Limiting unloading hydraulic jack

Abstract

The utility model relates to the technical field of hydraulic jacks, in particular to a limiting unloading hydraulic jack which comprises a bottom plate, the limiting unloading hydraulic jack comprises an installation base installed at the top end of the bottom plate, a fixing base is installed at the top end of the installation base, a hydraulic cylinder body is installed in the fixing base, a main piston is arranged in the hydraulic cylinder body, and the main piston is connected with the hydraulic cylinder body. A saddle is arranged at the top end of the main piston, a connecting seat is mounted on the side wall of one end of the mounting seat, a pump cylinder is mounted at one end of the connecting seat, a piston body is arranged in the pump cylinder, a handle is arranged at the top end of the piston body, a hinge seat is mounted at the bottom end of the handle, and a first mounting plate is mounted on the outer wall of the pump cylinder. According to the utility model, the threaded groove is in threaded connection with the external thread, so that the external thread is conveniently driven not to be clamped with the threaded groove by rotating the main piston, the saddle and the main piston can be conveniently detached and replaced, and an operator can conveniently operate.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic jack technology, and in particular to a hydraulic jack for limiting and unloading. Background Technology

[0002] Hydraulic jacks are jacks that use plungers or hydraulic cylinders as rigid lifting components. They are characterized by their compact structure, stable operation, large lifting force, and self-locking capability. Hydraulic jacks have strong lifting capacity, with heavy-duty hydraulic jacks having a lifting force exceeding 100. Limiting and unloading hydraulic jacks are those that can remove the force borne by the hydraulic jack. In hydraulic systems, the function of the unloading circuit is to allow the hydraulic jack to operate with near-zero power loss under frequent use, thereby reducing power loss and extending the life of the hydraulic jack.

[0003] Currently, most hydraulic jacks with limit-free unloading mechanisms on the market experience shaking and tipping during prolonged use due to the significant force they must withstand during lifting. This affects their performance. Furthermore, the existing limit-free unloading hydraulic jacks do not allow for saddle replacement, causing inconvenience to operators. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] In view of the fact that most hydraulic jacks for limiting unloading on the market, as described above or in the prior art, wobble and tip over during prolonged use due to the large force required for lifting, thus affecting their performance. Furthermore, the existing hydraulic jacks for limiting unloading cannot replace their saddles, causing inconvenience to operators. Therefore, this utility model is proposed.

[0006] Therefore, the purpose of this utility model is to provide a hydraulic jack for limiting and unloading.

[0007] To solve the above technical problems, this utility model provides the following technical solution: A hydraulic jack for limiting and unloading includes a base plate, which includes a mounting seat installed on the top of the base plate. A fixed seat is installed on the top of the mounting seat. A hydraulic cylinder body is installed inside the fixed seat, and a main piston is provided inside the hydraulic cylinder body. A saddle is provided on the top of the main piston. A connecting seat is installed on the side wall of one end of the mounting seat, and a pump cylinder is installed at one end of the connecting seat. A piston body is provided inside the pump cylinder, and a handle is provided on the top of the piston body. A hinge seat is installed at the bottom of the handle. A first mounting plate is installed on the outer wall of the pump cylinder, and a hinge plate is hinged to the top of the first mounting plate. The top of the hinge plate is hinged to the interior of the hinge seat. A safety release valve is installed inside the mounting seat.

[0008] An anti-slip mechanism includes a mounting frame, a first groove at the bottom of the mounting frame, a mounting bracket at the top inside the first groove, a turntable body rotatably mounted inside the mounting bracket via a roller, a threaded hole inside the turntable body, a threaded rod threadedly connected inside the threaded hole, a second mounting plate at the bottom of the threaded rod, an anti-slip plate at the bottom of the second mounting plate, and a conical toothed disc mounted on the outer wall of the turntable body.

[0009] As a preferred embodiment of the hydraulic jack for limiting and unloading according to this utility model, the mounting frame has a rotating rod that passes through the first groove and is rotatably mounted inside the frame via a bearing. One end of the rotating rod is equipped with a bevel gear, which meshes with a bevel gear disc.

[0010] By adopting the above technical solution, this solution uses the meshing of a bevel gear and a bevel gear disk to make the bevel gear rotate, thereby driving the bevel gear disk to rotate simultaneously, which in turn drives the turntable body to rotate simultaneously.

[0011] As a preferred embodiment of the hydraulic jack for limiting and unloading according to this utility model, wherein: one end of the rotating rod is equipped with a handle body, and the outer wall of the handle body is equipped with anti-slip texture.

[0012] By adopting the above technical solution, this solution uses anti-slip textures installed on the outer wall of the handle body to prevent the operator from slipping when turning the handle body.

[0013] In a preferred embodiment of the hydraulic jack for limiting and unloading according to this utility model, a sliding rod is installed at the top of the first groove, and a sliding sleeve is fitted on the outer wall of the sliding rod, wherein the outer wall of the sliding sleeve is fixedly connected to the outer wall of the threaded rod.

[0014] By adopting the above technical solution, this solution uses the cooperation between the sliding rod and the sliding sleeve to make the threaded rod move up and down while simultaneously driving the sliding sleeve to move up and down on the outer wall of the sliding rod.

[0015] As a preferred embodiment of the hydraulic jack for limiting and unloading according to this utility model, the saddle seat has a threaded groove inside and an anti-slip groove at the top of the saddle seat.

[0016] By adopting the above technical solution, this solution provides an anti-slip groove at the top of the saddle, thereby improving the anti-slip effect of the saddle.

[0017] As a preferred embodiment of the hydraulic jack for limiting and unloading according to this utility model, the outer wall of the main piston is provided with an external thread, and the external thread is threadedly connected to the thread groove.

[0018] By adopting the above technical solution, this solution uses external thread and threaded groove to connect, which facilitates the passage of the saddle and eliminates the need for the saddle to be installed with the main piston, thus making it easier to replace.

[0019] In a preferred embodiment of the hydraulic jack for limiting and unloading according to this utility model, an anti-slip pad is installed at the bottom end of the anti-slip plate.

[0020] By adopting the above technical solution, this solution uses an anti-slip mat installed at the bottom of the anti-slip plate, which then adheres to the ground, thereby improving the anti-slip effect of the anti-slip plate.

[0021] The hydraulic jack for limiting and unloading according to this utility model has the following beneficial effects:

[0022] This invention firstly drives the rotating rod and bevel gear to rotate by rotating the handle body. The bevel gear meshes with the bevel gear plate, causing the bevel gear to rotate and simultaneously drive the bevel gear plate to rotate. It is also threadedly connected to the threaded rod through a threaded hole. Furthermore, through the cooperation of the sliding rod and the sliding sleeve, the rotating disc body rotates, causing the threaded rod to rise and fall inside the threaded hole via the sliding sleeve and the sliding rod. This facilitates the rising and falling of the threaded rod, which in turn causes the second mounting plate and the anti-slip plate to rise and fall to contact the ground. This allows the anti-slip plate to activate the anti-slip effect on the base plate, preventing the hydraulic jack with limit and unloading mechanism from tipping over due to force during startup.

[0023] This invention firstly connects the external thread with the threaded groove, making it easy to rotate the main piston to prevent the external thread from engaging with the threaded groove. This facilitates the disassembly and replacement of the saddle and the main piston, making it easier for operators to carry out the operation. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0025] Figure 1 A schematic diagram of the main structure of a hydraulic jack for limiting and unloading.

[0026] Figure 2 A schematic diagram of the front sectional view of a hydraulic jack for limiting and unloading.

[0027] Figure 3 A bottom view schematic diagram of the anti-slip mechanism of a hydraulic jack for limiting and unloading.

[0028] Figure 4 This is a type of hydraulic jack for limiting and unloading. Figure 2 Enlarged structural diagram at point A in the middle;

[0029] Figure 5 A schematic diagram of the internal structure of the mounting frame of a hydraulic jack for limiting and unloading.

[0030] Figure 6 This is a schematic diagram of the saddle and main piston assembly structure of a hydraulic jack for limiting and unloading.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1. Base plate; 101. Mounting seat; 102. Fixed seat; 103. Hydraulic cylinder body; 104. Main piston; 1041. External thread; 105. Saddle; 1051. Threaded groove; 106. Connecting seat; 107. Pump cylinder; 108. Piston body; 109. Handle; 1010. Hinge seat; 1011. Hinge plate; 1012. First mounting plate; 1013. Safety release valve;

[0033] 2. Anti-slip mechanism; 201. Mounting frame; 202. First groove; 203. Mounting bracket; 204. Turntable body; 205. Threaded hole; 206. Threaded rod; 207. Second mounting plate; 208. Anti-slip plate; 209. Conical gear plate; 2010. Sliding rod; 2011. Sliding sleeve; 2012. Rotating rod; 2013. Conical gear; 2014. Handle body. Detailed Implementation

[0034] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0035] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0037] Example 1: Refer to Figures 1-6 This is the first embodiment of the present invention, which provides a hydraulic jack for limiting and unloading. It addresses the problem that most hydraulic jacks for limiting and unloading on the market, when used for extended periods, experience shaking and tipping during lifting due to the significant force they bear. This affects their performance. The jack includes a base plate 1, with a mounting seat 101 at its top. A fixed seat 102 is mounted on the top of the mounting seat 101. A hydraulic cylinder body 103 is installed inside the fixed seat 102, and a main piston 104 is located inside the hydraulic cylinder body 103. A saddle 105 is mounted on the top of the main piston 104. One end of the mounting seat 101... A connecting seat 106 is installed on the side wall, and a pump cylinder 107 is installed at one end of the connecting seat 106. A piston body 108 is provided inside the pump cylinder 107, and a handle 109 is provided at the top of the piston body 108. Anti-slip texture is installed on the outer wall of the handle 109 to prevent the operator from slipping when using the handle 109. A hinge seat 1010 is installed at the bottom of the handle 109. A first mounting plate 1012 is installed on the outer wall of the pump cylinder 107, and a hinge plate 1011 is hinged to the top of the first mounting plate 1012. The top of the hinge plate 1011 is hinged to the inside of the hinge seat 1010. A safety release valve 1013 is installed inside the mounting seat 101. Through the design of the safety release valve 1013, the hydraulic cylinder body (103) can be limited and unloaded through the safety release valve 1013.

[0038] The saddle 105 has a threaded groove 1051 inside and an anti-slip groove at the top. The outer wall of the main piston 104 is fitted with an external thread 1041, which is threadedly connected to the threaded groove 1051. The threaded connection between the external thread 1041 and the threaded groove 1051 facilitates the passage of the saddle 105, thereby preventing the saddle 105 from being installed with the main piston 104 and making it easier to replace.

[0039] The specific working principle is as follows: when the saddle 105 needs to be disassembled and replaced, it is first connected to the external thread 1041 through the threaded groove 1051. This makes it easy to rotate the main piston 104 to drive the external thread 1041 to no longer be engaged with the threaded groove 1051, thereby facilitating the disassembly and replacement of the saddle 105 and the main piston 104, which makes it easier for the operator to operate.

[0040] Example 2: Refer to Figures 1-6 This is the first embodiment of the present invention. This embodiment provides a hydraulic jack for limiting and unloading, which solves the problem that existing hydraulic jacks for limiting and unloading cannot replace the saddle during use, thus causing inconvenience to the operator. The anti-slip mechanism 2 includes a mounting frame 201. The bottom end of the mounting frame 201 has a first groove 202, and the top of the first groove 202 is equipped with a mounting bracket 203. The mounting bracket 203 has a turntable body 204 rotatably mounted inside it via rollers. The turntable body 204 has a threaded hole 205 inside it, and a threaded rod 2 is threadedly connected inside the threaded hole 205. 06, and a second mounting plate 207 is installed at the bottom end of the threaded rod 206, and an anti-slip plate 208 is installed at the bottom end of the second mounting plate 207. A conical toothed disc 209 is installed on the outer wall of the turntable body 204. A sliding rod 2010 is installed at the top end inside the first groove 202, and a sliding sleeve 2011 is sleeved on the outer wall of the sliding rod 2010. The outer wall of the sliding sleeve 2011 is fixedly connected to the outer wall of the threaded rod 206. An anti-slip pad is installed at the bottom end of the anti-slip plate 208. The anti-slip pad is installed at the bottom end of the anti-slip plate 208, so that the anti-slip pad is in contact with the ground, thereby improving the anti-slip effect of the anti-slip plate 208.

[0041] Inside the mounting frame 201, a rotating rod 2012 is rotatably mounted via a bearing, penetrating the interior of the first groove 202. A bevel gear 2013 is mounted at one end of the rotating rod 2012. The bevel gear 2013 meshes with a bevel gear disk 209. Through the meshing of the bevel gear 2013 and the bevel gear disk 209, the rotation of the bevel gear 2013 drives the bevel gear disk 209 to rotate simultaneously, thereby causing the turntable body 204 to rotate simultaneously. A handle body 2014 is mounted at one end of the rotating rod 2012, and the outer wall of the handle body 2014 is provided with anti-slip texture to prevent the operator from slipping when rotating the handle body 2014.

[0042] The specific working principle is as follows: when it is necessary to make the anti-slip plate 208 fit against the ground, firstly, by rotating the handle body 2014, the rotating rod 2012 and the bevel gear 2013 are rotated. The bevel gear 2013 meshes with the bevel gear disc 209, causing the bevel gear 2013 to rotate, which in turn drives the bevel gear disc 209 to rotate simultaneously. It is also threadedly connected to the threaded rod 206 through the threaded hole 205. Furthermore, through the cooperation of the sliding rod 2010 and the sliding sleeve 2011, the turntable body 204 rotates, causing the threaded rod 206 to rise and fall inside the threaded hole 205 through the sliding sleeve 2011 and the sliding rod 2010. This allows the threaded rod 206 to rise and fall, thereby driving the second mounting plate 207 and the anti-slip plate 208 to rise and fall to contact the ground. This facilitates the anti-slip effect of the base plate 1 through the anti-slip plate 208, preventing the hydraulic jack with limit unloading from tipping over due to force during startup.

[0043] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hydraulic jack for limiting and unloading, characterized in that: include, A base plate (1) includes a mounting seat (101) mounted on the top of the base plate (1). A fixing seat (102) is mounted on the top of the mounting seat (101). A hydraulic cylinder body (103) is installed inside the fixing seat (102), and a main piston (104) is provided inside the hydraulic cylinder body (103). A saddle seat (105) is provided on the top of the main piston (104). A connecting seat (106) is mounted on the side wall of one end of the mounting seat (101), and a pump cylinder (107) is mounted on one end of the connecting seat (106). The cylinder (107) is provided with a piston body (108) inside, and a handle (109) is provided at the top of the piston body (108). A hinge seat (1010) is installed at the bottom of the handle (109). A first mounting plate (1012) is installed on the outer wall of the pump cylinder (107), and a hinge plate (1011) is hinged to the top of the first mounting plate (1012). The top of the hinge plate (1011) is hinged to the inside of the hinge seat (1010). A safety release valve (1013) is installed inside the mounting seat (101). The anti-slip mechanism (2) includes a mounting frame (201), the bottom end of which is provided with a first groove (202), and the top end of the first groove (202) is provided with a mounting bracket (203). The mounting bracket (203) is mounted with a turntable body (204) through a roller, and the turntable body (204) is provided with a threaded hole (205). The threaded hole (205) is threadedly connected to a threaded rod (206), and the bottom end of the threaded rod (206) is provided with a second mounting plate (207). The bottom end of the second mounting plate (207) is provided with an anti-slip plate (208), and the outer wall of the turntable body (204) is provided with a conical toothed disc (209).

2. The hydraulic jack for limiting and unloading as described in claim 1, characterized in that: The mounting frame (201) is rotatably mounted inside the first groove (202) via a bearing, and a bevel gear (2013) is mounted on one end of the bevel gear (2012), which meshes with the bevel gear disc (209).

3. The hydraulic jack for limiting and unloading as described in claim 2, characterized in that: One end of the rotating rod (2012) is fitted with a handle body (2014), and the outer wall of the handle body (2014) is fitted with anti-slip texture.

4. The hydraulic jack for limiting and unloading as described in claim 1, characterized in that: A sliding rod (2010) is installed at the top of the first groove (202), and a sliding sleeve (2011) is sleeved on the outer wall of the sliding rod (2010). The outer wall of the sliding sleeve (2011) is fixedly connected to the outer wall of the threaded rod (206).

5. A hydraulic jack for limiting and unloading as described in claim 1, characterized in that: The saddle (105) has a threaded groove (1051) inside and an anti-slip groove at the top.

6. A hydraulic jack for limiting and unloading as described in claim 1, characterized in that: The outer wall of the main piston (104) is fitted with an external thread (1041), and the external thread (1041) is threadedly connected to the thread groove (1051).

7. A hydraulic jack for limiting and unloading as described in claim 1, characterized in that: The bottom of the anti-slip plate (208) is equipped with an anti-slip pad.

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