Front horizontal oil cylinder suitable for crane

Abstract

The utility model discloses a front horizontal oil cylinder suitable for a crane. The front horizontal oil cylinder comprises a cylinder bottom, a cylinder barrel, a cylinder head, a piston and a hydraulic rod, the front horizontal oil cylinder further comprises a buffering mechanism used for protecting the cylinder bottom and the cylinder head, and the buffering mechanism is located in the cylinder barrel. The buffer mechanism comprises compression springs, the ends, away from the piston, of the compression springs are fixedly connected with open washers, the ends, close to the piston, of the compression springs are fixedly connected with the outer wall of the piston, and the compression springs are symmetrically arranged on the two sides of the piston. The utility model relates to the field of cranes. According to the concrete prestressed beam, the buffer mechanism is arranged, under the action of elastic potential energy, the motion trend is buffered, the problem that the service life of an oil cylinder is affected due to the fact that a piston collides with the wall of the oil cylinder when the piston reaches the limiting positions on the two sides of the oil cylinder is solved, stable working of the oil cylinder is facilitated, and the service life of the oil cylinder is prolonged during reverse working. And elastic potential energy in the compression spring can also play a role in assisting.

Description

Technical Field

[0001] The utility model relates to the field of cranes, in particular to a front horizontal oil cylinder suitable for cranes. Background Art

[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). The structural forms of hydraulic cylinders are diverse. According to the movement mode, they can be divided into linear reciprocating motion type and rotary swinging type; according to the situation of receiving hydraulic pressure, they can be divided into single-acting type and double-acting type. It has a simple structure and reliable operation. When using it to achieve reciprocating motion, the deceleration device can be eliminated, and there is no transmission gap and the movement is smooth. Therefore, it is widely used in the hydraulic systems of various machines.

[0003] In the prior art, for example, a front horizontal oil cylinder for a crane with Chinese patent number CN216618086U includes a flange, the center of the flange penetrates and is fixedly connected to a cylinder barrel, the flange penetrates and is provided with twelve evenly distributed screw holes, the left center position of the cylinder barrel penetrates and is threadedly connected to an oil inlet, a gasket is threadedly connected to the outer wall of the oil inlet, a filter is fixedly connected to the middle position of the inner wall of the oil inlet, a cavity is provided in the cylinder barrel, a piston is slidably connected to the cavity, and a horizontal rod is fixedly connected to the center position of the right side of the piston. In the utility model, twelve evenly distributed screw holes are penetrated and provided on the flange, and bolts are slidably connected to the twelve screw holes, which is convenient for workers to disassemble and assemble the device and improves the convenience of use. A filter is fixedly connected to the middle position of the inner wall of the oil inlet, and the filter is penetrated and provided with evenly dense filter holes, which can well remove or block impurities and prevent the original parts from being worn, and it is worth promoting vigorously.

[0004] However, although the prior art has many technical advantages, it has a disadvantage in that, during use, the above-mentioned front horizontal cylinder for a crane lacks a buffering and shock-absorbing mechanism. When the piston reaches the limit positions on both sides of the cylinder, it collides with the cylinder wall, thereby affecting the service life of the cylinder and being detrimental to the stability of the cylinder operation. Utility Model Content

[0005] In view of the deficiencies of the prior art, the technical solution adopted by the utility model to solve the technical problems is: a front horizontal oil cylinder suitable for a crane, comprising:

[0006] Bottom of the tank;

[0007] A cylinder barrel, the outer wall of which is fixedly connected to the inner wall of the cylinder bottom;

[0008] A cylinder head, the inner wall of which is fixedly connected to the outer wall of the cylinder barrel;

[0009] A piston, the outer wall of which is slidably connected to the inner wall of the cylinder;

[0010] A hydraulic rod, wherein one end of the hydraulic rod close to the piston is fixedly connected to the outer wall of the piston;

[0011] The front horizontal cylinder also includes:

[0012] A buffer mechanism, the buffer mechanism is used to protect the cylinder bottom and the cylinder head, and the buffer mechanism is located inside the cylinder barrel;

[0013] A fixing mechanism, the fixing mechanism is used to fix the cylinder bottom and the cylinder head, and the outer wall of the fixing mechanism is fixedly connected to the outer wall of the cylinder bottom;

[0014] The buffer mechanism comprises a compression spring, an end of the compression spring away from the piston is fixedly connected to an open gasket, an end of the compression spring close to the piston is fixedly connected to the outer wall of the piston, and the compression springs are symmetrically arranged on both sides of the piston.

[0015] Preferably, the inner wall of the open washer is slidably connected to the outer wall of the hydraulic rod, the outer wall of the open washer is in contact with the outer wall of the cylinder bottom, and the outer wall of the open washer is in contact with the outer wall of the cylinder head.

[0016] Preferably, the cylinder bottom includes a bottom block, the outer wall of the bottom block is fixedly connected to the first oil port, the inner wall of the bottom block is fixedly connected to the fixing rod, the inner wall of the bottom block is fixedly connected to the rubber pad, the inner wall of the bottom block is fixedly connected to the sealing ring, and the inner wall of the bottom block is rotatably connected to the maintenance plug.

[0017] Preferably, the inner wall of the bottom block is fixedly connected to the outer wall of the cylinder, the interior of the first oil port is connected to the interior of the cylinder, the outer wall of the rubber pad is fixedly connected to one end of the cylinder close to the bottom block, and the inner wall of the sealing ring is in contact with the outer wall of the maintenance plug.

[0018] Preferably, the cylinder head includes a head block, the outer wall of the head block is fixedly connected to a second oil port, the inner wall of the head block is fixedly connected to the outer wall of the cylinder barrel, the interior of the second oil port is connected to the interior of the cylinder barrel, the outer wall of the head block is fixedly connected to a guide sleeve, and the inner wall of the guide sleeve is slidably connected to the outer wall of the hydraulic rod.

[0019] Preferably, a rubber ring is fixedly connected to the outer wall of the piston, and the outer wall of the rubber ring is slidably connected to the inner wall of the cylinder.

[0020] Preferably, one end of the hydraulic rod away from the piston is fixedly connected to a connecting piece, and the inner wall of the connecting piece is fixedly connected to a connecting rod.

[0021] Preferably, the fixing mechanism includes a fixing plate, a top of which is fixedly connected to a positioning block, and the positioning block is symmetrically arranged along the central axis of the fixing plate, and the inner wall of the fixing plate is fixedly connected to a fixing piece by a positioning screw, and the fixing piece is symmetrically arranged along the central axis of the fixing plate.

[0022] Preferably, the top of the fixing plate is fixedly connected to the outer walls of the bottom block and the head block, the outer wall of the positioning block is fixedly connected to the outer walls of the bottom block and the head block, and the outer wall of the fixing member is fixedly connected to the outer walls of the bottom block and the head block.

[0023] The beneficial effects of the utility model are as follows:

[0024] 1. The utility model sets a buffer mechanism. Before the piston reaches the limit position, the open gasket contacts the bottom block or the head block first. At this time, the compression spring is compressed. Under the action of elastic potential energy, it plays a buffering role on the movement trend, solves the problem that when the piston reaches the limit position on both sides of the cylinder, it collides with the cylinder wall, thereby affecting the service life of the cylinder. It is beneficial to the stability of the cylinder operation. At the same time, the elastic potential energy in the compression spring can also play a boosting role when working in the reverse direction.

[0025] 2. The utility model sets a fixing mechanism, and fixes and connects the holes evenly opened on the fixing plate with the corresponding holes on the crane, limits the positions of the cylinder bottom and the cylinder head respectively through two positioning blocks, and then further fixes the bottom block and the head block on the fixing plate through positioning screws and fixings, thereby enhancing the stability of the front horizontal oil cylinder, making it easier to meet the vertical supporting force, thereby further improving the service life of the front horizontal oil cylinder.

[0026] 2. The utility model further improves the overall sealing of the front horizontal oil cylinder by arranging rubber pads, sealing rings, rubber rings and guide sleeves, reduces the possibility of oil cylinder leakage, and further ensures the further operation of the oil cylinder. At the same time, by arranging a maintenance plug, it is convenient to inspect and maintain the oil cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is the front view of the utility model;

[0028] Figure 2 It is a partial cross-sectional exploded view of the utility model;

[0029] Figure 3 It is a partial structural schematic diagram of the utility model;

[0030] Figure 4 It is a structural schematic diagram of the cylinder bottom of the utility model.

[0031] In the figure: 1. cylinder bottom; 11. bottom block; 12. first oil port; 13. fixing rod; 14. rubber pad; 15. sealing ring; 16. maintenance plug; 2. cylinder barrel; 3. cylinder head; 31. head block; 32. second oil port; 33. guide sleeve; 4. piston; 41. rubber ring; 5. hydraulic rod; 51. connecting piece; 52. connecting rod; 6. buffer mechanism; 61. compression spring; 62. open washer; 7. fixing mechanism; 71. fixing plate; 72. positioning block; 73. positioning screw; 74. fixing piece. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific purposes.

[0033] Example: See Figure 1 - Figure 4 The utility model provides a technical solution: a front horizontal oil cylinder suitable for a crane, comprising:

[0034] Cylinder bottom 1;

[0035] Cylinder barrel 2, the outer wall of cylinder barrel 2 is fixedly connected to the inner wall of cylinder bottom 1;

[0036] The cylinder head 3, the inner wall of the cylinder head 3 is fixedly connected to the outer wall of the cylinder barrel 2;

[0037] A piston 4, the outer wall of the piston 4 is slidably connected to the inner wall of the cylinder 2;

[0038] A hydraulic rod 5, one end of the hydraulic rod 5 close to the piston 4 is fixedly connected to the outer wall of the piston 4;

[0039] The front horizontal cylinder also includes:

[0040] The buffer mechanism 6 is used to protect the cylinder bottom 1 and the cylinder head 3, and the buffer mechanism 6 is located inside the cylinder barrel 2;

[0041] A fixing mechanism 7, the fixing mechanism 7 is used to fix the cylinder bottom 1 and the cylinder head 3, and the outer wall of the fixing mechanism 7 is fixedly connected to the outer wall of the cylinder bottom 1;

[0042] The buffer mechanism 6 includes a compression spring 61 , an end of the compression spring 61 away from the piston 4 is fixedly connected to an open gasket 62 , an end of the compression spring 61 close to the piston 4 is fixedly connected to the outer wall of the piston 4 , and the compression spring 61 is symmetrically arranged on both sides of the piston 4 .

[0043] The inner wall of the open washer 62 is slidably connected to the outer wall of the hydraulic rod 5 , the outer wall of the open washer 62 is in contact with the outer wall of the cylinder bottom 1 , and the outer wall of the open washer 62 is in contact with the outer wall of the cylinder head 3 .

[0044] The cylinder bottom 1 includes a bottom block 11, the outer wall of the bottom block 11 is fixedly connected with a first oil port 12, the inner wall of the bottom block 11 is fixedly connected with a fixing rod 13, the inner wall of the bottom block 11 is fixedly connected with a rubber pad 14, the inner wall of the bottom block 11 is fixedly connected with a sealing ring 15, and the inner wall of the bottom block 11 is rotatably connected with a maintenance plug 16.

[0045] The inner wall of the bottom block 11 is fixedly connected to the outer wall of the cylinder 2, the interior of the first oil port 12 is connected to the interior of the cylinder 2, the outer wall of the rubber pad 14 is fixedly connected to one end of the cylinder 2 close to the bottom block 11, and the inner wall of the sealing ring 15 is in contact with the outer wall of the maintenance plug 16.

[0046] The cylinder head 3 includes a head block 31, the outer wall of the head block 31 is fixedly connected to the second oil port 32, the inner wall of the head block 31 is fixedly connected to the outer wall of the cylinder barrel 2, the interior of the second oil port 32 is connected to the interior of the cylinder barrel 2, the outer wall of the head block 31 is fixedly connected to the guide sleeve 33, and the inner wall of the guide sleeve 33 is slidably connected to the outer wall of the hydraulic rod 5.

[0047] A rubber ring 41 is fixedly connected to the outer wall of the piston 4 , and the outer wall of the rubber ring 41 is slidably connected to the inner wall of the cylinder 2 .

[0048] One end of the hydraulic rod 5 away from the piston 4 is fixedly connected to a connecting piece 51 , and an inner wall of the connecting piece 51 is fixedly connected to a connecting rod 52 .

[0049] The fixing mechanism 7 includes a fixing plate 71, the top of which is fixedly connected to a positioning block 72, and the positioning block 72 is symmetrically arranged along the central axis of the fixing plate 71, and the inner wall of the fixing plate 71 is fixedly connected to a fixing member 74 through a positioning screw 73, and the fixing member 74 is symmetrically arranged along the central axis of the fixing plate 71.

[0050] The top of the fixing plate 71 is fixedly connected to the outer walls of the bottom block 11 and the head block 31 , the outer wall of the positioning block 72 is fixedly connected to the outer walls of the bottom block 11 and the head block 31 , and the outer wall of the fixing member 74 is fixedly connected to the outer walls of the bottom block 11 and the head block 31 .

[0051] Working principle:

[0052] When in use, the device body is fixed to the crane by the fixing mechanism 7, and is fixedly connected to the corresponding holes on the crane through the holes evenly opened on the fixing plate 71. The positions of the cylinder bottom 1 and the cylinder head 3 are respectively limited by two positioning blocks 72, and then the bottom block 11 and the head block 31 are further fixed to the fixing plate 71 by positioning screws 73 and fixing parts 74.

[0053] The first oil port 12 and the second oil port 32 are inlet and outlet channels of the hydraulic oil. When the first oil port 12 is filled with oil and the second oil port 32 is discharged with oil, the hydraulic oil pushes the piston 4, thereby driving the hydraulic rod 5 to work outward. When the first oil port 12 is discharged with oil and the second oil port 32 is filled with oil, the hydraulic oil pushes the piston 4, thereby retracting the hydraulic rod 5. The rubber ring 41 plays a sealing role to prevent the hydraulic oil on both sides of the piston 4 from contacting. The end of the hydraulic rod 5 away from the piston 4 is fixedly connected to a connecting piece 51, and a connecting rod 52 is fixed on the connecting piece 51. The connecting piece 51 and the connecting rod 52 are used to connect the hydraulic rod 5 and the required parts. The rubber pad 14 strengthens the sealing between the cylinder barrel 2 and the bottom block 11. The sealing ring 15 strengthens the sealing between the maintenance plug 16 and the bottom block 11. Under the action of the threaded connection, the maintenance plug 16 can be screwed out to facilitate inspection and maintenance inside the cylinder. The guide sleeve 33 guides the movement of the hydraulic rod 5 and is provided with a sealing ring inside to enhance the sealing of the device. The fixing rod 13 connects the bottom block 11 and the head block 31, which enhances the stability of the overall structure of the cylinder.

[0054] During the movement of the hydraulic rod 5, by setting the buffer mechanism 6, before the piston 4 reaches the limit position, the open gasket 62 first contacts the bottom block 11 or the head block 31. At this time, the compression spring 61 is compressed. Under the action of elastic potential energy, it has a buffering effect on the movement trend. When working in the reverse direction, the elastic potential energy in the compression spring 61 can also play a boosting role.

[0055] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A front horizontal cylinder suitable for a crane, comprising: Cylinder bottom (1); A cylinder barrel (2), wherein the outer wall of the cylinder barrel (2) is fixedly connected to the inner wall of the cylinder bottom (1); A cylinder head (3), the inner wall of the cylinder head (3) being fixedly connected to the outer wall of the cylinder barrel (2); A piston (4), wherein the outer wall of the piston (4) is slidably connected to the inner wall of the cylinder (2); A hydraulic rod (5), wherein one end of the hydraulic rod (5) close to the piston (4) is fixedly connected to the outer wall of the piston (4); Characterized in that the front horizontal cylinder also includes: A buffer mechanism (6), the buffer mechanism (6) being used to protect the cylinder bottom (1) and the cylinder head (3), the buffer mechanism (6) being located inside the cylinder barrel (2); A fixing mechanism (7), the fixing mechanism (7) being used to fix the cylinder bottom (1) and the cylinder head (3), the outer wall of the fixing mechanism (7) being fixedly connected to the outer wall of the cylinder bottom (1); The buffer mechanism (6) comprises a compression spring (61), one end of the compression spring (61) away from the piston (4) is fixedly connected to an open gasket (62), one end of the compression spring (61) close to the piston (4) is fixedly connected to the outer wall of the piston (4), and the compression spring (61) is symmetrically arranged on both sides of the piston (4).

2. The front horizontal oil cylinder suitable for a crane according to claim 1, characterized in that: The inner wall of the open washer (62) is slidably connected to the outer wall of the hydraulic rod (5), the outer wall of the open washer (62) is in contact with the outer wall of the cylinder bottom (1), and the outer wall of the open washer (62) is in contact with the outer wall of the cylinder head (3).

3. The front horizontal oil cylinder suitable for a crane according to claim 1, characterized in that: The cylinder bottom (1) comprises a bottom block (11), the outer wall of the bottom block (11) is fixedly connected to a first oil port (12), the inner wall of the bottom block (11) is fixedly connected to a fixing rod (13), the inner wall of the bottom block (11) is fixedly connected to a rubber pad (14), the inner wall of the bottom block (11) is fixedly connected to a sealing ring (15), and the inner wall of the bottom block (11) is rotatably connected to a maintenance plug (16).

4. The front horizontal oil cylinder suitable for a crane according to claim 3, characterized in that: The inner wall of the bottom block (11) is fixedly connected to the outer wall of the cylinder (2), the interior of the first oil port (12) is connected to the interior of the cylinder (2), the outer wall of the rubber pad (14) is fixedly connected to an end of the cylinder (2) close to the bottom block (11), and the inner wall of the sealing ring (15) is in contact with the outer wall of the maintenance plug (16).

5. The front horizontal oil cylinder suitable for a crane according to claim 1, characterized in that: The cylinder head (3) comprises a head block (31), the outer wall of the head block (31) is fixedly connected to a second oil port (32), the inner wall of the head block (31) is fixedly connected to the outer wall of the cylinder barrel (2), the interior of the second oil port (32) is connected to the interior of the cylinder barrel (2), the outer wall of the head block (31) is fixedly connected to a guide sleeve (33), and the inner wall of the guide sleeve (33) is slidably connected to the outer wall of the hydraulic rod (5).

6. The front horizontal oil cylinder suitable for a crane according to claim 1, characterized in that: The outer wall of the piston (4) is fixedly connected to a rubber ring (41), and the outer wall of the rubber ring (41) is slidably connected to the inner wall of the cylinder (2).

7. The front horizontal oil cylinder suitable for a crane according to claim 1, characterized in that: One end of the hydraulic rod (5) away from the piston (4) is fixedly connected to a connecting piece (51), and the inner wall of the connecting piece (51) is fixedly connected to a connecting rod (52).

8. The front horizontal oil cylinder suitable for a crane according to claim 1, characterized in that: The fixing mechanism (7) comprises a fixing plate (71), a top of the fixing plate (71) being fixedly connected to a positioning block (72), and the positioning block (72) being symmetrically arranged along the central axis of the fixing plate (71), and an inner wall of the fixing plate (71) being fixedly connected to a fixing member (74) via a positioning screw (73), and the fixing member (74) being symmetrically arranged along the central axis of the fixing plate (71).

9. The front horizontal oil cylinder suitable for a crane according to claim 8, characterized in that: The top of the fixing plate (71) is fixedly connected to the outer walls of the bottom block (11) and the head block (31), the outer wall of the positioning block (72) is fixedly connected to the outer walls of the bottom block (11) and the head block (31), and the outer wall of the fixing member (74) is fixedly connected to the outer walls of the bottom block (11) and the head block (31).

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