Electric hydraulic jack for carrying vehicle
By using steel ball connections and deep groove ball bearings on the electric pallet truck, the problems of loose screw connections and large space occupation are solved, thereby improving the stability and compactness of the equipment and making it more flexible for operation in narrow spaces.
Patent Information
- Application Number
- CN202520287408.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-22
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-02-22
AI Technical Summary
The existing electric pallet trucks mostly use screw connections to connect the cylinders and the drive system, which poses a risk of loosening and occupies a lot of space, affecting the reliability and compactness of the equipment.
The steel ball connection method replaces the traditional screw connection to ensure the stability between the hydraulic cylinder and the drive, and the deep groove ball bearing and needle roller bearing provide support, reducing space occupation.
It improves the reliability and safety of the equipment, enhances space utilization efficiency, increases flexibility for operation in confined spaces, and improves the compactness and safety of the entire vehicle.
Smart Images
Figure CN223688023U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to jack technical field more specifically relates to a kind of electric hydraulic jack for carrier. BACKGROUND
[0002] At present, the oil cylinder and drive connection mode of electric pallet truck mostly adopts screw connection, this traditional connection mode has many disadvantages: on the one hand, screw fixing has the risk of loosening, in the long-term use process of carrier, under the action of external force such as vibration, jolt, screw is prone to loosening, and then affect the normal operation of equipment, even possibly lead to safety hazard;On the other hand, screw fixing occupies larger space, which is extremely unfavorable for modern carrier which pursues compact design, limits the optimization of the overall structure of equipment, and cannot meet the growing requirements of space utilization efficiency and compactness of carrier. SUMMARY
[0003] Therefore, the utility model provides a kind of electric hydraulic jack for carrier, can solve the problem of screw connection between the oil cylinder and drive, such as easy loosening, large space occupation, improve the reliability and safety of jack, enhance market competitiveness.
[0004] To achieve the above object, the utility model provides an electric hydraulic jack for carrier, including base assembly and the lifting cylinder assembly assembled on base assembly, the base assembly includes cylinder block seat and deep groove ball bearing, the deep groove ball bearing is installed in the bearing hole in the bottom of cylinder block seat, the bottom of cylinder block seat is equipped with the hole for installing steel ball two, steel ball two is installed in the corresponding hole in the bottom of cylinder block seat, the inner side wall of cylinder block seat is equipped with needle roller bearing, the lifting cylinder assembly includes piston cylinder and lifting piston installed in piston cylinder, the outer wall on the top end of lifting piston is equipped with threaded hole for installing combined washer and hydraulic connector, combined washer and hydraulic connector are installed in the corresponding threaded hole on lifting piston, the corresponding groove for installing steel ball one is equipped between cylinder block seat and piston cylinder, a plurality of steel ball one is arranged around in the groove.
[0005] Preferably, the outer wall of piston cylinder close to bottom end is equipped with skeleton oil seal, and the skeleton oil seal is used to seal the gap between piston cylinder and cylinder block seat.
[0006] Preferably, a plurality of threaded holes penetrating the side wall of cylinder block seat are arranged at the groove between cylinder block seat and piston cylinder, and internal hexagon screw is screwed in the threaded hole, and the internal hexagon screw is used to fasten steel ball one in the groove.
[0007] Preferably, needle roller bearing and deep groove ball bearing are located between piston cylinder and cylinder block seat, and both support lifting cylinder assembly.
[0008] Preferably, the inner wall of the piston cylinder is provided with grooves for mounting the dustproof sealing ring, the guide ring and the sealing ring, and the dustproof sealing ring, the guide ring and the sealing ring are respectively mounted in the corresponding grooves on the inner wall of the piston cylinder.
[0009] Preferably, the dustproof sealing ring cooperates with the lifting piston to prevent dust from entering the interior of the piston cylinder.
[0010] Preferably, the guide ring guides and supports the lifting piston to reciprocate in the interior of the piston cylinder.
[0011] Preferably, the sealing ring cooperates with the lifting piston to seal the reciprocating movement of the lifting piston.
[0012] Compared with the prior art, the electric hydraulic jack for the carrier vehicle provided by the utility model adopts a steel ball connecting mode between the base assembly and the lifting cylinder assembly, compared with the traditional screw connecting mode, the problem of screw loosening is fundamentally eliminated, the stability of the electric hydraulic jack connection during the use of the carrier vehicle is greatly improved, the equipment failure risk caused by the connection loosening is reduced, and the safety and reliability of the equipment operation are ensured; meanwhile, the steel ball connecting mode effectively reduces the size of the oil cylinder, saves more space for other components in the overall structure design of the carrier vehicle, improves the space utilization efficiency, enables the carrier vehicle to realize more efficient operation in limited space, significantly improves the compactness of the whole vehicle, and makes the carrier vehicle more simple and reasonable in appearance and structure, more flexible and convenient during operation in narrow space, and better adapt to different working environments and operation requirements. BRIEF DESCRIPTION OF DRAWINGS
[0013] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only the embodiments of the utility model, and those skilled in the art can obtain other drawings according to the provided drawings without creating creative labor.
[0014] Figure 1 It is the overall structure diagram of the electric hydraulic jack of the utility model;
[0015] Figure 2 It is the structure explosion diagram of the electric hydraulic jack of the utility model;
[0016] Figure 3 It is the partial enlarged view of the cylinder body seat of the utility model.
[0017] Explanation of reference signs: 1 - skeleton oil seal, 2 - needle bearing, 3 - steel ball one, 4 - deep groove ball bearing, 5 - steel ball two, 6 - cylinder seat, 7 - inner hexagonal screw, 8 - combined gasket, 9 - hydraulic connector, 10 - lifting piston, 11 - dustproof sealing ring, 12 - guide ring, 13 - sealing ring, 14 - piston cylinder. DETAILED DESCRIPTION
[0018] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. The description of one exemplary embodiment is only illustrative, rather than any limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.
[0019] Please refer to the drawings Figures 1-3 The utility model discloses a electric hydraulic jack for carrying vehicle.
[0020] The utility model provides a electric hydraulic jack for carrying vehicle, including base assembly and lifting cylinder subassembly, lifting cylinder subassembly is assembled on the base assembly.
[0021] The base assembly includes a cylinder seat 6 and a deep groove ball bearing 4. The deep groove ball bearing 4 is installed in the bearing hole at the bottom of the cylinder seat 6. The bottom of the cylinder seat 6 is provided with a hole for installing the steel ball two 5. The steel ball two 5 is installed in the corresponding hole at the bottom of the cylinder seat 6. The needle bearing 2 is installed on the inner side wall of the cylinder seat 6, i.e. at the B surface in the figure. Figure 2
[0022] The lifting cylinder subassembly includes a piston cylinder 14 and a lifting piston 10. The dustproof sealing ring 11, the guide ring 12 and the sealing ring 13 are respectively installed in the corresponding grooves on the inner wall of the cylinder barrel of the piston cylinder 14. The lifting piston 10 is installed on the inner side of the cylinder barrel of the piston cylinder 14. The outer wall of the lifting piston 10 near the top end is provided with threaded holes for installing the combined gasket 8 and the hydraulic connector 9. The combined gasket 8 and the hydraulic connector 9 are respectively installed in the corresponding threaded holes on the lifting piston 10.
[0023] Preferably, the guide ring 12 is provided with three, and the sealing ring 13 is provided with two. The guide ring 12 and the sealing ring 13 are arranged in the structure of guide ring 12-sealing ring 13-sealing ring 13-guide ring 12-guide ring 12, so as to achieve better guiding and supporting and reciprocating sealing effects.
[0024] The outer wall of the piston cylinder 14 near the bottom end is provided with a skeleton oil seal 1. The skeleton oil seal 1 is assembled on the outer side of the bottom end of the piston cylinder 14, i.e. at the A surface in the figure. Figure 2 A face in the middle of the gap between the piston cylinder 14 and the cylinder seat 6, the assembly of the lifting cylinder assembly and the base assembly, the steel ball one 3 through the C hole (as shown in Figure 2 The middle) on the cylinder seat 6 is assembled in the corresponding groove at the joint of the lifting cylinder assembly and the base assembly, so that the steel ball one 3 is arranged in a circle around the groove, and the groove on the cylinder seat 6 where the steel ball one 3 is installed is provided with a plurality of threaded holes penetrating the side wall of the cylinder seat 6, and the internal hexagonal screw 7 is installed in the corresponding threaded hole of the cylinder seat 6 and is fastened by screwing.
[0025] The working principle of the electric hydraulic jack of the utility model is:
[0026] The inner wall of the piston cylinder 14 is provided with grooves for installing the dustproof sealing ring 11, the guide ring 12 and the sealing ring 13, and the dustproof sealing ring 11, the guide ring 12 and the sealing ring 13 are respectively installed in the corresponding grooves on the inner wall of the piston cylinder 14. The dustproof sealing ring 11 cooperates with the lifting piston 10 to seal the inside of the piston cylinder 14, preventing water, dust and other impurities from entering. The guide ring 12 guides and supports the lifting piston 10, ensuring smooth reciprocating movement of the lifting piston 10 in the piston cylinder 14. The sealing ring 13 cooperates with the lifting piston 10 to reciprocally seal the lifting piston 10, ensuring that the hydraulic oil in the piston cylinder 14 does not leak.
[0027] The hydraulic joint 9 is connected with the oil pipe, the combined gasket 8 seals the joint surface, and the external hydraulic oil pressure is transmitted to the inside of the oil cavity of the piston cylinder 14 through the oil channel inside the lifting piston 10, which is used to drive the lifting piston 10 to reciprocate.
[0028] The skeleton oil seal 1 cooperates with the A face on the piston cylinder 14 to seal, preventing water and dust from entering the inside of the cylinder seat, thereby preventing the problem of poor rotation of the needle bearing 2, the steel ball one 3 and the deep groove ball bearing 4.
[0029] The needle bearing 2 and the deep groove ball bearing 4 are located between the piston cylinder 14 and the cylinder seat 6, supporting the lifting cylinder assembly and ensuring smooth rotation of the lifting cylinder assembly.
[0030] The steel ball one 3 is located in the groove between the piston cylinder 14 and the cylinder seat 6; the cylinder seat 6 assists in supporting the piston cylinder 14 and limits the radial position of the lifting cylinder assembly, ensuring that the lifting cylinder assembly and the base assembly are not separated; and the internal hexagonal screw 7 ensures that the steel ball one 3 does not fall out of the groove and that the grease in the groove does not leak.
[0031] It should be noted that all the directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative positional relationship, movement condition and the like between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.
[0032] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixing" and the like should be understood in a broad sense, for example, "fixing" can be fixed connection, or detachable connection, or integrated; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium; can be internal communication of two elements or interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0033] In addition, if the present application involves "first", "second" and the like in the description, the "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with "first", "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. For example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection required by the present application.
[0034] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. An electric hydraulic jack for a dolly, characterized by comprising: The base assembly and the lifting cylinder assembly assembled on the base assembly, the base assembly includes cylinder seat (6) and deep groove ball bearing (4), the deep groove ball bearing (4) is installed in the bearing hole in the bottom of the cylinder seat (6), the bottom of the cylinder seat (6) is provided with a hole for installing steel ball two (5), the steel ball two (5) is installed in the corresponding hole in the bottom of the cylinder seat (6), the inner side wall of the cylinder seat (6) is provided with a needle bearing (2), the lifting cylinder assembly includes a piston cylinder (14) and a lifting piston (10) installed in the piston cylinder (14), the outer wall of the lifting piston (10) near the top end is provided with a threaded hole for installing a combined gasket (8) and a hydraulic connector (9), the combined gasket (8) and the hydraulic connector (9) are respectively installed in the corresponding threaded hole of the lifting piston (10), the cylinder seat (6) and the piston cylinder (14) are provided with corresponding grooves for installing steel ball one (3), and a plurality of steel ball one (3) is arranged around the groove.
2. The electric hydraulic jack for a truck as set forth in claim 1, characterized by The outer wall of the piston cylinder (14) near the bottom end is provided with a skeleton oil seal (1), and the skeleton oil seal (1) is used for sealing the gap between the piston cylinder (14) and the cylinder seat (6).
3. The electric hydraulic jack for a truck as set forth in claim 1, wherein The groove between the cylinder seat (6) and the piston cylinder (14) is provided with a plurality of threaded holes penetrating the side wall of the cylinder seat (6), and a hexagonal socket screw (7) is screwed in the threaded hole, and the hexagonal socket screw (7) is used for fastening the steel ball one (3) in the groove.
4. The electric hydraulic jack for a truck as set forth in claim 1, wherein The needle bearing (2) and the deep groove ball bearing (4) are located between the piston cylinder (14) and the cylinder seat (6), and all support the lifting cylinder assembly.
5. The electric hydraulic jack for a truck as set forth in claim 1, wherein The inner wall of the piston cylinder (14) is provided with a groove for installing a dustproof sealing ring (11), a guide ring (12) and a sealing ring (13), and the dustproof sealing ring (11), the guide ring (12) and the sealing ring (13) are respectively installed in the corresponding groove in the inner wall of the piston cylinder (14).
6. The electric hydraulic jack for a truck as set forth in claim 5, wherein The dustproof sealing ring (11) cooperates with the lifting piston (10) to prevent dust from entering the interior of the piston cylinder (14).
7. The electric hydraulic jack for a truck as set forth in claim 5, wherein The guide ring (12) guides and supports the lifting piston (10) to reciprocate in the piston cylinder (14).
8. The electric hydraulic jack for a truck as set forth in claim 5, wherein The sealing ring (13) cooperates with the lifting piston (10) to seal the reciprocating movement of the lifting piston (10).