Mechanical locking mechanism of hydraulic cylinder

Abstract

The utility model relates to the technical field of hydraulic cylinder locking, in particular to a hydraulic cylinder mechanical locking mechanism which comprises a bottom plate, a mounting seat is arranged in the middle of the upper end of the bottom plate, a hydraulic mechanism is arranged in the mounting seat, and a fixing plate is arranged on the upper portion of the outer surface of the hydraulic mechanism. The front portion and the rear portion of the upper end of the fixing plate are each provided with two movable grooves, the left portion and the right portion of the upper end of the fixing plate are each provided with a supporting plate, a locking device is jointly arranged between the two supporting plates, a threaded hole is formed in the middle of the upper end of the hydraulic mechanism, and a threaded rod is installed in the threaded hole in a threaded mode; a locking ring is fixedly mounted at the upper end of the screw rod; the locking device comprises a motor, and a two-way lead screw is fixedly installed at the output end of the motor. According to the mechanical locking mechanism of the hydraulic cylinder, the hydraulic cylinder can be conveniently and automatically locked when stopped, manual operation is not needed, and the locking efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinder locking, in particular to a hydraulic cylinder mechanical locking mechanism. Background Art

[0002] A hydraulic cylinder is an actuator that drives and bears large loads. It is usually required to be able to stably bear external loads for a long time without any displacement when the movement stops, that is, it needs to have a locking and positioning function. The mechanical structure can realize long-term, high-precision locking and positioning of the piston at any position under external loads, and can effectively avoid piston slippage caused by internal leakage of the hydraulic cylinder. Piston slippage can easily cause major accidents. However, the existing mechanical locking mechanism of the hydraulic cylinder is inconvenient and requires manual locking when the hydraulic cylinder stops, which is more troublesome and affects the locking efficiency. Therefore, we have introduced a new mechanical locking mechanism for the hydraulic cylinder. Utility Model Content

[0003] The main purpose of the utility model is to provide a hydraulic cylinder mechanical locking mechanism, which can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A hydraulic cylinder mechanical locking mechanism comprises a base plate, a mounting seat is provided at the middle part of the upper end of the base plate, a hydraulic mechanism is provided inside the mounting seat, a fixing plate is provided at the upper part of the outer surface of the hydraulic mechanism, two movable grooves are provided at the front and rear parts of the upper end of the fixing plate, support plates are provided at the left and right parts of the upper end of the fixing plate, a locking device is provided between the two support plates, a threaded hole is provided at the middle part of the upper end of the hydraulic mechanism, a screw is installed on the internal thread of the threaded hole, and a locking ring is fixedly installed on the upper end of the screw.

[0006] Preferably, the locking device includes a motor, a bidirectional screw is fixedly installed on the output end of the motor, a bearing is provided on the left portion of the outer surface of the bidirectional screw, a guide rod is commonly provided between the two support plates, a locking block is movably installed on the left and right portions of the outer surfaces of the guide rod and the bidirectional screw, movable blocks are provided on the lower front and rear portions of the lower ends of the two locking blocks, locking grooves are provided on the opposite surfaces of the two locking blocks, and abrasive pads are provided on the inner surfaces of the two locking grooves.

[0007] Preferably, the motor is fixedly mounted on the right end of the right support plate, and the bidirectional screw is rotatably connected to the right end of the left support plate via a bearing.

[0008] Preferably, the locking block is movably installed in the movable groove through a movable block.

[0009] Preferably, the hydraulic mechanism includes a cylinder, a piston is provided on the inner surface of the cylinder, a hydraulic rod is provided on the upper end of the piston, a first oil delivery port and a second oil delivery port are respectively provided on the upper left portion and the lower left portion of the outer surface of the cylinder, and valves are provided on the outer surfaces of the first oil delivery port and the second oil delivery port.

[0010] Preferably, the outer surface of the hydraulic rod and the inner surface of the sanding pad are tightly fitted together.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. When the cylinder stops, the controller turns on the motor, and the motor drives the two-way screw to rotate, which in turn drives the left and right locking blocks to move closer to the middle until the frosted pads inside the two locking blocks fit the outer surface of the hydraulic rod. The cylinder hydraulic rod can be locked and fixed. The motor and the two-way screw are used together to facilitate automatic locking, solving the problem of major accidents caused by piston slippage.

[0013] 2. When in use, the first oil delivery port and the second oil delivery port deliver oil alternately and utilize the hydraulic principle to push the piston to move. Since valves are installed on the first oil delivery port and the second oil delivery port, the hydraulic cylinder can achieve hydraulic extension and retraction by alternately opening and closing the valves. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a hydraulic cylinder mechanical locking mechanism of the utility model;

[0015] Figure 2 This is a partial overall structural schematic diagram of a hydraulic cylinder mechanical locking mechanism of the utility model;

[0016] Figure 3 This is a schematic diagram of the overall structure of a locking device of a hydraulic cylinder mechanical locking mechanism of the utility model;

[0017] Figure 4 The utility model is a schematic diagram of the overall structure of a hydraulic mechanism of a hydraulic cylinder mechanical locking mechanism.

[0018] In the figure: 1. base plate; 2. mounting seat; 21. cylinder; 22. piston; 23. hydraulic rod; 24. first oil delivery port; 25. second oil delivery port; 26. valve; 3. hydraulic mechanism; 4. fixing plate; 5. movable groove; 6. supporting plate; 7. locking device; 71. motor; 72. bidirectional screw rod; 73. bearing; 74. guide rod; 75. locking block; 76. movable block; 77. locking groove; 78. frosted pad; 8. threaded hole; 9. screw rod; 10. locking ring. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited,

[0022] The terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0023] See also Figure 1-4 , the utility model provides a technical solution:

[0024] A hydraulic cylinder mechanical locking mechanism comprises a base plate 1, a mounting seat 2 is arranged in the middle of the upper end of the base plate 1, a hydraulic mechanism 3 is arranged inside the mounting seat 2, a fixing plate 4 is arranged on the upper part of the outer surface of the hydraulic mechanism 3, two movable grooves 5 are arranged at the front and rear of the upper end of the fixing plate 4, support plates 6 are arranged at the left and right parts of the upper end of the fixing plate 4, a locking device 7 is arranged between the two support plates 6, a threaded hole 8 is arranged in the middle of the upper end of the hydraulic mechanism 3, a screw 9 is installed in the internal thread of the threaded hole 8, and a locking ring 10 is fixedly installed on the upper end of the screw 9.

[0025] In this embodiment, the locking device 7 includes a motor 71, a bidirectional screw rod 72 is fixedly installed at the output end of the motor 71, a bearing 73 is provided on the left part of the outer surface of the bidirectional screw rod 72, a guide rod 74 is commonly provided between the two support plates 6, and a locking block 75 is movably installed on the left and right parts of the outer surfaces of the guide rod 74 and the bidirectional screw rod 72, and movable blocks 76 are provided at the front and rear parts of the lower ends of the two locking blocks 75, and locking grooves 77 are provided on the opposite surfaces of the two locking blocks 75, and frosted pads 78 are provided on the inner surfaces of the two locking grooves 77; the motor 71 is fixedly installed at the right end of the right support plate 6, and the bidirectional screw rod 72 is rotatably connected to the right end of the left support plate 6 through the bearing 73; the locking block 75 is movably installed in the movable groove 5 through the movable block 76;.

[0026] In this embodiment, the hydraulic mechanism 3 includes a cylinder 21, a piston 22 is provided on the inner surface of the cylinder 21, a hydraulic rod 23 is provided on the upper end of the piston 22, a first oil delivery port 24 and a second oil delivery port 25 are respectively provided on the upper left portion of the outer surface of the cylinder 21 and the lower left portion of the outer surface, and valves 26 are provided on the outer surfaces of the first oil delivery port 24 and the second oil delivery port 25; the outer surface of the hydraulic rod 23 is tightly fitted with the inner surface of the grinding pad 78, and the first oil delivery port 24 and the second oil delivery port 25 are provided with staggered oil delivery through the first oil delivery port 24 and the second oil delivery port 25 to use the hydraulic principle to push the piston 22 to move, and the hydraulic cylinder can achieve hydraulic extension and retraction through the valve 26 that is provided and the valve 26 is alternately opened and closed.

[0027] It should be noted that the utility model is a mechanical locking mechanism of a hydraulic cylinder. When in use, the first oil delivery port 24 and the second oil delivery port 25 deliver oil alternately and utilize the hydraulic principle to push the piston 22 to move. Since valves 26 are installed on the first oil delivery port 24 and the second oil delivery port 25, the hydraulic cylinder is hydraulically extended and retracted by alternately opening and closing the valves 26. When the cylinder stops, the motor 71 is turned on by the controller, and the motor 71 drives the two-way screw rod 72 to rotate, thereby driving the left and right locking blocks 75 to approach the middle until the frosted pads 78 inside the two locking blocks 75 fit with the outer surface of the hydraulic rod 23, and the cylinder hydraulic rod 23 can be locked and fixed. By using the motor 71 and the two-way screw rod 72 in coordination, automatic locking is convenient, which solves the problem that the sliding of the piston 22 may easily cause major accidents.

[0028] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A hydraulic cylinder mechanical locking mechanism, comprising a base plate (1), characterized in that: A mounting seat (2) is provided at the middle of the upper end of the base plate (1), a hydraulic mechanism (3) is provided inside the mounting seat (2), a fixing plate (4) is provided at the upper portion of the outer surface of the hydraulic mechanism (3), two movable grooves (5) are provided at the front and rear portions of the upper end of the fixing plate (4), support plates (6) are provided at the left and right portions of the upper end of the fixing plate (4), a locking device (7) is provided between the two support plates (6), a threaded hole (8) is provided at the middle of the upper end of the hydraulic mechanism (3), a screw rod (9) is installed in the internal thread of the threaded hole (8), and a locking ring (10) is fixedly installed at the upper end of the screw rod (9); The locking device (7) comprises a motor (71), a bidirectional screw rod (72) is fixedly mounted on the output end of the motor (71), a bearing (73) is arranged on the left portion of the outer surface of the bidirectional screw rod (72), a guide rod (74) is arranged between the two support plates (6), a locking block (75) is movably mounted on the left and right portions of the outer surfaces of the guide rod (74) and the bidirectional screw rod (72), movable blocks (76) are arranged on the front and rear portions of the lower ends of the two locking blocks (75), locking grooves (77) are arranged on the opposite surfaces of the two locking blocks (75), and a grinding pad (78) is arranged on the inner surfaces of the two locking grooves (77).

2. A hydraulic cylinder mechanical locking mechanism according to claim 1, characterized in that: The motor (71) is fixedly mounted on the right end of the right support plate (6), and the bidirectional screw rod (72) is rotatably connected to the right end of the left support plate (6) via a bearing (73).

3. The hydraulic cylinder mechanical locking mechanism according to claim 1, characterized in that: The locking block (75) is movably mounted in the movable groove (5) via a movable block (76).

4. The hydraulic cylinder mechanical locking mechanism according to claim 1, characterized in that: The hydraulic mechanism (3) comprises a cylinder (21), the inner surface of the cylinder (21) is provided with a piston (22), the upper end of the piston (22) is provided with a hydraulic rod (23), the upper left portion of the outer surface of the cylinder (21) and the lower left portion are provided with a first oil delivery port (24) and a second oil delivery port (25), respectively, and the outer surfaces of the first oil delivery port (24) and the second oil delivery port (25) are both provided with valves (26).

5. A hydraulic cylinder mechanical locking mechanism according to claim 4, characterized in that: The outer surface of the hydraulic rod (23) and the inner surface of the grinding pad (78) are tightly fitted together.

Images