Pull rod type separating hydraulic jack with mechanical lock

Abstract

The utility model relates to a pull rod type separating hydraulic jack with a mechanical lock, and aims to solve the problems that the contact area between the bottom of the existing self-locking separating hydraulic jack and the ground is small, and the upper end of the existing self-locking separating hydraulic jack needs to bear a heavy workpiece, so that the hydraulic jack is unstable in use and is easy to incline, and the service life of the hydraulic jack is influenced. The hydraulic jack comprises a hydraulic jack body, an auxiliary pull rod mechanism is arranged outside the hydraulic jack body, when the hydraulic jack body works, a movable disc descends, a pull rod body effectively drives an expansion plate to rotate, at the moment, the expansion plate is converted into the horizontal direction from the vertical direction, and therefore the expansion plate is in the horizontal direction. The contact area with the ground is effectively increased, the placing stability of the hydraulic jack body is improved, after the hydraulic jack body finishes working, the movable disc is moved upwards, at the moment, the pull rod body effectively drives the expansion plate to rotate, and therefore the expansion plate is effectively stored, and the occupied space is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic jacks, in particular to a pull-rod type separated hydraulic jack with a mechanical lock. Background Art

[0002] Hydraulic jacks, also known as oil jacks, use a plunger or hydraulic cylinder as a rigid lifting member. They are simple in construction, lightweight, portable, and easy to move. They are widely used in power maintenance, bridge repair, heavy lifting, static pile driving, foundation settlement, and bridge and shipbuilding. Self-locking, split-type hydraulic jacks are widely used in lifting and supporting applications, particularly in industrial and construction projects where heavy loads must be supported for extended periods.

[0003] The existing self-locking separation type hydraulic jack is less stable and prone to tilting during use because its bottom has a smaller contact area with the ground and its upper end needs to bear a heavier workpiece, thereby reducing its safety during use. In view of this, we propose a pull rod type separation type hydraulic jack with a mechanical lock. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the existing technology and meet the actual needs. It provides a pull-rod type separated hydraulic jack with a mechanical lock to solve the technical problem that the current existing self-locking separated hydraulic jack is unstable and prone to tilting when in use due to the small contact area between its bottom and the ground and the upper end needs to bear a heavier workpiece, thereby reducing its safety when in use.

[0005] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is as follows: a pull rod type hydraulic jack with a mechanical lock separation is designed, comprising a hydraulic jack body, an auxiliary pull rod mechanism is provided on the outside of the hydraulic jack body, and a set of adjustment mechanisms are symmetrically provided between the hydraulic jack body and the auxiliary pull rod mechanism;

[0006] The auxiliary pull rod mechanism includes a movable plate, which is sleeved on the surface of the hydraulic jack body. Two groups of limit frames are evenly distributed on the outside of the movable plate. The limit frames are movably connected to the pull rod body inside, and an expansion plate is provided on the outside of the bottom of the pull rod body.

[0007] Preferably, the upper and lower ends of the pull rod body can rotate along the limiting frame and the expansion plate respectively, and the expansion plate is clamped with the bottom of the hydraulic jack body.

[0008] Preferably, the hydraulic jack body includes a jack body, an upper limit ring plate is fixedly connected to the outside of the jack body, a lower limit ring plate is provided below the upper limit ring plate, a support ring plate is provided below the lower limit ring plate, and a base is provided below the support ring plate.

[0009] Preferably, the upper limit ring plate and the lower limit ring plate are respectively formed integrally with the jack body, and the jack body is fixedly connected to the support ring plate.

[0010] Preferably, the adjustment mechanism includes a hollow cylinder rack, a group of the hollow cylinder racks are symmetrically fixed on the surface of the support ring plate, a screw is screwed inside the hollow cylinder rack, a rotating block is fixed on the top of the screw, and a limiting screw ring is sleeved on the outside of the hollow cylinder rack.

[0011] Preferably, the outer surface of the hollow cylinder frame is provided with a threaded section, and when the limiting screw ring is connected to the threaded section on the surface of the hollow cylinder frame, the bottom of the movable disk fits with the top of the limiting screw ring.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. In the present invention, when the hydraulic jack body is working, the movable plate is lowered, and the pull rod body effectively drives the expansion plate to rotate. At this time, the expansion plate is transformed from a vertical direction to a horizontal direction, effectively increasing the contact area with the ground and improving the placement stability of the hydraulic jack body. When the hydraulic jack body finishes working, the movable plate is moved up. At this time, the pull rod body effectively drives the expansion plate to rotate, thereby effectively storing the expansion plate and reducing the occupied space.

[0014] 2. In the utility model, the upper limit ring plate effectively limits the movable plate to the upper limit, preventing the movable plate from moving away from the jack body, and the lower limit ring plate effectively limits the movable plate to the lower limit, so that when the movable plate contacts the lower limit ring plate, the pull rod body drives the expansion plate to rotate to the horizontal.

[0015] 3. In the utility model, the rising height of the screw is adjusted according to the upward position of the piston rod in the jack body, thereby performing secondary locking on the basis of the self-locking ability of the hydraulic jack body itself, effectively reducing the possibility of the piston rod falling back, thereby reducing safety hazards. When the hydraulic jack body is working, the limiting screw ring is not connected to the threaded section on the surface of the hollow cylinder frame. After the hydraulic jack body finishes working, the limiting screw ring is connected to the threaded section on the surface of the hollow cylinder frame while moving the movable disk upward, thereby completing the positioning of the movable disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2This is a schematic diagram of the overall structure of the utility model from another perspective;

[0018] Figure 3 This is a schematic diagram of the structure of the utility model in working state;

[0019] Figure 4 This is a structural diagram of the utility model in a working state from another perspective;

[0020] In the figure: 1. Hydraulic jack body; 2. Auxiliary pull rod mechanism; 3. Adjustment mechanism;

[0021] 101. Jack body; 102. Upper limit ring plate; 103. Lower limit ring plate; 104. Support ring plate; 105. Base;

[0022] 201, movable plate; 202, limit frame; 203, pull rod body; 204, expansion plate;

[0023] 301. Hollow cylinder frame; 302. Screw; 303. Rotating block; 304. Limiting screw ring. DETAILED DESCRIPTION

[0024] The present invention is further described below with reference to the accompanying drawings and embodiments:

[0025] A pull-rod type hydraulic jack with a mechanical lock, see Figures 1 to 4 , including a hydraulic jack body 1, an auxiliary pull rod mechanism 2 is provided outside the hydraulic jack body 1, and a set of adjustment mechanisms 3 are symmetrically provided between the hydraulic jack body 1 and the auxiliary pull rod mechanism 2;

[0026] The auxiliary pull rod mechanism 2 includes a movable disk 201, which is sleeved on the surface of the hydraulic jack body 1. Two groups of limit frames 202 are evenly distributed on the outside of the movable disk 201. The limit frames 202 are movably connected to the pull rod body 203. An extension plate 204 is provided on the outside of the bottom of the pull rod body 203, wherein the upper and lower ends of the pull rod body 203 can rotate along the limit frame 202 and the extension plate 204 respectively, and the extension plate 204 is clamped to the bottom of the hydraulic jack body 1. In the present invention, when the hydraulic jack body 1 is working, the movable disk 201 is lowered, and the pull rod body 203 effectively drives the expansion plate 204 to rotate. At this time, the expansion plate 204 is transformed from a vertical direction to a horizontal direction, effectively increasing the contact area with the ground, and improving the placement stability of the hydraulic jack body 1. When the hydraulic jack body 1 finishes working, the movable disk 201 is moved up. At this time, the pull rod body 203 effectively drives the expansion plate 204 to rotate, thereby effectively storing the expansion plate 204 and reducing the occupied space.

[0027] It is worth noting that the hydraulic jack body 1 includes a jack body 101, an upper limit ring plate 102 is fixedly connected to the outside of the jack body 101, a lower limit ring plate 103 is provided below the upper limit ring plate 102, and a support ring plate 104 is provided below the lower limit ring plate 103, wherein the upper limit ring plate 102 and the lower limit ring plate 103 are respectively integrally formed with the jack body 101, and the jack body 101 and the support ring plate 104 are fixedly connected, and a base 105 is provided below the support ring plate 104. In the present utility model, the upper limit ring plate 102 effectively limits the movable disk 201 to the upper limit, preventing the movable disk 201 from moving away from the jack body 101, and the lower limit ring plate 103 effectively limits the movable disk 201 to the lower limit, so that when the movable disk 201 contacts the lower limit ring plate 103, the pull rod body 203 drives the expansion plate 204 to rotate to the horizontal.

[0028] It is worth noting that the adjustment mechanism 3 includes a hollow cylinder frame 301, a group of hollow cylinder frames 301 are symmetrically fixed on the surface of the support ring plate 104, a screw 302 is screwed inside the hollow cylinder frame 301, a rotating block 303 is fixed on the top of the screw 302, and a limiting screw ring 304 is sleeved on the outside of the hollow cylinder frame 301, wherein a threaded section is provided on the outer surface of the hollow cylinder frame 301. When the limiting screw ring 304 is connected to the threaded section on the surface of the hollow cylinder frame 301, the bottom of the movable disk 201 fits with the top of the limiting screw ring 304. In the present invention, the rising height of the screw 302 is adjusted according to the upward position of the piston rod in the jack body 101, thereby performing secondary locking on the basis of the self-locking ability of the hydraulic jack body 1, effectively reducing the possibility of the piston rod falling back, thereby reducing safety hazards. When the hydraulic jack body 1 is working, the limiting screw ring 304 is not connected to the threaded section on the surface of the hollow cylinder frame 301. After the hydraulic jack body 1 finishes working, the limiting screw ring 304 is connected to the threaded section on the surface of the hollow cylinder frame 301 while moving the movable disk 201 upward, thereby completing the positioning of the movable disk 201.

[0029] Working principle: When the hydraulic jack body 1 is working, the limiting screw ring 304 is not connected to the threaded section on the surface of the hollow cylinder frame 301. At this time, the movable plate 201 is lowered, and the pull rod body 203 drives the expansion plate 204 to rotate. The expansion plate 204 changes from vertical to horizontal, increasing the contact area with the ground and improving the placement stability of the hydraulic jack body 1. Then, the height of the screw 302 is adjusted according to the upward position of the piston rod in the jack body 101, so that the top of the rotating block 303 is aligned with the bottom of the top plate. They fit together, thereby performing secondary locking on the basis of the self-locking ability of the hydraulic jack body 1, reducing the possibility of the piston rod falling back, thereby reducing safety hazards. When the hydraulic jack body 1 finishes working, the movable disk 201 is moved up. At this time, the pull rod body 203 drives the expansion plate 204 to rotate, thereby storing the expansion plate 204. Then, based on the upward movement of the movable disk 201, the limiting screw ring 304 is connected to the threaded section on the surface of the hollow cylinder frame 301, thereby completing the positioning of the movable disk 201.

[0030] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A pull rod type hydraulic jack with mechanical lock separation, characterized in that: The invention comprises a hydraulic jack body (1), an auxiliary pull rod mechanism (2) is provided outside the hydraulic jack body (1), and a set of adjustment mechanisms (3) are symmetrically provided between the hydraulic jack body (1) and the auxiliary pull rod mechanism (2); The auxiliary pull rod mechanism (2) comprises a movable disk (201), the movable disk (201) being sleeved on the surface of the hydraulic jack body (1), two groups of limit frames (202) being evenly distributed on the outside of the movable disk (201), the limit frames (202) being movably engaged with a pull rod body (203) inside, and an expansion plate (204) being provided on the outside of the bottom of the pull rod body (203).

2. A pull-rod type hydraulic jack with mechanical lock separation according to claim 1, characterized in that: The upper and lower ends of the pull rod body (203) can rotate along the limiting frame (202) and the expansion plate (204) respectively, and the expansion plate (204) is clamped with the bottom of the hydraulic jack body (1).

3. A pull-rod type hydraulic jack with mechanical lock separation according to claim 1, characterized in that: The hydraulic jack body (1) comprises a jack body (101), an upper limit ring plate (102) is fixedly connected to the outer side of the jack body (101), a lower limit ring plate (103) is provided below the upper limit ring plate (102), a support ring plate (104) is provided below the lower limit ring plate (103), and a base (105) is provided below the support ring plate (104).

4. A pull-rod type hydraulic jack with mechanical lock separation according to claim 3, characterized in that: The upper limit ring plate (102) and the lower limit ring plate (103) are respectively formed integrally with the jack body (101), and the jack body (101) and the support ring plate (104) are fixedly connected.

5. A pull-rod type hydraulic jack with mechanical lock separation as claimed in claim 3, characterized in that: The adjusting mechanism (3) comprises a hollow cylinder frame (301), wherein a group of the hollow cylinder frames (301) are symmetrically fixed on the surface of the supporting ring plate (104), a screw rod (302) is screwed inside the hollow cylinder frame (301), a rotating block (303) is fixed on the top of the screw rod (302), and a limiting screw ring (304) is sleeved on the outside of the hollow cylinder frame (301).

6. A pull-rod type hydraulic jack with mechanical lock separation according to claim 5, characterized in that: The outer surface of the hollow cylinder frame (301) is provided with a threaded section. When the limiting screw ring (304) is connected to the threaded section on the surface of the hollow cylinder frame (301), the bottom of the movable disk (201) fits with the top of the limiting screw ring (304).

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