Heavy hydraulic jack with safe locking structure

Abstract

The utility model relates to a heavy-duty hydraulic jack with a safe locking structure, and aims to solve the problems that an existing heavy-duty hydraulic jack needs to enter a long-time load state in the using process, the oil return phenomenon easily occurs at the moment, even damage is caused, a piston rod in the heavy-duty hydraulic jack easily falls back, and the service life of the heavy-duty hydraulic jack is affected. The auxiliary structure comprises a base, a cylinder barrel is arranged at the middle end of the top of the base, a piston rod is arranged in the cylinder barrel, the height of a movable rod is adjusted through the rising height of the piston rod, and the movable rod is moved upwards till the top of the auxiliary structure is about to touch a top disc; rotation deviation of the movable rod can be reduced through cooperation of a limiting groove and a limiting block, then a bolt penetrates through a limiting barrel frame and a corresponding adjusting hole to limit the movable rod, then the auxiliary structure is adjusted to enable the top of the auxiliary structure to be tightly attached to the top disc, at the moment, the top disc can be locked, the piston rod is effectively prevented from falling back, and potential safety hazards are reduced.

Description

Technical Field

[0001] This utility model relates to the field of heavy-duty hydraulic jacks, and in particular to heavy-duty hydraulic jacks with a safety locking structure. Background Technology

[0002] Heavy-duty hydraulic jacks are widely used in civil engineering jacking construction due to their large load-bearing capacity, and they also serve to provide support and prestress.

[0003] Existing heavy-duty hydraulic jacks need to be under load for extended periods during use, which can easily lead to oil backflow and even damage. This can cause the piston rod in the heavy-duty hydraulic jack to fall back, increasing safety hazards. Therefore, we propose a heavy-duty hydraulic jack with a safety locking structure. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a heavy-duty hydraulic jack with a safety locking structure. This solves the technical problem that existing heavy-duty hydraulic jacks need to enter a long-term load state during use, at which time oil return is very likely to occur, or even cause damage. This can easily cause the piston rod in the heavy-duty hydraulic jack to fall back, increasing the safety hazard.

[0005] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: a heavy-duty hydraulic jack with a safety locking structure is designed, including a base, a cylinder is provided at the top middle of the base, a piston rod is provided inside the cylinder, a top plate is connected to the top of the piston rod, a support ring is fixedly sleeved on the outer wall of the cylinder, a set of locking structures are symmetrically arranged on the surface of the support ring, and an auxiliary structure is provided on the top of the locking structure.

[0006] The locking structure includes a limiting sleeve, which is fixed to the surface of the supporting ring frame. A limiting groove is formed on the surface of the limiting sleeve. A movable rod is matched and engaged inside the limiting sleeve. Several adjustment holes are evenly formed inside the movable rod. A limiting block is fixed to the surface of the movable rod. The limiting sleeve and the movable rod are connected by bolts.

[0007] Preferably, the movable rod and the limiting block are integrally formed, and the limiting block is matched and engaged inside the limiting groove.

[0008] Preferably, the bolt passes through the limiting sleeve and the movable rod.

[0009] Preferably, the auxiliary structure includes a threaded groove located on the inner side of the top of the movable rod. A screw is threaded into the threaded groove, and a T-shaped rod is fixed to the top of the screw. An auxiliary handle is connected to the side of the T-shaped rod.

[0010] Preferably, the threaded groove and the movable rod are integrally formed, and the depth of the threaded groove is the same as the length of the screw.

[0011] Preferably, the T-shaped rod and the auxiliary handle are fixedly connected, and the outer end of the auxiliary handle extends beyond the edge of the top plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model adjusts the height of the movable rod by adjusting the rising height of the piston rod. The movable rod is moved upward until the top of the auxiliary structure is about to touch the top plate. The cooperation between the limiting groove and the limiting block can reduce the rotational deviation of the movable rod. Then, the bolt is passed through the limiting cylinder and the corresponding adjustment hole to limit the movable rod. After that, the auxiliary structure is adjusted so that the top of the auxiliary structure is close to the top plate. At this time, the top plate can be locked, effectively preventing the piston rod from falling back and reducing safety hazards.

[0014] 2. In this utility model, by holding the auxiliary handle and rotating the T-shaped rod, the screw can be rotated, thereby changing the contact surface of the screw in the threaded groove, realizing the height adjustment of the T-shaped rod, which is convenient to compensate for the gap difference between the movable rod and the top plate and improves the adjustment accuracy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial structural diagram of the present invention.

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the movable rod of this utility model;

[0018] In the diagram: 1. Base; 2. Cylinder; 3. Piston rod; 4. Top plate; 5. Support ring frame; 6. Locking structure; 7. Auxiliary structure;

[0019] 601. Limiting sleeve; 602. Limiting groove; 603. Movable rod; 604. Adjusting hole; 605. Limiting block; 606. Bolt;

[0020] 701. Threaded groove; 702. Screw; 703. T-shaped rod; 704. Auxiliary handle. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0022] Heavy-duty hydraulic jacks with safety locking mechanisms, see [link / reference]. Figures 1 to 3It includes a base 1, a cylinder 2 at the top center of the base 1, a piston rod 3 inside the cylinder 2, a top plate 4 connected to the top of the piston rod 3, a support ring 5 fixedly sleeved on the outer wall of the cylinder 2, a set of locking structures 6 symmetrically arranged on the surface of the support ring 5, and an auxiliary structure 7 on the top of the locking structure 6.

[0023] The locking structure 6 includes a limiting sleeve 601, which is fixed to the surface of the supporting ring frame 5. A limiting groove 602 is formed on the surface of the limiting sleeve 601. A movable rod 603 is matched and engaged inside the limiting sleeve 601. A plurality of adjustment holes 604 are evenly formed inside the movable rod 603. A limiting block 605 is fixedly attached to the surface of the movable rod 603. The movable rod 603 and the limiting block 605 are integrally formed. The limiting block 605 is matched and engaged inside the limiting groove 602. The limiting sleeve 601 and the movable rod 603 are connected by bolts 606. Furthermore, the bolts 606 penetrate through the interior of the limiting sleeve 601 and the movable rod 603. This invention adjusts the height of the movable rod 603 by raising the piston rod 3. The movable rod 603 is moved upward until the top of the auxiliary structure 7 is about to touch the top plate 4. The cooperation between the limiting groove 602 and the limiting block 605 can reduce the rotational offset of the movable rod 603. Then, the bolt 606 is passed through the limiting cylinder 601 and the corresponding adjustment hole 604 to limit the movable rod 603. After that, the auxiliary structure 7 is adjusted so that the top of the auxiliary structure 7 is close to the top plate 4. At this time, the top plate 4 can be locked, effectively preventing the piston rod 3 from falling back and reducing safety hazards.

[0024] It is worth noting that the auxiliary structure 7 includes a threaded groove 701, which is located on the inner side of the top of the movable rod 603. A screw rod 702 is screwed into the threaded groove 701. The threaded groove 701 and the movable rod 603 are integrally formed, and the depth of the threaded groove 701 is the same as the length of the screw rod 702. A T-shaped rod 703 is fixedly connected to the top of the screw rod 702, and an auxiliary handle 704 is connected to the side of the T-shaped rod 703. It is worth noting that the T-shaped rod 703 and the auxiliary handle 704 are fixedly connected, and the outer end of the auxiliary handle 704 extends beyond the edge of the top plate 4. In this invention, by holding the auxiliary handle 704 and rotating the T-shaped rod 703, the screw rod 702 can be rotated, thereby changing the contact surface of the screw rod 702 in the threaded groove 701, realizing the height adjustment of the T-shaped rod 703. This facilitates the compensation of the gap difference between the movable rod 603 and the top plate 4, and improves the adjustment accuracy.

[0025] Working principle: The item to be lifted is placed on the surface of the top plate 4. The hydraulic system between the cylinder 2 and the piston rod 3 lifts the top plate 4 and the item to the required height. The height of the movable rod 603 is adjusted by the rising height of the piston rod 3. The movable rod 603 is moved upward until the top of the T-shaped rod 703 is about to touch the top plate 4. The cooperation between the limiting groove 602 and the limiting block 605 can reduce the rotational deviation of the movable rod 603. Then, the bolt 606 is passed through the limiting sleeve 601 and the corresponding adjustment hole 604 to limit the movable rod 603. Then, the auxiliary handle 704 is held and the T-shaped rod 703 is rotated to realize the rotation of the screw 702, thereby changing the contact surface of the screw 702 in the thread groove 701, realizing the height adjustment of the T-shaped rod 703, and compensating for the gap difference between the movable rod 603 and the top plate 4. When the top of the T-shaped rod 703 is close to the top plate 4, the top plate 4 can be locked to prevent the piston rod 3 from falling back and reduce safety hazards.

[0026] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A heavy-duty hydraulic jack with a safety locking structure, comprising a base (1), characterized in that, The base (1) has a cylinder (2) at the top center, a piston rod (3) inside the cylinder (2), a top plate (4) connected to the top of the piston rod (3), a support ring frame (5) fixedly sleeved on the outer wall of the cylinder (2), a set of locking structures (6) symmetrically arranged on the surface of the support ring frame (5), and an auxiliary structure (7) on the top of the locking structure (6). The locking structure (6) includes a limiting sleeve (601), which is fixed to the surface of the supporting ring frame (5). A limiting groove (602) is provided on the surface of the limiting sleeve (601). A movable rod (603) is matched and engaged inside the limiting sleeve (601). A plurality of adjusting holes (604) are evenly provided inside the movable rod (603). A limiting block (605) is fixed to the surface of the movable rod (603). The limiting sleeve (601) and the movable rod (603) are connected by bolts (606).

2. The heavy-duty hydraulic jack with a safety locking structure as described in claim 1, characterized in that, The movable rod (603) and the limiting block (605) are integrally formed, and the limiting block (605) is matched and engaged inside the limiting groove (602).

3. The heavy-duty hydraulic jack with a safety locking structure as described in claim 1, characterized in that, The bolt (606) passes through the inside of the limiting sleeve (601) and the movable rod (603).

4. The heavy-duty hydraulic jack with a safety locking structure as described in claim 1, characterized in that, The auxiliary structure (7) includes a threaded groove (701), which is located on the inner side of the top of the movable rod (603). A screw rod (702) is screwed into the threaded groove (701), and a T-shaped rod (703) is fixed to the top of the screw rod (702). An auxiliary handle (704) is connected to the side of the T-shaped rod (703).

5. The heavy-duty hydraulic jack with a safety locking structure as described in claim 4, characterized in that, The threaded groove (701) and the movable rod (603) are integrally formed, and the depth of the threaded groove (701) is the same as the length of the screw (702).

6. The heavy-duty hydraulic jack with a safety locking structure as described in claim 4, characterized in that, The T-shaped rod (703) and the auxiliary handle (704) are fixedly connected, and the outer end of the auxiliary handle (704) extends beyond the edge of the top plate (4).

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