Portable electric hydraulic jack

Abstract

The utility model relates to the technical field of electric hydraulic jacks, in particular to a portable electric hydraulic jack, which is applied to a walking wheel bearing shaft of large mobile equipment, comprises a cart, and is characterized by further comprising a main shaft dismounting mechanism, a supporting mechanism, an adjusting mechanism and a shaft connecting mechanism, and the trolley is provided with a main shaft dismounting mechanism used for pushing and dismounting the walking wheel bearing of the mobile equipment. The main shaft dismounting mechanism is driven by the supporting mechanism to perform height adjustment, the main shaft dismounting mechanism is aligned with a walking wheel bearing shaft of the large-scale mobile equipment, the main shaft dismounting mechanism and the walking wheel bearing shaft are limited together, the jack main body is started, the jack main body can stably eject a shaft body, and the problem that on the large-scale equipment, the main shaft dismounting mechanism is not prone to being damaged is solved. The technical problems that the operation space of a puller is limited, butt joint is troublesome, and time and labor are wasted when a bearing shaft of the walking wheel is disassembled are solved.

Description

Technical Field

[0001] This utility model relates to the field of electric hydraulic jack technology, specifically to a portable electric hydraulic jack. Background Technology

[0002] Portable electric hydraulic jacks are primarily used to lift or lower heavy objects by electrically driving a hydraulic system. They are commonly used in automotive repair, equipment lifting, and other heavy-duty handling applications. Electric hydraulic jacks are frequently used in automotive repair, especially for tasks such as tire changes, brake repairs, and chassis inspections. Because they are electrically driven, users can easily lift vehicles, avoiding the significant physical effort required when using traditional manual jacks.

[0003] Most hydraulic jacks on the market are manual and are mainly used for vertical lifting. When disassembling the bearing shaft of the traveling wheel of a large mobile device, workers usually need to use a hydraulic jack or other lifting tools to raise the equipment so that the traveling wheel can easily contact the ground. Then, they use tools such as pullers to disassemble the wheel shaft and separate the bearing shaft from the traveling wheel. Since the puller needs to be precisely placed on the part to be disassembled, and the operating space of the puller is limited on large equipment, it is relatively troublesome to connect. Disassembling the bearing shaft of the traveling wheel of a large mobile device is time-consuming and laborious. Therefore, we have proposed a portable electric hydraulic jack. Utility Model Content

[0004] To address the aforementioned issues, a portable electric hydraulic jack is provided. Through a support mechanism, the main shaft disassembly mechanism is driven to adjust its height, aligning it with the bearing shaft of the traveling wheel of the large mobile equipment and limiting its position with the bearing seat fixing hole. Activating the jack body allows it to stably push the shaft out, thus solving the technical problems of limited operating space for pullers, cumbersome docking, and time-consuming and labor-intensive disassembly of the traveling wheel bearing shaft on large equipment.

[0005] To address the problems of existing technologies, this utility model provides a portable electric hydraulic jack for use on the bearing shaft of the traveling wheel of a large mobile device. The jack includes a trolley and is characterized by further comprising a main shaft disassembly mechanism, a support mechanism, an adjustment mechanism, and a shaft connection mechanism. The trolley is equipped with a main shaft disassembly mechanism for pushing and disassembling the traveling wheel bearing of the mobile device. The main shaft disassembly mechanism is equipped with a support mechanism for adjusting the distance between the main shaft disassembly mechanism and the traveling wheel bearing shaft. The support mechanism is equipped with an adjustment mechanism for aligning the main shaft disassembly mechanism with the bearing seat fixing hole of the main shaft to be disassembled. The trolley is also equipped with a shaft connection mechanism for placing the bearing shaft.

[0006] Preferably, the main shaft disassembly mechanism includes a mobile power supply, a hydraulic pump, a jack body, and a first screw; the mobile power supply and the hydraulic pump are sequentially mounted on the trolley; the jack body is mounted on the side of the trolley closest to the hydraulic pump; and the first screw is mounted on the outside of the jack body.

[0007] Preferably, the support mechanism includes a bracket, a support plate, a displacement mechanism, and a transmission mechanism; the bracket is located between the hydraulic pump and the jack body, and is connected to the trolley; the support plate is located on the outside of the trolley; the displacement mechanism is located on the bracket and is used to cooperate with the jack body to move linearly; the transmission mechanism is also located on the bracket and is used to drive the displacement mechanism to move the support plate linearly.

[0008] Preferably, the displacement mechanism includes a first sliding plate, a first sliding groove, and a second screw; the first sliding plate is connected to one side of the support plate; the first sliding groove is opened on the side of the bracket near the first sliding plate, and the first sliding groove is used to cooperate with the first sliding plate for linear movement; the second screw is rotatably disposed in the first sliding groove, and the second screw is threadedly connected to the first sliding plate.

[0009] Preferably, the transmission mechanism includes a synchronization component and a power component; the synchronization component is rotatably mounted on the bracket, and the working ends on both sides of the synchronization component are connected to the second screw; the power component is mounted on the bracket, and the working end of the power component is connected to the working end in the middle of the synchronization component.

[0010] Preferably, the adjusting mechanism includes a second slider, a second slide groove, a third screw, and a handwheel; the second slider is disposed within the support plate; the second slide groove is formed on the side of the support plate near the second slider, and the second slide groove is used to cooperate with the second slider for linear movement; the third screw is rotatably disposed within the second slide groove, and the third screw is threadedly connected to the second slider; the handwheel is rotatably disposed on the support plate, and the handwheel is connected to the third screw.

[0011] Preferably, the adjustment mechanism further includes a guide mechanism for linear movement in cooperation with the first screw. The guide mechanism includes a support block and a third slide groove. The support block is connected to the second slider. The third slide groove is located on the side of the support plate near the support block and is used to move linearly in cooperation with the support block.

[0012] Preferably, the shaft connection mechanism includes a telescopic component and an arc-shaped plate; the telescopic component is mounted on a trolley; the working end of the telescopic component is connected to the outer side of the arc-shaped plate.

[0013] The advantages of this utility model compared to the prior art are:

[0014] 1. The main shaft disassembly mechanism is height-adjusted by a support mechanism to align with the traveling wheel bearing shaft of the large mobile equipment, and the main shaft disassembly mechanism and the traveling wheel bearing shaft are restricted together. The jack body is then activated, allowing the jack body to stably push the shaft out. This solves the technical problems of limited operating space for pullers, complicated docking, and time-consuming and labor-intensive disassembly of traveling wheel bearing shafts on large equipment.

[0015] 2. The distance between the two first screws is adjusted by an adjustment mechanism, and the first screws can be replaced according to the size of the traveling wheel bearing. This makes it easy for the portable electric hydraulic jack to disassemble the shafts of different traveling wheel bearings, solving the technical problem that the portable electric hydraulic jack is not convenient for disassembling the shafts of traveling wheel bearings of different sizes. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the trolley and main body of the portable electric hydraulic jack, as well as its connecting structure.

[0017] Figure 2 This is a three-dimensional schematic diagram of the hydraulic pump, the main body of the portable electric hydraulic jack, and its connecting structure.

[0018] Figure 3 This is a three-dimensional schematic diagram of the support plate and the first sliding plate of a portable electric hydraulic jack and their connecting structure.

[0019] Figure 4 This is a three-dimensional schematic diagram of the synchronization components, power components, and connection structure of a portable electric hydraulic jack.

[0020] Figure 5 It is a portable electric hydraulic jack. Figure 1 Enlarged diagram of point A in the middle.

[0021] Figure 6 It is a portable electric hydraulic jack. Figure 2 Enlarged diagram of point B in the middle.

[0022] Figure 7 It is a portable electric hydraulic jack. Figure 3 Enlarged diagram of point C in the middle.

[0023] Figure 8 It is a portable electric hydraulic jack. Figure 4 Enlarged diagram of point D in the middle.

[0024] The following components are labeled in the diagram: 1. Cart; 11. Power bank; 12. Hydraulic pump; 13. Jack body; 14. First screw; 2. Bracket; 21. Support plate; 22. First sliding plate; 23. First slide groove; 24. Second screw; 25. Synchronization component; 26. Power component; 27. Second slider; 28. Second slide groove; 29. ​​Third screw; 210. Handwheel; 211. Support block; 212. Third slide groove; 213. Telescopic component; 214. Curved plate. Detailed Implementation

[0025] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0026] See Figures 1-2 As shown, a portable electric hydraulic jack, applied to the bearing shaft of the traveling wheel of a large mobile device, includes a trolley 1. The portable electric hydraulic jack further includes a main shaft disassembly mechanism, a support mechanism, an adjustment mechanism, and a shaft connection mechanism. The trolley 1 is equipped with a main shaft disassembly mechanism for pushing and disassembling the traveling wheel bearing of the mobile device. The main shaft disassembly mechanism is equipped with a support mechanism for adjusting the distance between the main shaft disassembly mechanism and the traveling wheel bearing shaft. The support mechanism is equipped with an adjustment mechanism for aligning the main shaft disassembly mechanism with the bearing seat fixing hole of the main shaft to be disassembled. The trolley 1 is also equipped with a shaft connection mechanism for placing the bearing shaft.

[0027] Specifically, during the operation of the portable electric hydraulic jack, the relative position between the main shaft disassembly mechanism and the traveling wheel bearing shaft is first adjusted using the support mechanism to ensure that the axis of the main shaft disassembly mechanism and the axis of the traveling wheel bearing shaft are coaxial. Then, the position of the main shaft disassembly mechanism is further fine-tuned using the adjustment mechanism to precisely align the main shaft disassembly mechanism with the bearing seat fixing hole. After completing the above alignment operation, the main shaft disassembly mechanism and the traveling wheel bearing shaft are reliably connected.

[0028] Next, the shaft-connecting mechanism is activated to bring it and the shaft to the same horizontal plane. Then, the main shaft disassembly mechanism is activated, and the force generated by the hydraulic system smoothly pushes the shaft out of the traveling wheel bearing. During the process of the shaft being pushed out, the shaft-connecting mechanism simultaneously supports the pushed-out shaft, ensuring that the shaft can land safely and stably on the shaft-connecting mechanism.

[0029] See Figures 1-4 , Figure 7 and Figure 8As shown, the main shaft disassembly mechanism includes a mobile power supply 11, a hydraulic pump 12, a jack body 13, and a first screw 14; the mobile power supply 11 and the hydraulic pump 12 are sequentially mounted on the trolley 1; the jack body 13 is mounted on the side of the trolley 1 near the hydraulic pump 12; the first screw 14 is mounted on the outside of the jack body 13; the support mechanism includes a bracket 2, a support plate 21, a displacement mechanism, and a transmission mechanism; the bracket 2 is positioned between the hydraulic pump 12 and the jack body 13, and is connected to the trolley 1; the support plate 21 is mounted on the outside of the trolley 1; the displacement mechanism is mounted on the bracket 2 and is used to cooperate with the jack body 13 for linear movement; the transmission mechanism is also mounted on the bracket 2 and is used to drive the displacement mechanism to move the support plate 13. The plate 21 moves linearly; the displacement mechanism includes a first sliding plate 22, a first sliding groove 23, and a second screw 24; the first sliding plate 22 is connected to one side of the support plate 21; the first sliding groove 23 is opened on the side of the bracket 2 near the first sliding plate 22, and the first sliding groove 23 is used to cooperate with the first sliding plate 22 to move linearly; the second screw 24 is rotatably disposed in the first sliding groove 23, and the second screw 24 is threadedly connected to the first sliding plate 22; the transmission mechanism includes a synchronization component 25 and a power component 26; the synchronization component 25 is rotatably disposed on the bracket 2, and the working ends on both sides of the synchronization component 25 are connected to the second screw 24; the power component 26 is disposed on the bracket 2, and the working end of the power component 26 is connected to the working end in the middle of the synchronization component 25.

[0030] Specifically, the first slide plate 22 and the first slide groove 23 are matched with each other. The synchronization assembly 25 consists of three synchronization pulleys and a synchronization belt, and the synchronization pulleys and the synchronization belt are connected by meshing to achieve transmission. The power component 26 uses an electric motor as the drive element.

[0031] When the portable electric hydraulic jack is in operation, the power unit 26 is activated, and the working end of the power unit 26 drives the synchronous pulley in the middle of the synchronization assembly 25 to rotate. Since the three synchronous pulleys of the synchronization assembly 25 are meshed through the synchronous belt, the synchronous pulleys at both ends of the synchronization assembly 25 drive the second screw 24 to rotate. Based on the matching design of the first slide plate 22 and the first slide groove 23, the first slide plate 22 does not rotate with the second screw 24, but the first slide plate 22 can move stably in a straight line along the first slide groove 23 through the threaded connection with the second screw 24. Finally, the first slide plate 22 drives the jack body 13 to move through the support plate 21, realizing the height adjustment of the jack body 13, so that the operator does not need to manually support the jack body 13 to align with the bearing shaft of the traveling wheel of the large mobile equipment.

[0032] See Figures 1-6As shown, the adjustment mechanism includes a second slider 27, a second slide groove 28, a third screw 29, and a handwheel 210. The second slider 27 is disposed within the support plate 21. The second slide groove 28 is formed on the side of the support plate 21 near the second slider 27 and is used to cooperate with the second slider 27 for linear movement. The third screw 29 is rotatably disposed within the second slide groove 28 and is threadedly connected to the second slider 27. The handwheel 210 is rotatably disposed on the support plate 21 and is connected to the third screw 29. The adjustment mechanism also includes a guide mechanism, which is used to cooperate with the first screw 14 to move linearly. The guide mechanism includes a support block 211 and a third slide groove 212. The support block 211 is connected to the second slider 27. The third slide groove 212 is opened on the side of the support plate 21 near the support block 211 and is used to cooperate with the support block 211 to move linearly. The shaft connection mechanism includes a telescopic member 213 and an arc plate 214. The telescopic member 213 is set on the trolley 1. The working end of the telescopic member 213 is connected to the outer side of the arc plate 214.

[0033] Specifically, the second slider 27 matches the second slide groove 28. The support block 211 matches the third slide groove 212. The threads at both ends of the third screw 29 are in opposite directions. The telescopic component 213 uses a cylinder as the implementing element. The first screw 14 is connected to the support block 211 via a nut.

[0034] Once the jack body 13 is aligned with the traveling wheel bearing shaft, rotate the handwheel 210 to drive the third screw 29 to rotate, which in turn matches the second slider 27 with the second slide groove 28. The support block 211 matches the third slide groove 212, preventing the support block 211 and the second slider 27 from rotating with the third screw 29. Since the threads at both ends of the third screw 29 are in opposite directions, and the second slider 27 and the third screw 29 are threadedly connected, the two second sliders 27 can move closer or further apart. This allows each second slider 27 to drive the support block 211 to move, which in turn drives the first screw 14 to move closer or further apart. This allows the first screw 14 to accommodate mounting holes for different sized wheel bearings, facilitating alignment with the bearing housing mounting holes. When the size of the first screw 14 is changed, the nut is removed, the new first screw 14 is inserted into the inside of the support block 211, and a matching nut is used to re-secure the new first screw 14 to the support block 211. The components are assembled together, making it easy to replace the first screw 14 according to the size of the traveling wheel bearing. At this time, the trolley 1 can be pushed, causing the trolley 1 to move the jack body 13 close to the shaft, so that the working end of the jack body 13 is in close contact with the shaft surface. At the same time, the first screw 14 passes through the bearing seat fixing hole and is connected to the bearing seat fixing hole by a nut. Then, the telescopic component 213 is activated, causing the working end of the telescopic component 213 to move the arc plate 214 upward, so that the inner side of the arc plate 214 is aligned with the lower side of the shaft. At this time, the mobile power supply 11 can provide power to the hydraulic pump 12, causing the hydraulic pump 12 to drive the working end of the jack body 13 to move outward, so that the jack body 13 can push the shaft out from the inner side of the traveling wheel bearing, so that the shaft falls into the upper side of the arc plate 214, making it easy for workers to disassemble the traveling wheel bearing shaft of large mobile equipment.

[0035] Working Principle: During the operation of the portable electric hydraulic jack, firstly, push the trolley 1 to move the hydraulic pump 12 and the jack body 13 together to the vicinity of the bearing shaft of the traveling wheel of the large mobile equipment. Start the power unit 26, which drives the second screw 24 to rotate via the synchronization component 25, causing the jack body 13 to move along a preset track until its axis is fully aligned with the bearing shaft of the traveling wheel. Then, rotate the handwheel 210 to drive the third screw 29 to rotate, causing the two second sliders 27 to drive the support blocks 211 to move in opposite directions or back-to-back through threaded transmission. Ensure that the first screw 14 is precisely aligned with the fixing holes of bearings of different specifications. Push the trolley 1 again to make the jack body 13 fully fit against the shaft surface, while ensuring that the first screw 14 is inserted into the fixing hole of the bearing seat, and reliably connected to the fixing hole of the bearing seat through the locking mechanism. After starting the jack body 13, the hydraulic system drives the lifting mechanism to smoothly push the shaft out from the inside of the bearing. After the shaft detaches from the bearing, it naturally falls onto the upper side of the arc-shaped plate 214, completing the shaft disassembly operation.

[0036] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A portable electric hydraulic jack, applied to the bearing shaft of the traveling wheel of a large mobile device, comprising a trolley (1), characterized in that, The portable electric hydraulic jack also includes a spindle disassembly mechanism, a support mechanism, an adjustment mechanism, and a shaft connection mechanism; The trolley (1) is equipped with a spindle disassembly mechanism for pushing and disassembling the bearings of the traveling wheels of the mobile device; The spindle disassembly mechanism is equipped with a support mechanism for adjusting the distance between the spindle disassembly mechanism and the traveling wheel bearing shaft; The support mechanism is equipped with an adjustment mechanism for aligning the spindle disassembly mechanism with the bearing seat fixing hole of the spindle to be disassembled; The trolley (1) is also equipped with a shaft connection mechanism for placing the bearing shaft.

2. The portable electric hydraulic jack according to claim 1, characterized in that, The main shaft disassembly mechanism includes a mobile power supply (11), a hydraulic pump (12), a jack body (13), and a first screw (14); A power bank (11) and a hydraulic pump (12) are sequentially mounted on a trolley (1); The main body of the jack (13) is located on the side of the trolley (1) near the hydraulic pump (12); The first screw (14) is located on the outside of the jack body (13).

3. The portable electric hydraulic jack according to claim 2, characterized in that, The support mechanism includes a bracket (2), a support plate (21), a displacement mechanism, and a transmission mechanism; The bracket (2) is positioned between the hydraulic pump (12) and the jack body (13), and the bracket (2) is connected to the trolley (1); The support plate (21) is located on the outside of the trolley (1); The displacement mechanism is mounted on the support (2) and is used to cooperate with the jack body (13) to move linearly. The transmission mechanism is also mounted on the bracket (2). The transmission mechanism is used to drive the displacement mechanism to move the support plate (21) in a straight line.

4. The portable electric hydraulic jack according to claim 3, characterized in that, The displacement mechanism includes a first sliding plate (22), a first sliding groove (23), and a second screw (24); The first sliding plate (22) is connected to one side of the support plate (21); The first slide groove (23) is provided on the side of the bracket (2) near the first slide plate (22), and the first slide groove (23) is used to cooperate with the first slide plate (22) to move in a straight line; The second screw (24) is rotatably disposed in the first slide groove (23), and the second screw (24) is threadedly connected to the first slide plate (22).

5. The portable electric hydraulic jack according to claim 3, characterized in that, The transmission mechanism includes a synchronization component (25) and a power component (26); The synchronization component (25) is rotatably mounted on the bracket (2), and the working ends on both sides of the synchronization component (25) are connected to the second screw (24); The power component (26) is mounted on the bracket (2), and the working end of the power component (26) is connected to the working end of the middle part of the synchronization component (25).

6. The portable electric hydraulic jack according to claim 1, characterized in that, The adjustment mechanism includes a second slider (27), a second slide groove (28), a third screw (29), and a handwheel (210); The second slider (27) is located inside the support plate (21); The second slide (28) is provided on the side of the support plate (21) near the second slider (27), and the second slide (28) is used to cooperate with the second slider (27) to move linearly; The third screw (29) is rotatably disposed in the second slide groove (28), and the third screw (29) is threadedly connected to the second slider (27); The handwheel (210) is rotatably mounted on the support plate (21) and is connected to the third screw (29).

7. The portable electric hydraulic jack according to claim 6, characterized in that, The adjustment mechanism also includes a guide mechanism, which is used to cooperate with the first screw (14) to move linearly. The guide mechanism includes a support block (211) and a third slide groove (212). The support block (211) is connected to the second slider (27), and the first screw (14) passes through the inside of the support block (211); The third slide (212) is located on the side of the support plate (21) near the support block (211), and the third slide (212) is used to cooperate with the support block (211) to move linearly.

8. The portable electric hydraulic jack according to claim 1, characterized in that, The shaft connection mechanism includes a telescopic component (213) and an arc-shaped plate (214); The telescopic component (213) is mounted on the trolley (1); The working end of the telescopic component (213) is connected to the outer side of the arc plate (214).

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