0024] A left grip shell flap control panel yield opening 414 is formed on the rear side of the upper end of the aforementioned left grip shell flap 41, and a control panel left insertion groove 4141 is formed at the upper and lower positions corresponding to the left grip shell flap control panel yield opening 414, and a right grip shell flap control panel yield opening (not shown in the figure) corresponding to the aforementioned left grip shell flap control panel yield opening 414 is formed on the rear side of the upper end of the aforementioned right grip shell flap 42, and a control panel right insertion groove (not shown in the figure) with the same structure and corresponding position as the aforementioned control panel left insertion groove 4141 is formed at the upper and lower positions corresponding to the right grip shell flap control panel yield opening, and a control panel 7 is arranged between the left grip shell flap control panel yield opening 414 and the right grip shell flap control panel yield opening, and the left upper edge and lower edge of the control panel 7 are aligned with the left upper edge and lower edge of the control panel 7. The left plug-in slot 4141 of the aforementioned control panel is plug-in matched, and the upper edge and the lower edge of the right side of the control panel 7 are plug-in matched with the right plug-in slot of the aforementioned control panel, and the function button 71 on the control panel 7 faces left and is in an exposed state; a circuit board 8a electrically connected to the aforementioned control panel through a line is fixed on the aforementioned left grip shell 41 and at a position corresponding to the right side of the aforementioned left plug-in support seat 412 of the battery pack, and the aforementioned circuit board 8a is fixed on the right grip shell 42 and corresponds to the left side of the right plug-in support seat 422 of the battery pack; an electrode seat 8b is inserted between the opposite sides of the left and right plug-in support seats 412, 422 of the aforementioned battery pack, and the electrode seat 8b is electrically connected to the circuit board 8a through a wire, and the aforementioned battery pack 5 is electrically connected to the electrode seat 8b by physical contact with its metal contacts; the aforementioned jack body 1 is connected through a line by Figure 7 The electrical connection line 20 shown passing through or passing through the central hole 34 of the flip lever 3 is electrically connected to the aforementioned circuit board 8a.

[0025] See also Figure 2 and Figure 4 And continue to combine Figure 1, in front of the right side of the left plug-in support seat 412 of the battery pack, there is a longitudinally formed left battery pack plug-in slot 4121, and in the upper front part, there is a left card slot 4122 for the battery pack card foot. In front of the left side of the right plug-in support seat 422 of the battery pack, there is a longitudinally formed right battery pack plug-in slot 4221, and in the upper front part, there is a right card slot 4222 for the battery pack card foot. The left and right battery pack plug-in slots 4121 and 4221 correspond to each other left and right, and the left and right card slots 4122 and 4222 for the battery pack card feet are on the same straight line, that is, on the same horizontal plane. On both sides of the aforementioned battery pack 5 and at positions corresponding to the left and right battery pack plug-in slots 4121 and 4221 respectively, there is a battery pack insertion rib 51 each. The battery pack insertion rib 51 is in plug-in fit with the left and right battery pack plug-in slots 4121 and 4221, and the battery pack insertion rib 51 of the battery pack 5 is in plug-in fit with the left and right card slots 4122 and 4222 for the battery pack card feet. On the battery pack 5 and at positions corresponding to the left and right card slots 4122 and 4222 for the battery pack card feet, there is a battery pack card foot 52 provided. The battery pack card foot 52 is simultaneously engaged or disengaged with the left and right card slots 4122 and 4222 for the battery pack card feet by the battery pack card foot button 53 on the battery pack 5.

[0026] As Figure 4 shown, the aforementioned push rod 3 has a circular tubular structure, and the upper and lower end ports are not closed. At the lower end of the left grip shell flap 41, there is a left semi-circular cavity 415 with an opening facing right. On the bottom wall of the left semi-circular cavity 415, there is a left longitudinal tenon 4151 protruding from the bottom wall and acting as a key. At the lower end of the right grip shell flap 42, there is a right semi-circular cavity 424 with an opening facing left. On the bottom wall of the right semi-circular cavity 424, there is a right longitudinal tenon (not shown in the figure) protruding from the bottom wall and acting as a key. The right longitudinal tenon corresponds to the aforementioned left longitudinal tenon 4151. On the left and right sides of the upper end of the push rod 3, there is a tenon groove 31 each. The lower ends of the left grip shell flap 41 and the right grip shell flap 42 are clamped with the upper end of the push rod 3 by the fitting of the aforementioned left longitudinal tenon 4151 with the tenon groove 31 on the left side of the upper end of the push rod 3 and the fitting of the aforementioned right longitudinal tenon with the tenon groove on the right side of the upper end of the push rod 3. The upper, middle, and lower ends of the left and right grip shell flaps 41 and 42 are fixed by shell flap connecting screws 43 respectively. Among them, the aforementioned shell flap connecting screws 43 for connecting the lower ends of the left and right grip shell flaps 41 and 42 pass through the screw relief holes 32 opened on the push rod 3.

[0027] As Figure 1 and Figure 4 shown, the shapes of the aforementioned left and right grip shell flaps 41 and 42 are in the shape of a pair of P-shaped that cooperate face to face with each other.

[0028] Please focus on Figure 3 and combine withFigure 1 , the lower end of the aforesaid pressing rod 3 is inserted into the pressing rod insertion cavity 331 of the pressing rod seat 33 and locked by a locking screw 332 provided on the side wall of the pressing rod seat 33. A pressing rod seat hinge ear 333 is formed at the rear side of the lower end of the pressing rod seat 33. The pressing rod seat hinge ear 333 is hinged to the rear side of the aforesaid pressing hand 2 hinged to the front end of the aforesaid jack body 1. A pressing rod seat locking ear 334 is formed at the front side of the lower end of the pressing rod seat 33; on the aforesaid pressing hand 2 and at a position corresponding to the pressing rod seat locking ear 334, there is provided a pressing rod vertical and folding control mechanism 21 for locking or unlocking the pressing rod seat locking ear 334. And when the pressing rod seat locking ear 334 is in the state of being locked by the aforesaid pressing rod vertical and folding control mechanism 21, the aforesaid pressing rod 3 is in a vertical state, while when the pressing rod seat locking ear 334 is in the unlocked state, the aforesaid pressing rod 3 is folded above the upper part of the aforesaid jack body 1 as shown in Figure 7 and is in a state parallel to the upper part of the jack body 1.

[0029] In the middle of the front side of the aforesaid pressing handle base locking ear 334, a locking screw cavity 3341 is formed. The aforesaid pressing handle base hinge ear 333 is hinged to the rear side of the aforesaid pressing handle 2 through a pressing handle base hinge ear pin shaft 3331; the aforesaid pressing handle vertical and folding control mechanism 21 includes a central support column 211, a locking screw mating nut 212, a locking screw 213 and a locking screw operating handle 214. The central support column 211 is formed in the middle of the aforesaid pressing handle 2. On the front side of the central support base 211, a pair of nut shaft head support ears 2111 extending parallel to each other are provided. The locking screw mating nut 212 is located between the pair of nut shaft head support ears 2111. On the left side and the right side of the locking screw mating nut 212, a locking screw mating nut support shaft head 2121 is fixed respectively. The locking screw mating nut support shaft head 2121 is supported on the aforesaid nut shaft head support ear 2111 and is blocked by a blocking member 21211. The locking screw 213 is in threaded cooperation with the aforesaid locking screw mating nut 212 at a position corresponding to the aforesaid locking screw cavity 3341. On the locking screw 213 and at a position corresponding to above the aforesaid pressing handle base locking ear 334, a locking screw pressing ring 2131 for closely contacting or disengaging from the upper surface of the pressing handle base locking ear 334 is formed. At the top of the locking screw 213, a locking screw ball head 2132 is formed. At the upper end of the locking screw operating handle 214, a locking screw ball head mating cavity 2141 is formed. The locking screw ball head mating cavity 2141 is matched with the locking screw ball head 2132. The upper end of the locking screw operating handle 214 is hinged to the aforesaid locking screw ball head 2132 by a locking screw operating handle pin shaft 2142. The lower end of the locking screw operating handle 214 is configured as a free end and abuts against the front side of the pressing handle 2; at the upper part of the rear side of the aforesaid pressing handle 2 and at a position corresponding to the aforesaid pressing handle base hinge ear pin shaft 3331, a pair of pin shaft hinge seats 22 are formed. The aforesaid pressing handle base hinge ear 333 is located between the pair of pin shaft hinge seats 22. The aforesaid pressing handle base hinge ear pin shaft 3331 together with the aforesaid pressing handle base hinge ear 333 is hinged to the aforesaid pair of pin shaft hinge seats 22; in this embodiment, the aforesaid blocking member 21211 is a circlip, but it can also be a split pin or other equivalent components.

[0030] Continue to see Figure 3 And continue to combine Figure 1 Furthermore, the aforesaid pressing handle vertical protection mechanism 6 includes a pressing handle anti-abnormal flipping stop lever 61 and a torsion spring 62. The pressing handle anti-abnormal flipping stop lever 61 is fixed to the front end of the aforesaid jack body 1 at a position corresponding to the rear side of the aforesaid pressing handle 2. The torsion spring 62 is arranged in a torsion spring cavity 231 formed between a pair of pressing handle left hinge seats 23 formed on the pressing handle 2, and the middle of the torsion spring 62 is matched with the aforesaid jack body 1. One of the pair of torsion spring legs 621 of the torsion spring 62 is hooked to the front end of the jack body 1, and the other torsion spring leg abuts against the pressing handle 2.

[0031] When the pressing rod 3 is in the vertical state shown by Figure 1 , that is, in the aforementioned use state, the operator operates the locking screw operating handle 214. The locking screw ball head 2132 is driven by the locking screw operating handle pin shaft 2142 to drive the locking screw 213 to rotate downward until the locking screw retaining ring 2131 reliably presses on the upper surface of the locking ear 334 of the pressing rod seat, thereby reliably limiting the aforementioned pressing rod seat 33 on the pressing hand 2. Conversely, the locking is released (shown by Figure 7 ).

[0032] When the present invention is in the use state locked by the aforementioned pressing rod vertical and folding control mechanism 21, that is, when the pressing rod 3 is in the vertical state, if the pressing hand 2 attempts to tilt backward, that is, in the direction of the pressing hand anti-abnormal flipping stop rod 61, then it can be blocked by the pressing hand anti-abnormal flipping stop rod 61 and will not tilt backward or even overturn, so that the pressing rod 3 together with the grip 4 can be kept in the vertical state by the pressing hand 2. Conversely, if the pressing hand 2 attempts to tilt forward, that is, in the direction away from the pressing hand anti-abnormal flipping stop rod 61, then it can be prevented from tilting forward by the action of the aforementioned torsion spring 62. In addition, since the battery pack 5 is located on the side of the grip 4 rather than on the top, accidental falling objects from above can be prevented from damaging the battery pack 5.

[0033] Please focus on Figure 1, the aforementioned jack body 1 includes a left wallboard 11, a right wallboard 12, a pair of lifting arms 13, a left pull rod 14a, a right pull rod 14b, a saddle 15 (also called "tray"), a front cover 16, a rear cover 17, and a lifting arm electric lifting drive mechanism 18. The left and right wallboards 11 and 12 correspond to each other left and right. A left wallboard universal wheel frame 111 is fixed to the left front end of the left wallboard 11, and a left wallboard universal wheel 1111 is rotatably provided on the left wallboard universal wheel frame 111. A right wallboard universal wheel frame 121 is fixed to the right front end of the right wallboard 12, and a right wallboard universal wheel 1211 is rotatably provided on the right wallboard universal wheel frame 121. A directional wheel shaft 19 is provided between the rear ends of the left wallboard 11 and the right wallboard 12. The left shaft head 191 of the directional wheel shaft 19 extends to the left side of the left wallboard 11 at a position corresponding to the directional wheel shaft left shaft head hole 112 opened at the rear end of the left wallboard 11, and a left directional wheel 1911 is rotatably provided. The right shaft head 192 of the directional wheel shaft 19 extends to the right side of the right wallboard 12 at a position corresponding to the directional wheel shaft right shaft head hole (not shown in the figure) opened at the rear end of the right wallboard 12 and corresponding to the directional wheel shaft left shaft head hole 112, and a right directional wheel 1921 is rotatably provided. A front cover support shaft 10 is fixed between the front ends of the left and right wallboards 11 and 12 on the opposite side by a front cover support shaft fixing screw 101. A left push-button hinge shaft 113 is fixed on the left wallboard 11 at a position corresponding to the left end of the aforementioned push button 2. The pair of push-button hinge seats 23 are hinged to the left push-button hinge shaft 113, and the middle part of the aforementioned torsion spring 62 is sleeved on the left push-button hinge shaft 113, that is, the left push-button hinge shaft 113 passes through the central hole of the torsion spring 62, thus verifying that the middle part of the torsion spring 62 cooperates with the jack body 1 as described by the applicant above. One of the pair of torsion spring feet 621, such as Figure 1One torsion spring foot at the front shown is hooked on the aforementioned front cover support shaft 10. On the right wall panel 12 and at a position corresponding to the right end of the push button 2, a push button right hinge shaft 122 is fixed. The push button right hinge seat 24 formed at the right end of the push button 2 is hinged to the push button right hinge shaft 122, that is, the push button right hinge shaft 122 penetrates into the push button right hinge seat hole 241 on the push button right hinge seat 24. On the left wall panel 11 and at a position corresponding to the left end of the aforementioned push button anti-abnormal flipping stop lever 61, a stop lever left fixing screw 114 is provided. On the right wall panel 12 and at a position corresponding to the right end of the push button anti-abnormal flipping stop lever 61, a stop lever right fixing screw 123 is provided. The left end of the aforementioned push button anti-abnormal flipping stop lever 61 is fixed to the stop lever left fixing screw 114, and the right end is fixed to the stop lever right fixing screw 123. A pair of lifting arms 13 are parallel to each other left and right, and the upper part of the front ends of the pair of lifting arms 13 is rotatably supported at the middle of the lifting arm shaft 131 through the lifting arm bushing 133. The left end of the lifting arm shaft 131 extends to the left side of the left wall panel 11 through the lifting arm shaft left shaft head 1311 and is fixed by the lifting arm shaft left shaft head nut 13111. The right end of the lifting arm shaft 131 extends to the right side of the right wall panel 12 through the lifting arm shaft right shaft head 1312 and is fixed by the lifting arm shaft right shaft head nut 13121. The rear ends of the pair of lifting arms 13 are hinged to the saddle 151 through the saddle hinge shaft 1512 provided on the saddle 151. The upper part between the pair of lifting arms 13 is shielded by the lifting arm shield 132. In Figure 1Also shown therein is a boom articulated bushing grease nipple 1331 for injecting lubricating oil provided on a boom bushing 133 (i.e., a boom pivot bushing). A grease nipple relief hole 1321 is provided on the boom shield 132 and at a position corresponding to the boom articulated bushing grease nipple 1331. The lubricating oil is injected between the boom bushing 133 and the boom shaft 131 through the boom articulated bushing grease nipple 1331. A pair of connecting plates 134 are provided between the facing sides of a pair of booms 13. The front ends of the pair of connecting plates 134 are hinged to the lower parts of the front ends of the pair of booms 13 through a connecting plate hinge shaft 1341. The rear ends of the pair of connecting plates 134 are hinged to the aforementioned boom electric lifting drive mechanism 18 (to be described later). The front end of the left pull rod 14a is connected to the right side of the left wall plate 11 through a left pull rod connecting screw 14c and locked by a left pull rod connecting screw lock nut 14d located on the left side of the left wall plate 11. The rear end of the left pull rod 14a is hinged to a left pull rod articulated head on the left side of a saddle seat 151 for setting a saddle 15 through a left pull rod articulated head hole 14h. The front end of the right pull rod 14b is connected to the left side of the right wall plate 12 through a right pull rod connecting screw 14e and locked by a right pull rod connecting screw lock nut 14f located on the right side of the right wall plate 12. The rear end of the right pull rod 14b is hinged to a right pull rod articulated head 1511 on the right side of the saddle seat 151 for setting the saddle through a right pull rod articulated head hole 14g. The saddle 15 is fixed to the aforementioned saddle seat 151 by screws. The front cover 16 is mounted on the front cover support shaft 10 through front cover support shaft holes 1611 formed on each of a front cover support ear 161 formed on the upper left and right sides thereof at positions corresponding to the aforementioned front cover support shaft 10. The middle part of the front cover 16 corresponds to the front side of the aforementioned boom electric lifting drive mechanism 18 and shields the front side of the boom electric lifting drive mechanism 18. Front cover fixing ears 162 are formed on the lower left and right sides of the front cover 16 respectively. The front cover fixing ears 162 are fixed to the lower parts of the front ends of the aforementioned left and right wall plates 11 and 12 by screws respectively. The rear cover 17 corresponds to the rear side of the aforementioned idler wheel shaft 19 and is fixed to the facing sides of the rear ends of the left wall plate 11 and the right wall plate 12 respectively by rear cover fixing ears 171 formed on the left end and the right end of the rear cover 17.

[0034] Please pay special attention to Figure 1 and in combination with Figure 5, the aforementioned electric lifting drive mechanism 18 of the boom includes a motor 181, a jack base 182, an oil pump 183, a solenoid valve 184, an oil tank 185, an oil cylinder 186, and a protective cover plate 187. The motor 181 is arranged in a horizontal cantilever state or in a lying state and is electrically connected to the aforementioned circuit board 8a by a circuit, that is, by the aforementioned electrical connection circuit 20. The motor 181 is fixedly connected to the front side of the oil pump 183 through a motor base 1811 and forms a transmission cooperation relationship with the oil pump 183. The oil pump 183 is connected to the front side of the jack base 182 and is communicated with the oil passage in the jack base of the jack base 182. The left and right sides of the jack base 182 are respectively fixed between the front ends of the aforementioned left and right wall plates 11 and 12 by a left jack base fixing screw 1823 and a right jack base fixing screw 1824, and correspond to the rear side of the aforementioned push button 2. The solenoid valve 184 is connected to the solenoid valve mounting hole 1826 on the jack base 182 and is communicated with the oil return passage in the jack base 182. The oil tank 185 is fixed above the jack base 182 by an oil tank fixing screw 1851. The oil cylinder 186 is connected to the rear side of the jack base 182 in a horizontal lying state and is communicated with the oil passage in the jack base 182. The protective cover plate 187 is fixedly embedded between the aforementioned left and right wall plates 11 and 12 at a position corresponding to the upper part of the oil tank 185. Among them, when the aforementioned oil pump 183 has an oil pump suction pipe interface 1831, the oil pump suction pipe interface 1831 is connected to and communicated with the aforementioned oil tank 185. The aforementioned jack base 182 is connected to and communicated with the oil tank 185 through its jack base oil return pipe 1821; when the oil pump 183 does not have an oil pump suction pipe interface 1831, the aforementioned jack base 182 is communicated with the aforementioned oil tank 185 through the jack base oil return pipe 1821 and the jack base oil suction interface 1822; the right ends of the aforementioned pair of connecting pieces 134 are connected to the end of the oil cylinder column 1861 of the oil cylinder 186 through a cylinder column connecting shaft head 1342.

[0035] The aforementioned saddle 15 is what is commonly referred to as a tray or basin, and the aforementioned saddle base 151 is what is commonly referred to as a tray seat or basin seat.

[0036] By Figure 1As shown, a pair of left foot-embedded slots 115 for the protective cover plate are formed along the upper edge of the foregoing left wall panel 11 and at a position corresponding to the left side of the protective cover plate 187. A pair of right foot-embedded slots 124 for the protective cover plate are formed along the upper edge of the foregoing right wall panel 12 and at a position corresponding to the right side of the protective cover plate 187. A pair of left feet 1871 of the protective cover plate are formed on the left side surface of the protective cover plate 187 and at a position corresponding to the pair of left foot-embedded slots 115 for the protective cover plate. A pair of right feet 1872 of the protective cover plate are formed on the right side surface of the protective cover plate 187 and at a position corresponding to the pair of right foot-embedded slots 124 for the protective cover plate. The pair of left feet 1871 of the protective cover plate are fitted with the pair of left foot-embedded slots 115 for the protective cover plate, and the pair of right feet 1872 of the protective cover plate are fitted with the pair of right foot-embedded slots 124 for the protective cover plate. The middle region of the protective cover plate 187 corresponds to the upper part of the fuel tank 185.

[0037] Please continue to see Figure 5 and in combination with Figure 1 , since the oil pump 183 selected in this embodiment is a gear pump, the oil pump 183 has an oil pump suction pipe interface 1831, and the oil pump suction pipe interface 1831 is connected to and communicated with the fuel tank 185; the foregoing jack base 182 is connected to and communicated with the fuel tank 185 through its jack base return oil pipe 1821.

[0038] In this embodiment, as Figure 5 shown, the jack base fixing screw holes 1829 for fixing the foregoing left and right jack base fixing screws 1823 and 1824 to the left and right wall panels 11 and 12 are also shown on the left and right sides of the jack base 182 respectively.

[0039] In this embodiment, the working principle of the electric lifting drive mechanism 18 of the lifting arm is as follows. The operator presses the corresponding function button 71 on the aforementioned control panel 7 to put the motor 181 into the working state. The motor 181 drives the oil pump 183 which is a gear pump. Under the operation of the oil pump 183, oil is sucked from the fuel tank 185 through the aforementioned oil pump suction pipe interface 1831. The oil fluid is introduced into the oil passage in the jack base 182 through the oil inlet hole 1825 on the jack base 182, and is introduced into the oil cylinder pressure oil chamber 1862 of the oil cylinder 186 by this oil passage. The oil piston 1863 is pushed by the pressure of the oil fluid in the oil cylinder pressure oil chamber 1862, so that the aforementioned oil cylinder column 1861 extends backward out of the cylinder body. The oil cylinder column 1861 pushes the cylinder column connecting shaft head 1342 (also called "cylinder column connecting shaft"). Acting on a pair of lifting arms 13 through the cylinder column connecting shaft head 1342, the rear end of the lifting arm 13 rotates counterclockwise around the lifting arm shaft 131, so that the rear end which is the free end of the lifting arm 13 drives the saddle seat 151 together with the saddle 15 to rise until the saddle 15 contacts and jacks up the load such as the vehicle chassis, completing the lifting action. Conversely, if it is necessary to lower and reset a pair of lifting arms 13, then the solenoid valve 184 is operated by operating the function key 71. The pressure oil that previously entered the oil cylinder pressure oil chamber 1862 returns to the fuel tank 185 from the jack base return oil pipe 1821 through the oil return passage in the jack base 182 until the saddle 15 descends and resets. During the process of the oil returning through the aforementioned jack base return oil pipe 1821, part of the oil fluid (also called "redundant oil fluid") in the fuel tank 185 enters the rear chamber of the oil cylinder, that is, enters the low-pressure oil chamber of the oil cylinder, through the compensation oil pipe 1864 of the oil cylinder 186.

[0040] Please refer to Figure 7 , when folding is required, Figure 7 shows the push button 2, the push button rod 3 and the grip 4 of the present invention together with the battery pack 5 in a state of being folded above the corresponding jack body 1. Before folding, according to the operation of the applicant on the vertical and folding control mechanism 21 of the push button rod above, that is, the locking of the push button rod seat 33 is released, and the operator holds the grip 4 and pulls it backward, and it can be in the Figure 7 shown folded state under the condition of overcoming the reaction force of the torsion spring 62. In the folded state, the aforementioned battery pack 5 is in a lateral state relative to the grip 4, rather than being located above the grip 4 as in the prior art. Therefore, the height in the folded state can be reduced, saving packaging space. Embodiment 2

[0041] Please refer to Figure 6, in this embodiment, the aforementioned oil pump 183 is a piston pump. Therefore, the oil pump 183, i.e., the piston pump, does not have an oil pump suction pipe interface 1831. Thus, the jack base 182 is connected and communicated with the aforementioned oil tank 185 through a jack base return oil pipe 1821 and a jack base oil suction interface 1822. The motor 181 is fixed to the front side of the jack base 182 by screws through a motor base 1811 at a position corresponding to a motor base fixing screw hole 1828 on the jack base 182 and forms a transmission cooperation relationship with the oil pump 183 which is a piston pump. The oil pump 183 is fitted in a piston pump mounting hole 1827 on the jack base 182 and is communicated with an oil passage in the jack base 182. Since the working principle of the piston pump in this embodiment belongs to well-known technology, the applicant will not elaborate further. The rest is the same as the description of Embodiment 1.

[0042] Although the applicant only exemplified a gear pump and a piston pump within the scope of the oil pump 183 above, it does not exclude other forms of pumps such as vane pumps and so on.

[0043] In summary, the technical solution provided by the present invention makes up for the deficiencies in the prior art, successfully completes the invention task, and faithfully realizes the technical effects described by the applicant in the technical effect column above.

Claims

1. An electric horizontal hydraulic jack, comprising a jack body (1); a lever (2), the lever (2) being hinged to the front end of the jack body (1); a lever (3) and a handle (4), the lower end of the lever (3) being hinged to the lever (2), the handle (4) being connected to the upper end of the lever (3); and a battery pack (5), the battery pack (5) being arranged on the handle (4), characterized in that: The handle (4) comprises a left grip shell flap (41) and a right grip shell flap (42), the left and right grip shell flaps (41, 42) are face-to-face with each other and have the same shape and size, a left grip cavity (411) is formed at the upper end of the left grip shell flap (41), a left battery pack plug-in support seat (412) is formed at the middle front side, a left lever connecting arm (413) is formed at the lower end of the left grip shell flap (41), a right grip cavity (421) corresponding to the left grip cavity (411) is formed at the upper end of the right grip shell flap (42), a left battery pack plug-in support seat (412) is formed at the middle front side, and a left battery pack plug-in support seat (413) is formed at the lower end of the left grip shell flap (41). The right plug-in support seat (422) of the battery pack corresponding to the supporting seat (412) is formed, and a right connecting arm (423) of the push rod corresponding to the left connecting arm (413) of the push rod is formed at the lower end of the right grip shell (42). The left and right connecting arms (413, 423) of the push rod are jointly connected to the upper end of the push rod (3). The battery pack (5) is simultaneously plugged and unplugged with the opposite sides of the left and right plug-in support seats (412, 422) of the battery pack, and the battery pack (5) provides power support to the jack body (1) so that the jack body (1) can lift or lower the load.

2. The electric horizontal hydraulic jack according to claim 1, characterized in that: A vertical protection mechanism (6) for the click bar is provided between the click bar (2) and the front end of the jack body (1) for preventing the click bar (3) from swinging toward the jack body (1) or away from the jack body (1) or even overturning when in use.

3. The electric horizontal hydraulic jack according to claim 1, characterized in that: A left grip shell flap control panel clearance opening (414) is formed on the upper rear side of the left grip shell flap (41), and a control panel left insertion groove (4141) is formed at the upper and lower positions corresponding to the left grip shell flap control panel clearance opening (414); a right grip shell flap control panel clearance opening corresponding to the left grip shell flap control panel clearance opening (414) is formed on the upper rear side of the right grip shell flap (42), and a control panel right insertion groove having the same structure as the control panel left insertion groove (4141) and corresponding position is formed at the upper and lower positions corresponding to the right grip shell flap control panel clearance opening; a control panel (7) is arranged between the left grip shell flap control panel clearance opening (414) and the right grip shell flap control panel clearance opening, and the left upper edge and lower edge of the control panel (7) are inserted and matched with the control panel left insertion groove (4141), and the right upper edge of the control panel (7) is inserted and matched with the control panel left insertion groove (4141), and the right upper edge of the control panel (7) is inserted and matched with the left and the lower edge is inserted and matched with the right insertion groove of the control panel, and the function button (71) on the control panel faces left and is in an exposed state; a circuit board (8a) electrically connected to the control panel through a line is fixed on the left grip shell flap (41) and at a position corresponding to the right side of the left plug-in support seat (412) of the battery pack, or on the right grip shell flap (42) and at a position corresponding to the left side of the right plug-in support seat (422) of the battery pack; an electrode seat (8b) is inserted between the opposite sides of the left and right plug-in support seats (412, 422) of the battery pack, and the electrode seat (8b) is electrically connected to the circuit board (8a) through a wire, and the battery pack (5) is electrically connected to the electrode seat (8b) by physical contact with its metal contact; the jack body (1) is electrically connected to the circuit board (8a) through a line; the left and right grip shell flaps (41, 42) are shaped as a pair of P shapes that face each other.

4. The electric horizontal hydraulic jack according to claim 1 or 3, characterized in that: A left battery pack plug-in slot (4121) is formed in a longitudinal state on the front right side of the left battery pack plug-in support seat (412), and a left battery pack foot card slot (4122) is formed in the front upper part; a right battery pack plug-in slot (4221) is formed in a longitudinal state on the front left side of the right battery pack plug-in support seat (422), and a right battery pack foot card slot (4222) is formed in the front upper part; the left and right battery pack plug-in slots (4121, 4221) correspond to each other, and the left and right battery pack foot card slots (4121, 4221) correspond to each other. The right card slots (4122, 4222) are located on the same straight line. A battery pack inserting rib (51) is provided on both sides of the battery pack (5) and at positions corresponding to the left and right plug-in and pull-out slots (4121, 4221) of the battery pack. The battery pack inserting rib (51) is plug-in-fitted with the left and right plug-in and pull-out slots (4121, 4221) of the battery pack. The battery pack inserting rib (51) of the battery pack (5) is plug-in-fitted with the left and right card slots (4122, 4222) of the battery pack card foot. A battery pack card foot (52) is provided on the battery pack (5) and at positions corresponding to the left and right card slots (4122, 4222) of the battery pack card foot. The battery pack card foot button (53) on the battery pack (5) enables the battery pack card foot (52) to be simultaneously engaged with or released from the left and right card slots (4122, 4222) of the battery pack card foot.

5. The electric horizontal hydraulic jack according to claim 1 or 3, characterized in that: The push rod (3) is in a tubular structure. A left semicircular cavity (415) with an opening facing right is formed at the lower end of the left gripping shell flap (41). A left longitudinal tenon (4151) protruding from the cavity bottom wall is formed on the cavity bottom wall of the left semicircular cavity (415). A right semicircular cavity (424) with an opening facing left is formed at the lower end of the right gripping shell flap (42). A right longitudinal tenon protruding from the cavity bottom wall is formed on the cavity bottom wall of the right semicircular cavity (424). The right longitudinal tenon corresponds to the left longitudinal tenon (4151). A tenon groove (31) is formed on the left and right sides of the upper end of the push rod (3). The left longitudinal tenon (4151) is engaged with the tenon groove (31) located on the left side of the upper end of the push rod (3), and the right longitudinal tenon is engaged with the tenon groove (3) located on the right side of the upper end of the push rod (3), so that the lower ends of the left grip shell flap (41) and the right grip shell flap (42) are engaged with the upper end of the push rod (3), and the upper ends, middle parts and lower ends of the left and right grip shell flaps (41, 42) are fixed by shell flap connecting screws (43), wherein the shell flap connecting screws (43) for connecting the lower ends of the left and right grip shell flaps (41, 42) pass through the screw clearance holes (32) opened on the push rod (3).

6. The electric horizontal hydraulic jack according to claim 1, characterized in that: The lower end of the lever (3) is inserted into the lever insertion cavity (331) of the lever seat (33) and is locked by a locking screw (332) arranged on the side wall of the lever seat (33). A lever seat hinge ear (333) is formed on the rear side of the lower end of the lever seat (33). The lever seat hinge ear (333) is hinged to the rear side of the lever (2) hinged to the front end of the jack body (1). A lever seat locking ear (334) is formed on the front side of the lower end of the lever seat (33). 2) and at a position corresponding to the locking ear (334) of the snap bar seat, a snap bar vertical and folding control mechanism (21) for locking or unlocking the locking ear (334) of the snap bar seat is provided, and when the locking ear (334) of the snap bar seat is in a locked state, the snap bar (3) is in a vertical state, and when the locking ear (334) of the snap bar seat is in an unlocked state, the snap bar (3) is folded on the upper part of the jack body (1) and is in a parallel state with the upper part of the jack body (1).

7. The electric horizontal hydraulic jack according to claim 6, characterized in that: A locking screw cavity (3341) is formed in the middle of the front side of the locking ear (334) of the push rod seat, and the hinge ear (333) of the push rod seat is hinged to the rear side of the push rod (2) through the hinge ear pin (3331) of the push rod seat; the push rod vertical and folding control mechanism (21) includes a central support column (211), a locking screw matching nut (212), a locking screw (213) and a locking screw operating handle (214), the central support column (211) is formed in the middle of the push rod (2), and a pair of nut shaft head supporting ears parallel to each other are extended on the front side of the central support seat (211). (2111), the locking screw and the nut (212) are located between a pair of nut shaft head supporting ears (2111), and a locking screw and the nut supporting shaft head (2121) are fixed on the left and right sides of the locking screw and the nut (212), the locking screw and the nut supporting shaft head (2121) are supported on the nut shaft head supporting ears (2111) and are blocked by the blocking member (21211), the locking screw (213) is threadedly engaged with the locking screw and the nut (212) at a position corresponding to the locking screw cavity (3341), and a locking screw (213) is threadedly engaged with the locking screw and the nut (212) on the locking screw (213) and on the pair. A locking screw pressing ring (2131) is formed at a position above the locking ear (334) of the push rod seat for tightly contacting or releasing the contact with the upper surface of the locking ear (334) of the push rod seat, a locking screw ball head (2132) is formed at the top of the locking screw (213), and a locking screw ball head matching cavity (2141) is formed at the upper end of the locking screw operating handle (214), the locking screw ball head matching cavity (2141) is matched with the locking screw ball head (2132), and the upper end of the locking screw operating handle (214) is connected to the locking screw by the locking screw operating handle pin (2142). The locking screw ball head (2132) is hinged, and the lower end of the locking screw operating handle (214) is configured as a free end and abuts against the front side of the click handle (2); a pair of pin-shaft hinge seats (22) are configured at the upper rear side of the click handle (2) and at positions corresponding to the pin shafts (3331) of the hinged ears of the click handle seat, and the hinged ears (333) of the click handle seat are located between the pair of pin-shaft hinge seats (22), and the pin shafts (3331) of the hinged ears of the click handle seat together with the hinged ears (333) of the click handle seat are hinged to the pair of pin-shaft hinge seats (22); the blocking member (21211) is a retaining spring or a cotter pin.

8. The electric horizontal hydraulic jack according to claim 2, characterized in that: The said lever vertical protection mechanism (6) comprises a lever (61) for preventing abnormal turning of the lever and a torsion spring (62). The lever (61) for preventing abnormal turning of the lever is fixed at the front end of the said jack body (1) at a position corresponding to the rear side of the said lever (2). The torsion spring (62) is arranged in a torsion spring cavity (231) between a pair of left hinge seats (23) of the lever formed on the lever (2) and the middle part of the torsion spring (62) cooperates with the said jack body (1). One of the pair of torsion spring legs (621) of the torsion spring (62) is hooked at the front end of the jack body (1), and the other torsion spring leg is abutted against the lever (2).

9. The electric horizontal hydraulic jack according to claim 8, characterized in that: The jack body (1) comprises a left wall panel (11), a right wall panel (12), a pair of lifting arms (13), a left pull rod (14a), a right pull rod (14b), a saddle (15), a front protective cover (16), a rear protective cover (17) and a lifting arm electric lifting drive mechanism (18); the left and right wall panels (11, 12) correspond to each other on the left and right sides; a left wall panel universal wheel frame (111) is fixed to the left side of the front end of the left wall panel (11); a left wall panel universal wheel (1111) is rotatably provided on the left wall panel universal wheel frame (111); a right wall panel universal wheel frame (121) is fixed to the right side of the front end of the right wall panel (12); a right wall panel universal wheel (121) is rotatably provided on the right wall panel universal wheel frame (121) 1211), a directional axle (19) is arranged between the rear ends of the left wall panel (11) and the right wall panel (12), a directional axle left shaft head (191) of the directional axle (19) extends to the left side of the left wall panel (11) at a position corresponding to the directional axle left shaft head hole (112) opened at the rear end of the left wall panel (11) and a left directional wheel (1911) is rotatably arranged, a directional axle right shaft head (192) of the directional axle (19) extends to the right side of the right wall panel (12) at a position corresponding to the directional axle right shaft head hole (112) opened at the rear end of the right wall panel (12) and corresponding to the directional axle left shaft head hole (112) and a right directional wheel (1921) is rotatably arranged, and the left and right wall panels (11, 12) are provided with a plurality of directional wheels. A front protective cover support shaft (10) is fixed between the front end and the opposite side by a front protective cover support shaft fixing screw (101); a left snap handle hinge shaft (113) is fixed on the left wall panel (11) and at a position corresponding to the left end of the snap handle (2); the pair of snap handle hinge seats (23) are hinged to the left snap handle hinge shaft (113); the middle part of the torsion spring (62) is sleeved on the left snap handle hinge shaft (113); one of the pair of torsion spring legs (621) is hooked on the front protective cover support shaft (10); a right snap handle hinge shaft (122) is fixed on the right wall panel (12) and at a position corresponding to the right end of the snap handle (2); the right snap handle hinge seat (23) at the right end of the snap handle (2) is hinged to the left snap handle hinge shaft (113); 4) is hinged to the right hinge shaft (122) of the pressing handle, a left fixing screw (114) of the blocking rod is arranged on the left wall panel (11) and at a position corresponding to the left end of the said pressing handle anti-abnormal turning blocking rod (61), and a right fixing screw (123) of the blocking rod is arranged on the right wall panel (12) and at a position corresponding to the right end of the said pressing handle anti-abnormal turning blocking rod (61), the left end of the said pressing handle anti-abnormal turning blocking rod (61) is fixed to the left fixing screw (114) of the blocking rod, and the right end is fixed to the right fixing screw (123) of the blocking rod, a pair of lifting arms (13) are parallel to each other, and the front end upper parts of the pair of lifting arms (13) are rotatably supported on the middle part of the lifting arm shaft (131) through the lifting arm shaft sleeve (133),The left end of the boom shaft (131) extends to the left side of the left wall plate (11) through the left boom shaft head (1311) and is fixed by the left boom shaft head nut (13111); the right end of the boom shaft (131) extends to the right side of the right wall plate (12) through the right boom shaft head (1312) and is fixed by the right boom shaft head nut (13121); the rear ends of the pair of booms (13) are hinged to the saddle seat (151) through the saddle seat hinge shaft (1512) on the saddle seat (151); the upper part between the pair of booms (13) is shielded by the boom shielding plate (132); a pair of connecting pieces (134) are provided between the opposite sides of the pair of booms (13); the front ends of the pair of connecting pieces (134) are connected to the saddle seat (151) through the saddle seat hinge shaft (1512) on the saddle seat (151); The ends of the left tie rod (14a) are hinged to the lower front ends of a pair of lifting arms (13) through a connecting piece hinge shaft (1341), the rear ends of the pair of connecting pieces (134) are hinged to the electric lifting drive mechanism (18) of the lifting arms, the front end of the left tie rod (14a) is connected to the right side of the left wall panel (11) through a left tie rod connecting screw (14c) and is locked by a left tie rod connecting screw locking nut (14d) located on the left side of the left wall panel (11), the rear end of the left tie rod (14a) is hinged to the left tie rod hinge shaft head on the left side of a saddle seat (151) for setting a saddle (15) through a left tie rod hinge shaft head hole (14h), the front end of the right tie rod (14b) is connected to the left side of the right wall panel (12) through a right tie rod connecting screw (14e) and is locked by a left tie rod connecting screw locking nut (14d) located on the left side of the left wall panel (11), 2) is locked by a right tie rod connecting screw locking nut (14f), the rear end of the right tie rod (14b) is hinged to the right tie rod hinge shaft head (1511) on the right side of the saddle seat (151) for setting the saddle through the right tie rod hinge shaft head hole (14g), the saddle (15) is fixed to the saddle seat (151) by screws, the front guard cover (16) is inserted into the front guard cover support shaft (10) at a position corresponding to the front guard cover support shaft (10) through a front guard cover support shaft hole (1611) formed on a front guard cover support ear (161) on the left and right sides of its upper part, the middle part of the front guard cover (16) corresponds to the front side of the electric lifting drive mechanism (18) of the boom and is connected to the electric lifting drive mechanism (18) of the boom. The front side shielding of the front protective cover (18) is provided, the lower left side and the right side of the front protective cover (16) are respectively formed with front protective cover fixing ears (162), and the front protective cover fixing ears (162) are respectively fixed to the lower front end of the left and right wall panels (11, 12) by screws, the rear protective cover (17) corresponds to the rear side of the directional wheel shaft (19) and is respectively fixed to the rear ends of the left wall panel (11) and the right wall panel (12) facing one side by rear protective cover fixing ears (171) formed at the left and right ends of the rear protective cover (17), and the electric lifting drive mechanism (18) of the crane arm comprises a motor (181), a jack base (182), an oil pump (183), an electromagnetic valve (184), an oil tank (185), an oil cylinder (186) and a protective cover plate (187),The motor (181) is arranged in a horizontal cantilever state and is electrically connected to the circuit board (8a) via a circuit. The motor (181) is fixedly connected to the front side of the oil pump (183) via a motor base (1811) and forms a transmission matching relationship with the oil pump (183). The oil pump (183) is matched with the front side of the jack base (182), and the oil pump (183) is communicated with an oil passage in the jack base (182). The jack base (182) The left and right sides of the jack (184) are fixed between the front ends of the left and right wall panels (11, 12) by screws, and correspond to the rear side of the pressing handle (2). The solenoid valve (184) is matched with the solenoid valve mounting hole (1826) on the jack base (182) and communicates with the oil return passage in the jack base (182). The oil tank (185) is fixed above the jack base (182) by the oil tank fixing screws (1851). The oil cylinder (186) is in a horizontal lying state with the jack. The rear side of the base (182) is matched with and communicates with the oil passage in the jack base (182), and the cover plate (187) is embedded between the left and right wall panels (11, 12) at a position corresponding to the upper side of the oil tank (185). When the oil pump (183) has an oil pump suction pipe interface (1831), the oil pump suction pipe interface (1831) is connected and communicated with the oil tank (185), and the jack base (182) is connected to the oil tank (185) through its jack base. The oil return pipe (1821) is connected to and communicates with the oil tank (185); when the oil pump (183) does not have an oil pump suction pipe interface (1831), the jack base (182) is communicated with the oil tank (185) via the jack base oil return pipe (1821) and the jack base oil suction interface (1822); the right ends of the pair of connecting pieces (134) are connected to the end of the cylinder column (1861) of the oil cylinder (186) via the cylinder column connecting shaft head (1342).

10. The electric horizontal hydraulic jack according to claim 9, characterized in that: The oil pump (183) is a gear pump or a plunger pump, and when the oil pump (183) is a gear pump, the gear pump has an oil pump suction pipe interface (1831) connected to and in communication with the oil tank (185), and the jack base oil return pipe (1821) of the jack base (182) is connected to and in communication with the oil tank (185); and when the oil pump (183) is a plunger pump, the plunger pump does not have the oil pump suction pipe interface (1831), and the jack base (182) is connected to and in communication with the oil tank (185) by the jack base oil return pipe (1821) and the jack base oil suction interface (1822).

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