Horizontal hydraulic jack convenient for height adjustment

Abstract

The utility model discloses a horizontal hydraulic jack convenient for height adjustment, and belongs to the technical field of jacks. Comprising a rack component provided with two wallboards connected together; the cargo boom is hinged to the two wallboards; the pressing handle can drive the cargo boom to move; the front wheel frame is rotationally connected to the end part of the front end of the rack component, and a pair of front wheels are symmetrically mounted on the front wheel frame; the pair of rear wheel mounting frames are fixedly mounted at the rear end parts of the two wallboards respectively; and the pair of rear wheels are arranged below the two rear wheel mounting frames respectively, a rear wheel connecting component is mounted on each rear wheel, and the rear wheel connecting components can move up and down relative to the rear wheel mounting frames and are fixedly connected with the rear wheels at preset positions. The lifting device has the advantages that by arranging the front wheel frame and rear wheel connecting component capable of moving up and down relative to the rack component, the terrain clearance can be adjusted, operation is convenient and reliable, and the lifting device can be suitable for lifting vehicles and mechanical equipment with different terrain clearances.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of jack, concretely relates to a horizontal hydraulic jack convenient for height adjustment. BACKGROUND

[0002] When the vehicle encounters unexpected traffic accidents, human carelessness, force majeure factors or internal mechanical damage, maintenance work must be carried out, and especially for various types of high-quality motorized multi-wheel vehicles, manual simple operation is needed to jack up the vehicle to facilitate repair. The above-mentioned horizontal hydraulic jack is a kind of jack device widely used in supporting the weight of the vehicle or mobile equipment, adjusting the level of the equipment. It is mainly used in factories, transportation departments and other departments as vehicle repair and other lifting, supporting and other work. For example, when replacing the vehicle tire, the horizontal jack can be used to lift the vehicle to separate the tire from the ground to replace the tire. The structure of the horizontal jack is light, strong, flexible and reliable. One person can carry and operate it, and it has a wide range of applications. The main components of the existing horizontal jack include rack components, hydraulic cylinder components, lifting arm components, bracket components and knobs. The rack components include left and right wallboards arranged in parallel. The left and right wallboards are connected by bolts and nuts and form a detachable connection. The left and right wallboards are connected with support wheels. The lifting arm components are installed in the middle of the left and right wallboards. The bracket components are installed at the front end of the lifting arm components. When lifting the horizontal hydraulic jack, the knob is pressed repeatedly, the lifting arm components are pushed up by the hydraulic cylinder components, and finally the bracket components on the lifting arm components lift the heavy object.

[0003] There are many technical information about horizontal jacks in the disclosed Chinese patent documents. For example, CN217350537U (a horizontal jack), CN216512514U (a horizontal jack with an integrated rack), CN108466965B (a portable automatic horizontal jack), and CN216997450U (a horizontal jack with a reinforced structure) and others. However, for the existing horizontal jacks, the ground clearance of the rack components, i.e. the left and right wallboards, is constant, and this height is determined by the size of the support wheels and the connection position of the support wheels with the left and right wallboards. However, due to the different ground clearances of different types of vehicles and mechanical equipment, such as the large difference in chassis height between off-road vehicles and sports cars, different specifications of jacks with different lifting strokes are needed for operation, or auxiliary tools such as adjusting trays are used to lift the overall ground clearance of the horizontal jack. Not only is the operation tedious, time-consuming and labor-intensive, but also it cannot be well adapted to different types of vehicles and facilities, resulting in reduced versatility of a single jack and poor applicability.

[0004] The patent document with publication number CN116495655A introduces "a bottom disc height adjustable horizontal jack", which includes a base, a tray arranged on the base, and lifting seats arranged on both sides of the base. Each lifting seat is connected with a plurality of moving blocks through sliding. The moving blocks are arranged in pairs and are inclinedly provided with first pushing surfaces. The first pushing surfaces of the two moving blocks in each group are oppositely arranged. The side wall of the base is provided with abutting blocks, and each abutting block is located between the two moving blocks in each group. The abutting blocks are inclinedly provided with two second pushing surfaces. The second pushing surfaces are oppositely arranged. The second pushing surfaces abut against the corresponding first pushing surfaces. The lifting seat is provided with a driving assembly for driving the moving blocks to move. The two moving blocks in each group move close to or away from each other through the driving assembly. The connecting plate is fixed between the two lifting seats. The abutting blocks are raised or lowered by the movement of the moving blocks, thereby driving the base and the tray to rise or fall, and the distance between the tray and the vehicle chassis can be adjusted. Although the bottom disc height of the horizontal jack can be adjusted, the overall structure is extremely complex, the number of components is large, the production cost is high, and the assembly is very inconvenient. Meanwhile, the running flexibility is poor.

[0005] In view of the above, it is necessary to reasonably improve the structure of the existing horizontal hydraulic jack to realize quick and reliable adjustment of the overall ground clearance of the horizontal hydraulic jack and ensure its flexibility. Therefore, the applicant has made a useful design, and the technical scheme to be introduced below is produced in this background. Practical new type content

[0006] The task of the present application is to provide a horizontal hydraulic jack with compact structure, reliable durability, high flexibility and low production cost, which is convenient for height adjustment, and helps to realize reliable adjustment of the overall ground clearance of the horizontal hydraulic jack by setting the front wheel frame and the rear wheel connecting member, thereby improving the use convenience and realizing the universality of the use scene.

[0007] The utility model discloses a task is thus completed, a kind of horizontal hydraulic jack of height adjustment is convenient, comprising: frame component, the frame component has two parallel spaced apart and connect together wallboard;Lifting arm, the lifting arm is installed on the frame component and is hinged with two wallboards;Knob, the knob can be driven lifting arm movement by hydraulic assembly;Characterized in that, further comprising: a front wheel frame, the front wheel frame is rotatably connected at the front end of the frame component, and the front wheel frame can be rotated relative to frame component and is fixed with two wallboards at preset position, and a pair of front wheels are symmetrically installed on the front wheel frame;A pair of rear wheel mounting racks, two rear wheel mounting racks are respectively fixedly installed at the rear end of each corresponding wallboard position;A pair of rear wheels, two rear wheels are respectively arranged at the position below each corresponding rear wheel mounting rack, and a rear wheel connecting member is installed on the rear wheel, the rear wheel connecting member is cooperatively installed with the rear wheel mounting rack, and the rear wheel connecting member can be realized relative to the rear wheel mounting rack up and down movement and is fixedly connected with the rear wheel mounting rack at preset position, so that the adjustment of relative position of rear wheel and frame component is achieved.

[0008] In one specific embodiment of the utility model, the front wheel frame is a "П" shaped structure, and the front wheel frame has a front wheel frame transverse plate and two front wheel frame mounting plates formed at the length direction ends of the front wheel frame transverse plate, and the two front wheel frame mounting plates are perpendicular to the front wheel frame transverse plate;Among them, two front wheel frame mounting plates are respectively arranged on the outer surface of each corresponding wallboard, and the frame component further comprises a wallboard front hinge shaft passing through two wallboards, the two ends of the wallboard front hinge shaft length direction pass through the two wallboards and are connected with each corresponding front wheel frame mounting plate, and a front wheel frame mounting plate hinge bolt is further provided on the two front wheel frame mounting plates, and the two front wheel frame mounting plate hinge bolts are respectively installed on the end position of the wallboard length direction of the wallboard front hinge shaft, so as to realize the rotary connection between the two front wheel frame mounting plates and each corresponding wallboard, so that the front wheel frame and the frame component are hinged together.

[0009] In another specific embodiment of the utility model, two front wheel frame mounting plates of the front wheel frame are respectively provided with a front wheel frame mounting plate fixing hole corresponding to the upper position of the middle of the length direction of the front wheel frame mounting plate, the front wheel frame mounting plate fixing hole penetrates the thickness direction of the front wheel frame mounting plate, a wallboard front limiting hole is further provided at the upper position of the front end of the length direction of the wallboard, a wallboard front displacement hole is further provided at the lower position of the front end of the length direction of the wallboard, a wallboard front limiting hole shaft sleeve is further connected between the two wallboards and at the position corresponding to the wallboard front limiting hole, a wallboard front displacement hole shaft sleeve is further connected between the two wallboards and at the position corresponding to the wallboard front displacement hole, a front wheel frame positioning support shaft is further provided on the front wheel frame, and a front wheel frame positioning support shaft fixing pin is further provided on the front wheel frame positioning support shaft, when the rack component is in the low position, the length direction of the front wheel frame mounting plate is parallel to the length direction of the wallboard, the front wheel frame positioning support shaft can pass through the two front wheel frame mounting plate fixing holes and the wallboard front limiting hole and enter the wallboard front limiting hole shaft sleeve, and the front wheel frame positioning support shaft can be fixed with the front wheel frame and the two wallboards through the front wheel frame positioning support shaft fixing pin, thereby realizing the fixed connection between the front wheel frame and the wallboard, when the rack component is in the high position, the front wheel frame can be turned down around the wallboard front hinge shaft, the front wheel frame mounting plate fixing hole can be moved to the position corresponding to the wallboard front displacement hole, the front wheel frame positioning support shaft can pass through the two front wheel frame mounting plate fixing holes and the wallboard front displacement hole and enter the wallboard front displacement hole shaft sleeve, and the front wheel frame positioning support shaft can be fixed with the front wheel frame and the wallboard through the front wheel frame positioning support shaft fixing pin, thereby realizing the fixed connection between the front wheel frame and the wallboard again.

[0010] In another specific embodiment of the utility model, the two front wheels are respectively arranged at the front end lower position of the corresponding front wheel frame mounting plate close to the front wheel frame transverse plate in a symmetrical state, the bottom end of the front wheel is lower than the bottom end of the front wheel frame mounting plate, and a front wheel connecting shaft is further connected between the two front wheels, the front wheel connecting shaft penetrates the two front wheel frame mounting plates and is rotationally connected with the front wheel frame mounting plates, so that the two front wheels are rotationally connected on the front wheel frame.

[0011] In another specific embodiment of the utility model, the front wheel frame transverse plate and the two front wheel frame mounting plates are integrally formed, that is, the front wheel frame is integrally formed.

[0012] In still another specific embodiment of the utility model, the rear wheel connecting member comprises a wheel frame, a rotating module connected to the wheel frame, and a rear wheel connecting column formed on the rotating module; wherein the rear wheel is installed in the wheel frame, and the rear wheel connecting column is vertically upwardly extended, the outer contour of the rear wheel connecting column is matched with the cavity of the rear wheel mounting rack cooperating cavity, and the rear wheel connecting column is slidably matched with the rear wheel mounting rack cooperating cavity and can reciprocatingly slide in the rear wheel mounting rack cooperating cavity, a rear wheel connecting column limiting hole and a rear wheel connecting column displacement hole are formed on the column body of the rear wheel connecting column from bottom to top, and the rear wheel connecting member further comprises a rear wheel fixing pin shaft and a rear wheel fixing pin shaft locking pin arranged on the rear wheel fixing pin shaft; wherein when the rack component is in the low position, the rear wheel connecting column limiting hole is correspondingly arranged with the rear wheel mounting rack locking hole, and the rear wheel fixing pin shaft sequentially passes through the rear wheel mounting rack locking hole and the rear wheel connecting column limiting hole, the rear wheel fixing pin shaft can be fixedly connected with the rear wheel mounting rack cooperating sleeve and the rear wheel connecting column through the rear wheel fixing pin shaft locking pin, thereby realizing the fixed connection between the rear wheel mounting rack, the rear wheel and the rear wheel connecting member; when the rack component is in the high position, the rear wheel connecting column displacement hole is correspondingly arranged with the rear wheel mounting rack locking hole, and the rear wheel fixing pin shaft sequentially passes through the rear wheel mounting rack locking hole and the rear wheel connecting column displacement hole, and the rear wheel fixing pin shaft can be fixedly connected with the rear wheel mounting rack cooperating sleeve and the rear wheel connecting column through the rear wheel fixing pin shaft locking pin, thereby realizing the fixed connection between the rear wheel mounting rack, the rear wheel and the rear wheel connecting member.

[0013] In still another specific embodiment of the utility model, the rear wheel connecting member comprises a wheel frame, a rotating module connected to the wheel frame, and a rear wheel connecting column formed on the rotating module; wherein the rear wheel is installed in the wheel frame, and the rear wheel connecting column is vertically upwardly extended, the outer contour of the rear wheel connecting column is matched with the cavity of the rear wheel mounting rack cooperating cavity, and the rear wheel connecting column is slidably matched with the rear wheel mounting rack cooperating cavity and can reciprocatingly slide in the rear wheel mounting rack cooperating cavity, a rear wheel connecting column limiting hole and a rear wheel connecting column displacement hole are formed on the column body of the rear wheel connecting column from bottom to top, and the rear wheel connecting member further comprises a rear wheel fixing pin shaft and a rear wheel fixing pin shaft locking pin arranged on the rear wheel fixing pin shaft; wherein when the rack component is in the low position, the rear wheel connecting column limiting hole is correspondingly arranged with the rear wheel mounting rack locking hole, and the rear wheel fixing pin shaft sequentially passes through the rear wheel mounting rack locking hole and the rear wheel connecting column limiting hole, the rear wheel fixing pin shaft can be fixedly connected with the rear wheel mounting rack cooperating sleeve and the rear wheel connecting column through the rear wheel fixing pin shaft locking pin, thereby realizing the fixed connection between the rear wheel mounting rack, the rear wheel and the rear wheel connecting member; when the rack component is in the high position, the rear wheel connecting column displacement hole is correspondingly arranged with the rear wheel mounting rack locking hole, and the rear wheel fixing pin shaft sequentially passes through the rear wheel mounting rack locking hole and the rear wheel connecting column displacement hole, and the rear wheel fixing pin shaft can be fixedly connected with the rear wheel mounting rack cooperating sleeve and the rear wheel connecting column through the rear wheel fixing pin shaft locking pin, thereby realizing the fixed connection between the rear wheel mounting rack, the rear wheel and the rear wheel connecting member.

[0014] In still another specific embodiment of the utility model, the rear wheel and the rear wheel connecting member are combined to form a universal wheel assembly.

[0015] In still another specific embodiment of the utility model, a wall plate handle is further installed on the outer side surface of the two wall plates.

[0016] In another embodiment of the utility model, the end of the length direction of the lifting arm away from the length direction is also provided with a lifting bracket, which is used for lifting the heavy object.

[0017] The utility model discloses beneficial effect lies in: first, this technical scheme is through optimizing structure and adding front wheel frame and rear wheel mounting bracket, rear wheel connecting member, and front wheel frame can rotate relative to frame part and remove to the preset position of front wheel frame mounting board fixed hole and wallboard front displacement hole correspondence and with wallboard fixed together, and rear wheel connecting member can reciprocate on rear wheel mounting bracket, when rear wheel mounting bracket lock hole and rear wheel connecting column displacement hole correspond, fixed realization frame part rear -elevation, thereby make front wheel frame and rear wheel connecting member respectively drive front wheel and rear wheel remove and make it produce height direction's displacement, thereby adjust two wallboard's ground clearance, and can make frame part and connect on frame part's lifting arm, lifting bracket and press hand common in movement, thereby through the rotation of front wheel frame and the switching of upper and lower hole positions of rear wheel connecting member to carry out overall height adjustment, and do not need to help such as adjusting tray and so on auxiliary tool or is through lengthening frame to change use height, through the change of own part position can realize height adjustment, convenient operation is reliable, and the structure is compact, can satisfy different ground clearance's vehicle and mechanical equipment's lifting demand, thereby realize the universality of use scene, secondly, rear wheel and rear wheel connecting member can be combined as universal wheel assembly, realize convenient adjustment jack ground clearance, guarantee the flexibility of horizontal hydraulic jack overall movement, in addition, this technical scheme has little change to original structure, realizes the best optimization of functional promotion, and can fully utilize original production line to produce, and production cost is low, has remarkable popularization significance. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is whole structure schematic diagram when the utility model is in low position state;

[0019] Figure 2 It is whole structure schematic diagram when the utility model is in high position state;

[0020] Figure 3 It is the exploded view of the utility model one embodiment's three-dimensional structure.

[0021] In the figure: 1. frame component, 11. wall plate, 111. wall plate front limit hole, 1111. wall plate front limit hole shaft sleeve, 112. wall plate front displacement hole, 1121. wall plate front displacement hole shaft sleeve, 113. wall plate handle, 12. wall plate front hinged shaft; 2. lifting arm; 3. knob; 4. front wheel frame, 41. front wheel frame transverse plate, 42. front wheel frame mounting plate, 421. front wheel frame mounting plate hinged bolt, 422. front wheel frame mounting plate fixed hole, 43. front wheel frame positioning support shaft, 431. front wheel frame positioning support shaft fixed pin; 5. front wheel, 51. front wheel connecting shaft; 6. rear wheel mounting frame, 61. rear wheel mounting frame connecting plate, 62. rear wheel mounting frame positioning plate, 63. rear wheel mounting frame matching sleeve, 631. rear wheel mounting frame matching cavity, 632. rear wheel mounting frame locking hole; 7. rear wheel; 8. rear wheel connecting member, 81. wheel frame, 82. rotating module, 83. rear wheel connecting column, 831. rear wheel connecting column limit hole, 832. rear wheel connecting column displacement hole, 84. rear wheel fixed pin shaft, 841. rear wheel fixed pin shaft locking pin; 9. lifting bracket. DETAILED DESCRIPTION

[0022] The following will be described in the form of examples, but the description of the examples is not a limitation of the technical scheme of the utility model, and any equivalent transformation only in form but not in substance according to the concept of the utility model should be regarded as the technical scheme scope of the utility model.

[0023] In the following description, the directional or positional concepts such as up, down, left, right, front and back are all relative to the current Figure 1 Position state, so it cannot be understood as a special limitation of the technical scheme provided by the utility model.

[0024] Please see Figures 1 to 3 The utility model relates to a horizontal hydraulic jack convenient for height adjustment, which comprises a frame component 1, two parallel and spaced wall plates 11 connected together, a lifting arm 2 installed on the frame component 1 and hinged to the two wall plates 11, and a knob 3 capable of driving the lifting arm 2 to move through a hydraulic assembly.

[0025] The utility model provides a technical scheme has as follows technical points: the front wheel frame 4 is rotatably connected to the front end of the frame component 1, and the front wheel frame 4 can rotate relative to the frame component 1 and is fixed to the two wallboards 11 at the preset position, and a pair of front wheels 5 are symmetrically installed on the front wheel frame 4; a pair of rear wheel mounting racks 6 are fixedly installed at the rear end of each corresponding wallboard 11; a pair of rear wheels 7 are arranged below each corresponding rear wheel mounting rack 6, and a rear wheel connecting member 8 is installed on each rear wheel 7, the rear wheel connecting member 8 is installed together with the rear wheel mounting rack 6, and the rear wheel connecting member 8 can move up and down relative to the rear wheel mounting rack 6 and is fixed to the rear wheel mounting rack 6 at the preset position, so that the relative position of the rear wheel 7 and the frame component 1 is adjusted.

[0026] In the embodiment, the front wheel frame 4 is an arch structure, and the front wheel frame 4 has a front wheel frame transverse plate 41 and two front wheel frame mounting plates 42 formed at the lengthwise ends of the front wheel frame transverse plate 41, and the two front wheel frame mounting plates 42 are perpendicular to the front wheel frame transverse plate 41; the two front wheel frame mounting plates 42 are respectively arranged on the outer surfaces of the two wallboards 11, and the frame component 1 further includes a wallboard front hinge shaft 12 penetrating the two wallboards 11, the two ends of the wallboard front hinge shaft 12 penetrate the two wallboards 11 and are connected to the corresponding front wheel frame mounting plates 42, and a front wheel frame mounting plate hinge bolt 421 is arranged on each front wheel frame mounting plate 42, and the two front wheel frame mounting plate hinge bolts 421 are respectively arranged at the ends of the wallboard front hinge shaft 12 penetrating the wallboards 11, so that the two front wheel frame mounting plates 42 are rotatably connected to the corresponding wallboards 11, and the front wheel frame 4 is hingedly connected to the frame component 1.

[0027] In the embodiment, the front wheel frame 4 can rotate around the wallboard front hinge shaft 12 connected to the wallboard 11 as the rotation center axis, the distance from the front wheel connecting shaft 51 to the rotation center axis is the rotation radius, and the angle between the two connecting holes, the wallboard front limiting hole 111 and the wallboard front displacement hole 112 on the wallboard 11, and the line connecting the rotation center axis is the rotation angle of the front wheel frame 4, so that the front wheel frame 4 can rotate around the wallboard front hinge shaft 12.

[0028] Further, a front wheel frame mounting plate fixing hole 422 is formed in each of the two front wheel frame mounting plates 42 and at a position corresponding to the upper middle of the length direction of the plate body of the front wheel frame mounting plate 42, the front wheel frame mounting plate fixing hole 422 penetrating the thickness direction of the front wheel frame mounting plate 42; a wall plate front limiting hole 111 is also formed at a position near the upper front end of the length direction of the wall plate 11, and a wall plate front displacement hole 112 is also formed at a position corresponding to the lower side of the wall plate front limiting hole 111 at the front end of the length direction of each of the two wall plates 11; a wall plate front limiting hole shaft sleeve 1111 is also connected between the two wall plates 11 at a position corresponding to the wall plate front limiting hole 111, and a wall plate front displacement hole shaft sleeve 1121 is also connected between the two wall plates 11 at a position corresponding to the wall plate front displacement hole 112, and a front wheel frame positioning support shaft 43 is also provided on the front wheel frame 4, and a front wheel frame positioning support shaft fixing pin 431 is also provided on the front wheel frame positioning support shaft 43; see Figure 1 , when the rack component 1 is in the low position, the length direction of the front wheel frame mounting plate 42 is parallel to the length direction of the wall plate 11, the front wheel frame positioning support shaft 43 can pass through the two front wheel frame mounting plate fixing holes 422 and the wall plate front limiting hole 111 and enter the wall plate front limiting hole shaft sleeve 1111, and the front wheel frame positioning support shaft 43 can be fixed to the front wheel frame 4 and the two wall plates 11 by the front wheel frame positioning support shaft fixing pin 431, thereby achieving fixed connection between the front wheel frame 4 and the wall plate 11; when the rack component 1 is in the high position, see Figure 2 and Figure 3 , the front wheel frame 4 can be flipped downward around the wall plate front hinge shaft 12, and the front wheel frame mounting plate fixing hole 422 can be moved to a position corresponding to the wall plate front displacement hole 112, the front wheel frame positioning support shaft 43 can pass through the two front wheel frame mounting plate fixing holes 422 and the wall plate front displacement hole 112 and enter the wall plate front displacement hole shaft sleeve 1121, and the front wheel frame positioning support shaft 43 can be fixed to the front wheel frame 4 and the wall plate 11 by the front wheel frame positioning support shaft fixing pin 431, thereby achieving fixed connection between the front wheel frame 4 and the wall plate 11 again.

[0029] It should be noted that: in the technical scheme, only one wall plate front displacement hole 112 is arranged on the wall plate 11, and the front wheel frame mounting plate fixing hole 422 of the front wheel frame 4 can only coincide with the single wall plate front displacement hole 112 after the front wheel frame 4 is turned down, so that the front wheel frame 4 can only be fixed at a preset position after being turned down. Of course, the number of the aforementioned wall plate front displacement hole 112 is not limited to this, and the number of wall plate front displacement holes 112 can be increased according to actual needs during production, so that the front wheel frame 4 can be fixed at multiple preset positions at the front end of the wall plate 11, which are all within the protection scope of the utility model.

[0030] Please continue to see Figures 1 to 3 The two aforementioned front wheels 5 are arranged in a symmetrical state at the front end lower position of the corresponding front wheel frame mounting plate 42 close to the front wheel frame transverse plate 41, and the bottom end of the aforementioned front wheel 5 is lower than the bottom end of the aforementioned front wheel frame mounting plate 42. A front wheel connecting shaft 51 is connected between the two aforementioned front wheels 5, which penetrates through the two front wheel frame mounting plates 42 and is rotationally connected with them, so that the two aforementioned front wheels 5 are rotationally connected to the aforementioned front wheel frame 4.

[0031] In the embodiment, the aforementioned front wheel frame transverse plate 41 and the two front wheel frame mounting plates 42 are integrally formed, that is, the aforementioned front wheel frame 4 is integrally formed, and the connection between the front wheel frame transverse plate 41 and the two front wheel frame mounting plates 42 is in a circular arc transition. The aforementioned front wheel frame 4 is integrally formed, which has high structural strength and is convenient for production.

[0032] Further, the aforementioned rear wheel mounting frame 6 has a rear wheel mounting frame connecting plate 61 and a rear wheel mounting frame positioning plate 62. The aforementioned rear wheel mounting frame connecting plate 61 is attached to the outer surface of the lengthwise rear end of the aforementioned wall plate 11, and is fixedly connected with the aforementioned wall plate 11. The aforementioned rear wheel mounting frame positioning plate 62 is vertically arranged above the aforementioned rear wheel mounting frame connecting plate 61, and a rear wheel mounting frame matching sleeve 63 is formed on the rear wheel mounting frame positioning plate 62. A rear wheel mounting frame matching cavity 631 is formed in the rear wheel mounting frame matching sleeve 63 from the upper part to the lower part, and a rear wheel mounting frame locking hole 632 is formed in the body of the rear wheel mounting frame matching sleeve 63.

[0033] Please see Figure 2 and Figure 3The rear wheel connecting member 8 comprises a wheel frame 81, a rotating module 82 connected to the wheel frame 81, and a rear wheel connecting column 83 formed on the rotating module 82; wherein the rear wheel 7 is installed in the wheel frame 81, and the rear wheel connecting column 83 extends upward along the vertical direction, the outer contour of the rear wheel connecting column 83 is matched with the cavity of the rear wheel mounting frame locking hole 632, the rear wheel connecting column 83 and the rear wheel mounting frame locking hole 632 are in sliding fit and can reciprocate up and down in the rear wheel mounting frame locking hole 632, a rear wheel connecting column limiting hole 831 and a rear wheel connecting column displacement hole 832 are respectively arranged on the rear wheel connecting column 83 from bottom to top, and the rear wheel connecting member 8 further comprises a rear wheel fixing pin 84, and a rear wheel fixing pin locking pin 841 is arranged on the rear wheel fixing pin 84; wherein when the rack component 1 is in a low position, the rear wheel connecting column limiting hole 831 is arranged corresponding to the rear wheel mounting frame locking hole 632, and the rear wheel fixing pin 84 passes through the rear wheel mounting frame locking hole 632 and the rear wheel connecting column limiting hole 831 in sequence, the rear wheel fixing pin 84 can be fixedly connected with the rear wheel mounting frame fitting sleeve 63 and the rear wheel connecting column 83 through the rear wheel fixing pin locking pin 841, so as to realize the fixed connection between the rear wheel mounting frame 6, the rear wheel 7 and the rear wheel connecting member 8; when the rack component 1 is in a high position, the rear wheel 7 and the rear wheel connecting member 8 move upward, the rear wheel connecting column displacement hole 832 is arranged corresponding to the rear wheel mounting frame locking hole 632, and the rear wheel fixing pin 84 passes through the rear wheel mounting frame locking hole 632 and the rear wheel connecting column displacement hole 832 in sequence, and the rear wheel fixing pin 84 can be fixedly connected with the rear wheel mounting frame fitting sleeve 63 and the rear wheel connecting column 83 through the rear wheel fixing pin locking pin 841, so as to realize the fixed connection between the rear wheel mounting frame 6, the rear wheel 7 and the rear wheel connecting member 8.

[0034] It should be noted that by arranging the rear wheel connecting column 83 with two hole positions on the rear wheel connecting member 8, cooperating with the rear wheel mounting frame locking hole 632 of the rear wheel mounting frame fitting sleeve 63 on the rear wheel mounting frame 6, and adjusting the vertical direction height through the hole position pin shaft connection, the adjustment distance is the center distance of the two hole positions of the rear wheel connecting column limiting hole 831 and the rear wheel connecting column displacement hole 832 on the rear wheel connecting column 83, so as to complete the height adjustment of the whole horizontal jack by cooperating with the adjustment of the front wheel. Of course, the number of holes of the rear wheel connecting column 83 is not limited, and the number of holes can be increased according to actual needs during production, so that the rear wheel connecting member 8 can be fixed at multiple preset positions at the rear of the wallboard 11 and cooperate with the movement of the front wheel frame 4, which is within the protection scope of the utility model.

[0035] In the embodiment, the rear wheel 7 and the rear wheel connecting member 8 are combined to form a universal wheel assembly, and the universal wheel structure is arranged to realize convenient adjustment of the ground clearance of the jack and ensure the flexibility of the overall movement of the horizontal hydraulic jack.

[0036] Preferably, a wall plate handle 113 is also installed on the outer side surface of each of the two wall plates 11.

[0037] Further, a lifting bracket 9 is installed on the end of the length direction of the lifting arm 2 away from the length direction, and the lifting bracket 9 is used to lift the heavy object.

[0038] Please see Figure 1 With Figure 2 And focus on Figure 3The utility model discloses a horizontal hydraulic jack, which is characterized by comprising a base 1, a lifting arm 2, a lifting bracket 9, a hydraulic cylinder part, a hand press 3 and a control valve 4, wherein the lifting arm 2 is arranged on the base 1, the lifting bracket 9 is arranged on the lifting arm 2, the hydraulic cylinder part is arranged on the base 1, the hand press 3 is arranged on the base 1, and the control valve 4 is arranged on the base 1 and connected with the hydraulic cylinder part.When the height adjustment of the rack component 1 is needed, if the rack component 1 is in the low position, since the length direction of the front wheel frame mounting plate 42 is parallel to the wall plate 11 at this time, the front wheel frame positioning support shaft 43 can pass through the front wheel frame mounting plate fixing hole 422 and the wall plate front limiting hole 111 and enter the wall plate front limiting hole shaft sleeve 1111 to fix the front wheel frame 4. The front wheel frame positioning support shaft fixing pin 431 in the front wheel frame positioning support shaft 43 can ensure the fixation of the front wheel frame 4 and the wall plate 11 without loosening. The rear wheel connecting column limiting hole 831 is arranged corresponding to the rear wheel mounting frame locking hole 632, and the rear wheel fixing pin shaft 84 passes through the rear wheel mounting frame locking hole 632 and the rear wheel connecting column limiting hole 831 in turn, and the rear wheel fixing pin shaft locking pin 841 is used to realize the fixed connection between the rear wheel mounting frame 6, the rear wheel 7 and the rear wheel connecting member 8. At this time, the user can take out the front wheel frame positioning support shaft fixing pin 431 and pull out the front wheel frame positioning support shaft 43 from the front wheel frame 4 and the wall plate 11, lift the rack component 1 of the horizontal hydraulic jack and the front half of the lifting arm 2, make the front wheel frame 4 rotate around the wall plate front hinge shaft 12, and make the front wheel frame mounting plate fixing hole 422 on the front wheel frame 4 coincide with the wall plate front displacement hole 112 on the two wall plates 11. Then the front wheel frame positioning support shaft 43 is inserted into the front wheel frame mounting plate fixing hole 422 and the two wall plate front displacement holes 112 and matched with the front wheel frame positioning support shaft fixing pin 431 to realize the fixation and matching. At this time, the two front wheels 5 move downward relative to the rack component 1 and can be supported on the ground, so that the front part of the rack component 1 is lifted up. Then the user can pull out the rear wheel fixing pin shaft locking pin 841 and pull out the rear wheel fixing pin shaft 84 from the rear wheel connecting member 8 and the rear wheel mounting frame 6, and move the two rear wheels 7 together with the rear wheel connecting member 8 downward. The user then adjusts the position of the rear wheel connecting column 83 on the rear wheel connecting member 8, so that the rear wheel connecting column displacement hole 832 coincides with the rear wheel mounting frame locking hole 632 on the rear wheel mounting frame 6. Then the rear wheel fixing pin shaft 84 is inserted into the rear wheel mounting frame locking hole 632 and the rear wheel connecting column displacement hole 832 and matched with the rear wheel fixing pin shaft locking pin 841 to realize the fixation and matching. At this time, the two rear wheels 8 move downward relative to the rack component 1 and can be supported on the ground, so that the rear part of the rack component 1 is lifted up, thereby realizing the common lifting of the rack component 1, the lifting arm 2, the lifting bracket 9 and the handle 4 connected to the rack component 1, adjusting the height of the rack component 1 and the lifting arm 2 from the ground, so that the horizontal hydraulic jack can be used for lifting vehicles and mechanical equipment with different heights from the ground. The adjustment is simple and reliable. When the horizontal hydraulic jack needs to be adjusted from the high position to the low position, the above operation is reversed, which is simple and reliable.

[0039] It should be noted that the above embodiments can be freely combined as needed. The above are only preferred embodiments of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which improvements and refinements should also be considered within the scope of the present application.

[0040] In summary, the technical scheme provided by the present application remedies the shortcomings in the prior art, successfully completes the task of the present application, and faithfully realizes the technical effects described by the applicant in the technical effect column above.

Claims

1. A horizontal hydraulic jack with easily adjustable height, comprising: The frame component (1) has two parallel, spaced-apart wall panels (11) connected together; a lifting arm (2) is mounted on the frame component (1) and hinged to the two wall panels (11); a handrail (3) is capable of driving the lifting arm (2) to move via a hydraulic assembly; characterized in that it further includes: a front wheel frame (4) rotatably connected to the front end of the frame component (1), and the front wheel frame (4) is rotatable relative to the frame component (1) and fixed to the two wall panels (11) at a preset position, and a pair of front wheels (5) are symmetrically mounted on the front wheel frame (4). A pair of rear wheel mounting brackets (6), the two rear wheel mounting brackets (6) are respectively fixedly installed at the rear end position of their respective corresponding wall panels (11); a pair of rear wheels (7), the two rear wheels (7) are respectively set below their respective corresponding rear wheel mounting brackets (6), and a rear wheel connecting member (8) is installed on each of the rear wheels (7). The rear wheel connecting member (8) is installed together with the rear wheel mounting bracket (6), and the rear wheel connecting member (8) can move up and down relative to the rear wheel mounting bracket (6) and be fixedly connected to the rear wheel mounting bracket (6) at a preset position, thereby achieving the adjustment of the relative position of the rear wheel (7) and the frame component (1).

2. The horizontal hydraulic jack with easily adjustable height according to claim 1, characterized in that: The front wheel frame (4) is a frame structure with a "П" shape, and the front wheel frame (4) has a front wheel frame transverse plate (41) and two front wheel frame mounting plates (42) formed at both ends of the front wheel frame transverse plate (41) in the length direction. The two front wheel frame mounting plates (42) are perpendicular to the front wheel frame transverse plate (41). The two front wheel frame mounting plates (42) are respectively attached to the outer surface of their respective wall panels (11), and the frame component (1) also includes a wall panel front hinge shaft (12) passing through the two wall panels (11). 2) The two ends of the front wheel frame extend through the wall panels (11) on both sides and are connected to the corresponding front wheel frame mounting plates (42). Each of the two front wheel frame mounting plates (42) is also equipped with a front wheel frame mounting plate hinge bolt (421). The two front wheel frame mounting plate hinge bolts (421) are respectively installed at the two ends of the wall panel front hinge shaft (12) extending through the wall panel (11) in the length direction, thereby realizing the rotational connection between the two front wheel frame mounting plates (42) and their corresponding wall panels (11), so that the front wheel frame (4) is hinged to the frame component (1).

3. A horizontal hydraulic jack with easily adjustable height according to claim 2, characterized in that: On both front wheel frame mounting plates (42) of the front wheel frame (4), a front wheel frame mounting plate fixing hole (422) is provided at the upper position corresponding to the middle of the length direction of the front wheel frame mounting plate (42). The front wheel frame mounting plate fixing hole (422) penetrates the thickness direction of the front wheel frame mounting plate (42). A wall plate front limiting hole (111) is also provided at the upper position of the front end of the wall plate (11) along the length direction of the front wheel frame (4). At the front end of the two wall plates (11) along the length direction and below the wall plate front limiting hole (111), a wall plate forward moving hole is also provided. A positioning hole (112) is provided; a wall panel front limiting hole bushing (1111) is connected between the two wall panels (11) at a position corresponding to the two wall panel front limiting holes (111), and a wall panel front shifting hole bushing (1121) is also connected between the two wall panels (11) at a position corresponding to the two wall panel front shifting holes (112), and a front wheel frame positioning support shaft (43) is also provided on the front wheel frame (4), and a front wheel frame positioning support shaft fixing pin (431) is also provided on the front wheel frame positioning support shaft (43); wherein, when the frame component (1) is in a low position, the front wheel frame The length direction of the mounting plate (42) is parallel to the length direction of the wall panel (11). The front wheel frame positioning support shaft (43) can pass through the two front wheel frame mounting plate fixing holes (422) and the front limit hole (111) of the wall panel and enter the bushing (1111) of the front limit hole of the wall panel. The front wheel frame positioning support shaft (43) can be fixed to the front wheel frame (4) and the two wall panels (11) by the front wheel frame positioning support shaft fixing pin (431), thereby realizing the fixed connection between the front wheel frame (4) and the wall panel (11). When the frame component (1) is in a high position, the front wheel frame (4) can The front wheel frame mounting plate fixing hole (422) can be rotated downward around the front hinge shaft (12) of the wall panel and the front wheel frame mounting plate fixing hole (422) can be moved to a position corresponding to the front displacement hole (112) of the wall panel. The front wheel frame positioning support shaft (43) can pass through the two front wheel frame mounting plate fixing holes (422) and the front displacement hole (112) of the wall panel and enter the bushing (1121) of the front displacement hole of the wall panel. The front wheel frame positioning support shaft (43) can be fixed to the front wheel frame (4) and the wall panel (11) by the front wheel frame positioning support shaft fixing pin (431), thereby realizing the fixed connection between the front wheel frame (4) and the wall panel (11) again.

4. A horizontal hydraulic jack with easily adjustable height according to claim 2, characterized in that: The two front wheels (5) are respectively set in a symmetrical manner on their respective front wheel frame mounting plates (42) near the lower front end of the front wheel frame transverse plate (41), with the bottom end of the front wheel (5) lower than the bottom end of the front wheel frame mounting plate (42); and a front wheel connecting shaft (51) is connected between the two front wheels (5), which passes through the two front wheel frame mounting plates (42) and is rotatably connected to them, so that the two front wheels (5) are rotatably connected to the front wheel frame (4).

5. A horizontal hydraulic jack with easily adjustable height according to claim 2, characterized in that: The front wheel frame transverse plate (41) and the two front wheel frame mounting plates (42) are integrally formed, that is, the front wheel frame (4) is integrally formed.

6. A horizontal hydraulic jack with easily adjustable height according to claim 2, characterized in that: The rear wheel mounting bracket (6) includes a rear wheel mounting bracket connecting plate (61) and a rear wheel mounting bracket positioning plate (62); wherein, the rear wheel mounting bracket connecting plate (61) is attached to the outer surface of the rear end of the wall panel (11) in the length direction, and the rear wheel mounting bracket connecting plate (61) is fixedly connected to the wall panel (11) body; the rear wheel mounting bracket positioning plate (62) is vertically positioned above the rear wheel mounting bracket connecting plate (61), and a rear wheel mounting bracket mating sleeve (63) is formed on the rear wheel mounting bracket positioning plate (62); a rear wheel mounting bracket mating cavity (631) is formed in the rear wheel mounting bracket mating sleeve (63) extending from its upper part to its lower part; and a rear wheel mounting bracket locking hole (632) is also provided on the body of the rear wheel mounting bracket mating sleeve (63).

7. A horizontal hydraulic jack with easily adjustable height according to claim 6, characterized in that: The rear wheel connecting component (8) includes a wheel frame (81), a rotating module (82) connected to the wheel frame (81), and a rear wheel connecting post (83) formed on the rotating module (82); wherein, the rear wheel (7) is installed in the wheel frame (81), and the rear wheel connecting post (83) extends upward in a vertical direction, the outer periphery of the rear wheel connecting post (83) is adapted to the cavity of the rear wheel mounting bracket mating cavity (631), and the rear wheel connecting post (83) and the rear wheel mounting bracket mating cavity (631) achieve... The rear wheel connecting member (8) is slidably fitted and can slide back and forth in the rear wheel mounting bracket cavity (631). A rear wheel connecting post limiting hole (831) and a rear wheel connecting post shifting hole (832) are respectively opened from bottom to top on the rear wheel connecting post (83). The rear wheel connecting member (8) also includes a rear wheel fixing pin (84), and a rear wheel fixing pin locking pin (841) is also provided on the rear wheel fixing pin (84). When the frame component (1) is in a low position, the rear wheel connecting post limiting hole (831) and the rear wheel mounting bracket cavity (631) are slidably fitted. The mounting bracket locking hole (632) is correspondingly provided, and the rear wheel fixing pin (84) passes through the rear wheel mounting bracket locking hole (632) and the rear wheel connecting column limiting hole (831) in sequence. The rear wheel fixing pin (84) can achieve a fixed connection with the rear wheel mounting bracket mating sleeve (63) and the rear wheel connecting column (83) through the rear wheel fixing pin locking pin (841), thereby realizing the fixed connection between the rear wheel mounting bracket (6), the rear wheel (7) and the rear wheel connecting component (8); and when the frame component (1) is in the high position, the The rear wheel connecting post displacement hole (832) is provided corresponding to the rear wheel mounting bracket locking hole (632), and the rear wheel fixing pin (84) passes through the rear wheel mounting bracket locking hole (632) and the rear wheel connecting post displacement hole (832) in sequence. Similarly, the rear wheel fixing pin (84) can achieve a fixed connection with the rear wheel mounting bracket mating sleeve (63) and the rear wheel connecting post (83) through the rear wheel fixing pin locking pin (841), thereby realizing a fixed connection between the rear wheel mounting bracket (6), the rear wheel (7) and the rear wheel connecting component (8).

8. A horizontal hydraulic jack with easily adjustable height according to claim 7, characterized in that: The rear wheel (7) and the rear wheel connecting member (8) are combined to form a caster wheel assembly.

9. A horizontal hydraulic jack with easily adjustable height according to claim 1, characterized in that: A wall panel handle (113) is also installed on the outer surface of each of the two wall panels (11).

10. A horizontal hydraulic jack with easily adjustable height according to claim 1, characterized in that: The lifting arm (2) is also equipped with a lifting bracket (9) at one end away from the length direction, which is used to lift heavy objects.

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