Hydraulic oil cylinder with guide mechanism

Abstract

The utility model relates to the technical field of hydraulic oil cylinders, and discloses a hydraulic oil cylinder with a guide mechanism, which comprises a cylinder body, the telescopic rod is arranged in the cylinder body, and a guide mechanism is arranged in the cylinder body; the guide mechanism comprises a first guide part which comprises a movable piston. A guide piston at the left end of a guide rod is matched with a guide groove, so that the telescopic rod is conveniently guided when moving, the telescopic rod is prevented from loosening when the telescopic rod extends too long, and meanwhile, a limiting sliding sleeve arranged on the surface of the telescopic rod in a sleeving mode is matched with a sealing sliding sleeve, so that the telescopic rod is conveniently secondarily guided when moving; a supporting effect is achieved while guiding, the telescopic rod can be effectively prevented from loosening, the using effect is not affected, and therefore the using efficiency of the hydraulic oil cylinder is improved; and a movable piston arranged at the left end of the telescopic rod is matched with a sealing ring, so that the movable piston can be sealed when moving, and the oil leakage phenomenon is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic oil cylinders, in particular to a hydraulic oil cylinder with a guide mechanism. Background Art

[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion. It has a simple structure and reliable operation. When it is used to achieve reciprocating motion, the reduction 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. The output force of the hydraulic cylinder is proportional to the effective area of ​​the piston and the pressure difference on both sides; the hydraulic cylinder is basically composed of a cylinder barrel and a cylinder head, a piston and a piston rod, a sealing device, a buffer device and an exhaust device. The buffer device and the exhaust device depend on the specific application scenario, and other devices are indispensable.

[0003] The Chinese patent provides a hydraulic oil cylinder with high buffering performance, the publication number is CN205578404U, including a cylinder barrel and a cylinder head, a piston is arranged in the cylinder barrel and the cylinder head, a piston rod is arranged on the piston, an upper oil port and a lower oil port of the oil cylinder are arranged on the side wall of the cylinder barrel, a first oil pipe is arranged on the upper oil port of the oil cylinder, a second oil pipe is arranged on the lower oil port of the oil cylinder, a valve body is arranged on the first oil pipe and the second oil pipe, a cavity is arranged in the valve body, a valve core is arranged in the cavity, a handle is arranged on the valve body, a third oil pipe is arranged on the second oil pipe, a first baffle is arranged near one end of the hydraulic oil cylinder in the third oil pipe, an opening is arranged on the baffle, a second baffle is arranged at the opening, a spring is arranged on the left side of the second baffle, a throttle plate is arranged at one end of the spring away from the second baffle, and a through hole is arranged on the throttle plate. The beneficial effect of the utility model is that the utility model improves the buffering performance of the piston rod when it is retracted to do work, and reduces the impact force of the piston on the cylinder body.

[0004] The device uses a piston rod to improve its buffering performance when it is retracted to do work, thereby reducing the impact force of the piston on the cylinder body. However, when the telescopic rod of the hydraulic cylinder is extended too long, it is prone to shaking, and the telescopic rod is unstable, resulting in a decrease in the pushing effect. Therefore, it is necessary to provide a hydraulic cylinder with a guide mechanism. Utility Model Content

[0005] The purpose of the utility model is to provide a hydraulic cylinder with a guide mechanism to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydraulic cylinder with a guide mechanism, comprising a cylinder body; a telescopic rod arranged inside the cylinder body, and a guide mechanism is arranged inside the cylinder body; the guide mechanism comprises a first guide part including a movable piston, the left side of the telescopic rod is fixedly connected to the right side of the movable piston, and the movable piston is arranged inside the cylinder body; a second guide part is fixedly arranged on the surface of the telescopic rod, and the second guide part comprises four guide rods, the four guide rods are arranged in the same way, the right end connecting surfaces of the four guide rods are fixedly connected to the right end surface of the telescopic rod, the left side of the guide rod is provided with a guide piston, and the right side of the guide piston is fixedly connected to the left side of the guide rod.

[0007] Preferably, a sealing ring is provided on the surface of the movable piston, the inner wall of the sealing ring is fixedly connected to the surface of the movable piston, the surface of the sealing ring is sealingly and slidingly connected to the inner wall of the cylinder body, and the sealing ring is made of polyurethane rubber.

[0008] Preferably, a limiting sleeve is provided on the surface of the telescopic rod, the inner wall of the limiting sleeve is fixedly connected to the surface of the telescopic rod, a through hole is opened on the right side of the cylinder body, a sealing sleeve is provided on the inner wall of the through hole, and the inner wall of the sealing sleeve is slidably connected to the surface of the limiting sleeve.

[0009] Preferably, a guide groove is provided on the right side of the cylinder body, a guide piston is provided on the left side of the guide rod, the right side of the guide piston is fixedly connected to the left side of the guide rod, and the surface of the guide piston is slidably connected to the inner wall of the guide groove.

[0010] Preferably, a through groove is opened on the right side of the cylinder body, a sliding sleeve is arranged on the inner wall of the through groove, the surface of the sliding sleeve is fixedly connected to the inner wall of the through groove, and the inner wall of the sliding sleeve is slidably connected to the surface of the guide rod.

[0011] Preferably, a connecting block is provided on the left side of the cylinder body, and the right side of the connecting block is fixedly connected to the right side of the cylinder body. A connecting seat is provided on the left side of the connecting block, and the right side of the connecting seat is fixedly connected to the left side of the connecting block.

[0012] Preferably, an oil outlet pipe is provided at the rear of the cylinder body, and the front of the oil outlet pipe passes through the rear of the cylinder body; an oil inlet pipe is provided at the rear of the cylinder body, and the front of the oil inlet pipe passes through the rear of the cylinder body.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1) The hydraulic oil cylinder with a guide mechanism facilitates guiding the telescopic rod when it moves by cooperating between the guide piston at the left end of the guide rod and the guide groove, thereby preventing the telescopic rod from loosening when the telescopic rod is extended too long. At the same time, by cooperating between the limiting sleeve and the sealing sleeve sleeve sleeved on the surface of the telescopic rod, secondary guiding is facilitated when the telescopic rod moves. The guiding also plays a supporting role, which can effectively prevent the telescopic rod from loosening and affecting the use effect, thereby improving the use efficiency of the hydraulic oil cylinder.

[0015] 2) The hydraulic oil cylinder with a guide mechanism can seal the movable piston when it moves through the cooperation between the movable piston and the sealing ring arranged at the left end of the telescopic rod to prevent oil leakage.

[0016] 3) The hydraulic oil cylinder with a guide mechanism connects the oil inlet pipe connected to the rear end of the cylinder body with the external oil pipe, so that the cylinder body can use the external hydraulic oil to push out the telescopic rod, so that the telescopic rod can be extended and retracted. By connecting the oil outlet pipe with the external oil pipe, the oil brought out when the telescopic rod moves can be recovered for reuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the overall three-dimensional right side structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the overall front cross-sectional structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the overall left side cross-sectional structure of the utility model;

[0021] Figure 5 It is a schematic diagram of the overall rear structure of the utility model.

[0022] In the figure: 1 cylinder body, 2 connecting block, 3 connecting seat, 4 telescopic rod, 5 guide mechanism, 501 moving piston, 502 sealing ring, 503 limiting sleeve, 504 sealing sleeve, 505 guide rod, 506 guide piston, 507 sleeve, 6 oil outlet pipe, 7 oil inlet pipe. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1

[0025] Combination Figure 1-Figure 5 A hydraulic oil cylinder with a guide mechanism comprises a cylinder body 1; a telescopic rod 4 arranged inside the cylinder body 1; a connecting block 2 is arranged on the left side of the cylinder body 1, and the right side of the connecting block 2 is fixedly connected to the right side of the cylinder body 1; a connecting seat 3 is arranged on the left side of the connecting block 2, and the right side of the connecting seat 3 is fixedly connected to the left side of the connecting block 2; an oil outlet pipe 6 is arranged at the rear of the cylinder body 1, and the front side of the oil outlet pipe 6 passes through the rear side of the cylinder body 1; an oil inlet pipe 7 is arranged at the rear of the cylinder body 1, and the front side of the oil inlet pipe 7 passes through the rear side of the cylinder body 1; a guide mechanism 5 is arranged inside the cylinder body 1; the guide mechanism 5 The first guide part includes a movable piston 501, the left side of the telescopic rod 4 is fixedly connected to the right side of the movable piston 501, and the movable piston 501 is arranged inside the cylinder body 1; a second guide part is fixedly arranged on the surface of the telescopic rod 4, and the second guide part includes four guide rods 505, and the four guide rods 505 are arranged in the same way. The right end connecting surfaces of the four guide rods 505 are fixedly connected to the right end surface of the telescopic rod 4, and a guide piston 506 is arranged on the left side of the guide rod 505, and the right side of the guide piston 506 is fixedly connected to the left side of the guide rod 505.

[0026] Furthermore: by connecting the oil inlet pipe 7 connected to the rear end of the cylinder body 1 with the external oil pipe, the telescopic rod 4 can be pushed out by the external hydraulic oil inside the cylinder body 1, so that the telescopic rod 4 can be extended and retracted. By connecting the oil outlet pipe 6 with the external oil pipe, the oil brought out when the telescopic rod 4 moves can be recovered for reuse.

[0027] Embodiment 2

[0028] See also Figure 3-Figure 5 , and on the basis of the first embodiment, it is further obtained that a sealing ring 502 is provided on the surface of the movable piston 501, the inner wall of the sealing ring 502 is fixedly connected to the surface of the movable piston 501, the surface of the sealing ring 502 is sealingly and slidingly connected to the inner wall of the cylinder body 1, the sealing ring 502 is made of polyurethane rubber, a limiting sleeve 503 is provided on the surface of the telescopic rod 4, the inner wall of the limiting sleeve 503 is fixedly connected to the surface of the telescopic rod 4, a through hole is opened on the right side of the cylinder body 1, and a sealing sleeve 504 is provided on the inner wall of the through hole The inner wall of the sealing sleeve 504 is slidably connected with the surface of the limiting sleeve 503, a guide groove is provided on the right side of the cylinder body 1, a guide piston 506 is provided on the left side of the guide rod 505, the right side of the guide piston 506 is fixedly connected with the left side of the guide rod 505, the surface of the guide piston 506 is slidably connected with the inner wall of the guide groove, a through groove is provided on the right side of the cylinder body 1, a sleeve 507 is provided on the inner wall of the through groove, the surface of the sleeve 507 is fixedly connected with the inner wall of the through groove, and the inner wall of the sleeve 507 is slidably connected with the surface of the guide rod 505.

[0029] Furthermore: by the cooperation between the guide piston 506 at the left end of the guide rod 505 and the guide groove, it is convenient to guide the telescopic rod 4 when it moves, and prevent the telescopic rod 4 from loosening when the telescopic rod 4 is extended too long. At the same time, by the cooperation between the limiting sleeve 503 and the sealing sleeve 504 sleeved on the surface of the telescopic rod 4, it is convenient to perform secondary guidance when the telescopic rod 4 moves, and while guiding, it also plays a supporting role, which can effectively prevent the telescopic rod 4 from loosening and affecting the use effect, thereby improving the use efficiency of the hydraulic cylinder; by the cooperation between the moving piston 501 and the sealing ring 502 set at the left end of the telescopic rod 4, the moving piston 501 can be sealed when moving to prevent oil leakage.

[0030] During the actual operation, firstly, the oil inlet pipe 7 connected to the rear end of the cylinder body 1 is connected to the external oil pipe, and the telescopic rod 4 is pushed out by using the external hydraulic oil. During the movement of the telescopic rod 4, the guide rod 505 fixedly connected to the right end surface of the telescopic rod 4 will move with the movement of the telescopic rod 4. The cooperation between the guide piston 506 at the left end of the guide rod 505 and the guide groove makes it easy to guide the telescopic rod 4 when it moves, and prevent the telescopic rod 4 from loosening when it is extended too long. At the same time, the cooperation between the limiting sleeve 503 and the sealing sleeve 504 sleeved on the surface of the telescopic rod 4 makes it easy to guide the telescopic rod 4 for a second time when it moves, and the guiding also plays a supporting role, which can effectively prevent the telescopic rod 4 from loosening and affecting the use effect. The cooperation between the moving piston 501 and the sealing ring 502 set at the left end of the telescopic rod 4 can seal the moving piston 501 when it moves to prevent oil leakage.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic cylinder with a guide mechanism, comprising a cylinder body (1); a telescopic rod (4) arranged inside the cylinder body (1), characterized in that: A guide mechanism (5) is provided inside the cylinder body (1); The guide mechanism (5) comprises a first guide portion including a movable piston (501), the left side of the telescopic rod (4) is fixedly connected to the right side of the movable piston (501), and the movable piston (501) is arranged inside the cylinder body (1); a second guide portion is fixedly arranged on the surface of the telescopic rod (4), and the second guide portion comprises four guide rods (505), the four guide rods (505) are arranged in the same manner, and the right end connecting surfaces of the four guide rods (505) are fixedly connected to the right end surface of the telescopic rod (4); a guide piston (506) is arranged on the left side of the guide rod (505), and the right side of the guide piston (506) is fixedly connected to the left side of the guide rod (505).

2. A hydraulic cylinder with a guide mechanism according to claim 1, characterized in that: The surface of the movable piston (501) is provided with a sealing ring (502), the inner wall of the sealing ring (502) is fixedly connected to the surface of the movable piston (501), the surface of the sealing ring (502) is sealingly and slidably connected to the inner wall of the cylinder body (1), and the sealing ring (502) is made of polyurethane rubber.

3. The hydraulic cylinder with a guide mechanism according to claim 1, characterized in that: The surface of the telescopic rod (4) is provided with a limiting sleeve (503), the inner wall of the limiting sleeve (503) is fixedly connected to the surface of the telescopic rod (4), a through hole is opened on the right side of the cylinder body (1), a sealing sleeve (504) is provided on the inner wall of the through hole, and the inner wall of the sealing sleeve (504) is slidably connected to the surface of the limiting sleeve (503).

4. The hydraulic cylinder with a guide mechanism according to claim 1, characterized in that: A guide groove is provided on the right side of the cylinder body (1), a guide piston (506) is provided on the left side of the guide rod (505), the right side of the guide piston (506) is fixedly connected to the left side of the guide rod (505), and the surface of the guide piston (506) is slidably connected to the inner wall of the guide groove.

5. The hydraulic cylinder with a guide mechanism according to claim 4, characterized in that: A through groove is provided on the right side of the cylinder body (1), and a sliding sleeve (507) is provided on the inner wall of the through groove. The surface of the sliding sleeve (507) is fixedly connected to the inner wall of the through groove, and the inner wall of the sliding sleeve (507) is slidably connected to the surface of the guide rod (505).

6. The hydraulic cylinder with a guide mechanism according to claim 1, characterized in that: A connecting block (2) is arranged on the left side of the cylinder body (1), and the right side of the connecting block (2) is fixedly connected to the right side of the cylinder body (1); a connecting seat (3) is arranged on the left side of the connecting block (2), and the right side of the connecting seat (3) is fixedly connected to the left side of the connecting block (2).

7. The hydraulic cylinder with a guide mechanism according to claim 1, characterized in that: An oil outlet pipe (6) is arranged at the rear of the cylinder body (1), and the front of the oil outlet pipe (6) passes through the rear of the cylinder body (1). An oil inlet pipe (7) is arranged at the rear of the cylinder body (1), and the front of the oil inlet pipe (7) passes through the rear of the cylinder body (1).

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