Hydraulic cylinder with throttling buffer device

Abstract

The utility model provides a hydraulic cylinder with a throttling buffer device, which relates to the technical field of hydraulic cylinders, and comprises a hydraulic cylinder body, a piston head and a piston rod are arranged on the inner wall of the hydraulic cylinder body in a sliding manner, the piston head is connected with the piston rod, two sides of the piston head are respectively provided with a sleeve, and the sleeve is connected with the piston rod. Main oil return ports are formed in the two sides of the inner wall of the hydraulic cylinder body correspondingly, auxiliary oil return ports are formed in the two sides, close to the main oil return ports, of the hydraulic cylinder body correspondingly, throttling valves are installed on end covers on the two sides of the surface of the hydraulic cylinder body correspondingly, a supporting device is arranged on the surface of the hydraulic cylinder body, and the supporting device supports and protects a piston rod through a supporting plate. When the hydraulic cylinder disclosed by the utility model is used, the piston rod can be protected to a certain extent and is not easy to deform and damage due to impact during use, so that the normal use of the piston rod is ensured, the use effect of the hydraulic cylinder is improved, and the service life of the hydraulic cylinder is also prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic cylinder technical field especially a hydraulic cylinder with throttling buffer device. BACKGROUND

[0002] Hydraulic cylinder is a kind of hydraulic actuator that is driven by hydraulic pressure to realize linear motion, and it is a kind of hydraulic actuating element that converts hydraulic energy into mechanical energy to realize linear reciprocating motion, and it is simple in structure and reliable in operation. When it is used to realize reciprocating motion, the speed reduction device can be omitted, and there is no transmission gap, and the movement is stable, so it is widely used in various mechanical hydraulic systems. In order to prolong the service life and reduce the energy consumption of the existing hydraulic cylinder, a throttling buffer device is arranged inside.

[0003] The piston of the traditional hydraulic cylinder will collide with the end faces on both sides during reciprocating motion, which will shorten the service life of the components. Therefore, the existing hydraulic cylinder is provided with two auxiliary return oil ports on the end faces on both sides of the inner wall, and a sleeve is installed on both sides of the piston head. When the piston head approaches the end face, the sleeve will be inserted into the main return oil port to block it, so that the hydraulic oil enters from the auxiliary return oil port, and the effect of buffering is achieved by reducing the flow area of the oil. At the same time, a throttle valve is arranged on the end cover on both sides (which can achieve the effect of adjusting the throttling speed), so as to protect the components of the hydraulic cylinder. However, in actual use, it is found that the piston rod of the hydraulic cylinder will be connected with the equipment components that need to be driven. When the piston rod reciprocates, it will be damaged to different degrees when subjected to strong impact, which will cause certain deformation damage and affect the normal use of the hydraulic cylinder. UTILITY MODEL CONTENTS

[0004] The technical problem to be solved by the utility model is that the piston rod of the hydraulic cylinder will be connected with the equipment components that need to be driven. When the piston rod reciprocates, it will be damaged to different degrees when subjected to strong impact, which will cause certain deformation damage and affect the normal use of the hydraulic cylinder.

[0005] The utility model adopts the technical scheme that a kind of hydraulic cylinder with throttling buffer device, including hydraulic cylinder body, the inner wall of hydraulic cylinder body is slidably provided with piston head and piston rod, and piston head and piston rod are connected, and the both sides of piston head are respectively installed with sleeve, the inner wall of hydraulic cylinder body is respectively provided with main return oil port on both sides, and the both sides close to main return oil port are respectively provided with auxiliary return oil port, the surface both sides end cover of hydraulic cylinder body is respectively installed with throttle valve, the surface of hydraulic cylinder body is provided with support device, wherein support device is supported and protected to piston rod by means of support plate.

[0006] The effect achieved by the above components is as follows: when the hydraulic cylinder is in use, the return oil port paths at both ends are connected to the corresponding oil pipes and installed and fixed. Then, the piston rod is connected to the corresponding equipment, and the support device is installed on the surface of the piston rod and the hydraulic cylinder body, thereby supporting and protecting the piston rod.

[0007] Preferably, the support device includes a welded assembly plate, which is snapped into a groove on the arc surface of the piston rod. The surface of the assembly plate is fitted with several support plates evenly distributed circumferentially by means of a rotating shaft. A reinforcing plate is fixedly connected to the inner wall of each support plate. Reinforcing plates, made of steel, are installed on both sides of the surfaces of the support plates. An assembly ring is fixedly connected to the arc surface of the hydraulic cylinder. The assembly ring has an I-shaped cross-section. A stabilizing ring is installed on the inner wall of the assembly ring. Several evenly distributed clamping plates are installed on the arc surface of the stabilizing ring, with each clamping plate in pairs, and the clamping plates in the same pair are respectively snapped onto both sides of the same support plate surface.

[0008] The effects achieved by the above components are as follows: when the hydraulic cylinder is in use, the piston rod can be protected to a certain extent, making it less likely to be deformed and damaged due to impact, thus ensuring the normal use of the piston rod, improving the performance of the hydraulic cylinder, and extending its service life.

[0009] Preferably, the support device further includes connecting plates installed on both sides of the support plate, and the connecting plates connect and fix adjacent support plates.

[0010] The effect achieved by the above components is that the welding and fixing of the connecting plates creates a certain connection between adjacent support plates, thereby increasing the strength of the support plates and better supporting and limiting the piston rod.

[0011] Preferably, the surface of the assembly ring is provided with a stabilizing component, wherein the stabilizing component limits and stabilizes the support plate.

[0012] The effect achieved by the above components is that by setting the stabilizing components, the support plate can better maintain its position and is less prone to displacement, thereby improving the support effect of the support device.

[0013] Preferably, the stabilizing component includes a plurality of positioning pins installed in the assembly ring, and a plurality of positioning holes are provided on the arc surface of the stabilizing ring, with the plurality of positioning pins respectively inserted into the plurality of positioning holes.

[0014] The effect achieved by the above components is that the stabilizing ring is more stably installed on the assembly ring through the insertion of the positioning pin and positioning hole, and is less prone to deflection, thereby ensuring the stability of the support plate and better fixing the position of the piston rod.

[0015] Preferably, the surface of the hydraulic cylinder body is provided with a protection device at the position of the piston rod, the protection device comprises a fixed plate sleeved on the circular surface of the piston rod, and a protection piece is arranged on the side of the fixed plate close to the hydraulic cylinder body, the protection piece is a rubber piece, the surface of the fixed plate is provided with a plurality of screws, and the fixed plate is connected and fixed with the surface of the hydraulic cylinder body through the screws.

[0016] The above-mentioned components achieve the effects that when the hydraulic cylinder body is used, the reciprocating movement of the piston rod better ensures the sealing property of the equipment, and the dust and impurities in the external environment are less likely to enter the internal part of the hydraulic cylinder body.

[0017] Preferably, the protection device further comprises a knob arranged on the screw, and the surface of the knob is provided with a plurality of anti-skid protrusions.

[0018] The above-mentioned components achieve the effects that the screw is more convenient and fast to use through the arrangement of the knob, so that the protection piece is conveniently disassembled and replaced, and the convenience of using the protection device is improved.

[0019] Preferably, the protection device further comprises an auxiliary pad sleeved on the piston rod, and the auxiliary pad is a sponge pad, and the auxiliary pad is arranged at the position where the protection plate and the fixed plate are close to each other.

[0020] The above-mentioned components achieve the effects that the fixed plate is more closely attached when contacting and extruding the protection piece through the arrangement of the auxiliary pad, so that the assembly stability of the protection piece is ensured, and the sealing effect of the hydraulic cylinder body is better improved.

[0021] The beneficial effects of the hydraulic cylinder are as follows:

[0022] When the hydraulic cylinder is used, the piston rod can be protected, is less likely to be damaged due to impact, the normal use of the piston rod is ensured, the use effect of the hydraulic cylinder is improved, and the service life of the hydraulic cylinder is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0023] The utility model is further described below in combination with the drawings and examples.

[0024] Figure 1 is the structure schematic diagram of the utility model;

[0025] Figure 2 is the structure schematic diagram of the support device of the utility model;

[0026] Figure 3 is the partial structure schematic diagram of the utility model Figure 2 ;

[0027] Figure 4 is the structure schematic diagram of the stabilizing assembly of the utility model.

[0028] Legend: 1, hydraulic cylinder body; 2, piston head; 3, piston rod; 4, sleeve; 5, main oil return port; 6, auxiliary oil return port; 7, supporting device; 71, assembly plate; 72, rotating shaft; 73, supporting plate; 74, reinforcing plate; 75, assembly ring; 76, stabilizing ring; 77, clamping plate; 78, reinforcing plate; 79, connecting plate; 8, stabilizing assembly; 81, positioning column; 82, positioning hole; 9, protection device; 91, fixed plate; 92, protection piece; 93, screw; 94, auxiliary pad; 95, knob; 10, throttle valve. DETAILED DESCRIPTION

[0029] The utility model will be explained in further detail in combination with the drawings. These drawings are all simplified schematic diagrams, and only illustrate the basic structure of the utility model in a schematic manner, so they only show the structure related to the utility model.

[0030] In the description of the utility model, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "connected" and "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0031] Figure 1 The utility model discloses a kind of hydraulic cylinders with throttling buffer device, including hydraulic cylinder body 1, the inner wall of hydraulic cylinder body 1 is slidably provided with piston head 2 and piston rod 3, and piston head 2 and piston rod 3 are connected, sleeve 4 is installed on the two sides of piston head 2 respectively, the inner wall of hydraulic cylinder body 1 is opened with main oil return port 5 on two sides respectively, and auxiliary oil return port 6 is opened on the two sides close to main oil return port 5 respectively, throttle valve 10 is installed on the surface of the two end covers of hydraulic cylinder body 1 respectively, supporting device 7 is arranged on the surface of hydraulic cylinder body 1, wherein supporting device 7 is supported and protected to piston rod 3 by supporting plate 73, protection device 9 is arranged on the position of the surface of hydraulic cylinder body 1 at piston rod 3.

[0032] Figure 1 、 Figure 2 and Figure 3The support device 7 shown includes a welded assembly plate 71, which is snapped into the groove of the arc surface of the piston rod 3. Several support plates 73, evenly distributed circumferentially, are mounted on the surface of the assembly plate 71 via a rotating shaft 72. Reinforcing plates 74 are fixedly connected to the inner walls of the support plates 73. Reinforcing plates 78, made of steel, are mounted on both sides of the surfaces of the support plates 73. An assembly ring 75, with an I-shaped cross-section, is fixedly connected to the arc surface of the hydraulic cylinder body 1. A stabilizing ring 76 is mounted on the inner wall of the assembly ring 75. Several evenly distributed clamping plates 77 are mounted on the arc surface of the stabilizing ring 76, arranged in pairs. The clamping plates 77 in the same pair are snapped onto both sides of the surface of the same support plate 73. When the hydraulic cylinder is in use, the return oil port paths at both ends are connected to the corresponding oil pipes and fixed in place. Then, the assembly plate 71 is snapped into the groove of the arc surface of the piston rod 3, and the assembly plate... 71. The assembly plate 71 is welded and formed, and several support plates 73 on the assembly plate 71 are rotated to make them vertical. At this time, the reinforcing plates 74 and strengthening plates 78 on the support plates 73 will further enhance the strength of the support plates 73 and maintain stability. Then, the assembly ring 75 is fixed to the surface of the hydraulic cylinder body 1, and the stabilizing ring 76 is welded and formed, and is snapped into the inner wall of the assembly ring 75 at the same time. At the same time, the two sides of the support plate 73 will be snapped into place by the two clamping plates 77 on the stabilizing ring 76. Finally, the piston rod 3 is connected to the corresponding equipment. When the piston rod 3 reciprocates, the support plate 73 will slide against the clamping plates 77 on the stabilizing ring 76 and support and protect the piston rod 3. At this time, when the hydraulic cylinder is in use, the piston rod 3 can be protected to a certain extent and is not easily deformed and damaged by impact during use. This ensures the normal use of the piston rod 3, improves the use effect of the hydraulic cylinder, and extends the service life of the hydraulic cylinder.

[0033] Figure 1 , Figure 2 and Figure 3The supporting device 7 shown also includes connecting plates 79 installed on both sides of the supporting plate 73, and the connecting plates 79 connect and fix adjacent supporting plates 73. The adjacent supporting plates 73 are fixed by welding of the connecting plates 79 to form a certain connecting effect, thereby increasing the use strength of the supporting plate 73, better supporting and limiting the piston rod 3, and the surface of the assembly ring 75 is provided with a stabilizing assembly 8. The stabilizing assembly 8 limits and stabilizes the supporting plate 73. The setting of the stabilizing assembly 8 makes the supporting plate 73 better maintain position stability and is not prone to deviation, thereby improving the supporting effect of the supporting device 7. The stabilizing assembly 8 includes a plurality of positioning columns 81 installed in the assembly ring 75. The stabilizing ring 76 has a plurality of positioning holes 82 formed on the arc surface thereof. The plurality of positioning columns 81 are respectively inserted into the plurality of positioning holes 82. The insertion of the positioning columns 81 and the positioning holes 82 makes the stabilizing ring 76 more stably installed on the assembly ring 75 and is not prone to deflection, thereby ensuring the position stability of the supporting plate 73 and better fixing the position of the piston rod 3.

[0034] Figure 1 and Figure 4 The supporting device 9 shown includes a fixed plate 91 installed on the arc surface of the piston rod 3. The fixed plate 91 is provided with a protection sheet 92 near the side of the hydraulic cylinder body 1. The protection sheet 92 is a rubber sheet. The surface of the fixed plate 91 has a plurality of screws 93. The fixed plate 91 is connected and fixed to the surface of the hydraulic cylinder body 1 through the screws 93. When protecting the movement port position of the piston rod 3 of the hydraulic cylinder body 1, the protection sheet 92 is first sleeved on the arc surface of the piston rod 3. Then the fixed plate 91 is sleeved on the piston rod 3. Finally, the screws 93 are installed on the fixed plate 91 and are screwed to the surface of the hydraulic cylinder body 1, so that the position of the fixed plate 91 is fixed. Thus, the position of the protection sheet 92 contacted and pressed by the fixed plate 91 is stable. When the hydraulic cylinder body 1 is in use, the reciprocating movement of the piston rod 3 better ensures the sealing of the equipment and prevents dust and impurities from entering the interior of the hydraulic cylinder body 1.

[0035] Figure 1 and Figure 4 The supporting device 9 shown also includes a knob 95 installed on the screw 93. The surface of the knob 95 is provided with a plurality of anti-slip protrusions. The setting of the knob 95 makes the screw 93 more convenient and fast in use, thereby facilitating the disassembly and replacement of the protection sheet 92 and improving the convenience of use of the supporting device 9. The supporting device 9 also includes an auxiliary pad 94 sleeved on the piston rod 3. The auxiliary pad 94 is a sponge pad. The auxiliary pad 94 is located at the position where the protection plate and the fixed plate 91 are close to each other. The setting of the auxiliary pad 94 makes the fixed plate 91 more closely contact and press the protection sheet 92 at the position, thereby ensuring the assembly stability of the protection sheet 92 and better strengthening the sealing effect of the hydraulic cylinder body 1.

[0036] Working principle: when the hydraulic cylinder is in use, the oil return port path at both ends is connected with the corresponding oil pipe, and is fixed and installed, then the assembly plate 71 is clamped in the groove of the arc surface of the piston rod 3, and the assembly plate 71 is welded and shaped, and several supporting plates 73 on the assembly plate 71 are turned to be vertical, at this time the reinforcing plate 74 and the reinforcing plate 78 on the supporting plate 73 further strengthen the use strength of the supporting plate 73, keep stable, then the assembly ring 75 is fixed on the surface of the hydraulic cylinder body 1, and the stabilizing ring 76 is formed by welding, and is clamped in the inner wall of the assembly ring 75 at the same time, and the two sides of the supporting plate 73 are clamped by the two clamping plates 77 on the stabilizing ring 76, finally the piston rod 3 is connected with the corresponding equipment for use, when the piston rod 3 reciprocates, the supporting plate 73 will slide with the clamping plate 77 on the stabilizing ring 76, and support and protect the piston rod 3, at this time the hydraulic cylinder can be protected when in use, and is not easy to be damaged due to impact, which ensures the normal use of the piston rod 3, improves the use effect of the hydraulic cylinder, and prolongs the service life of the hydraulic cylinder.

[0037] When the movement port position of the piston rod 3 of the hydraulic cylinder body 1 is protected, the protective sheet 92 is first sleeved on the arc surface of the piston rod 3, then the fixed plate 91 is sleeved on the piston rod 3, finally the screw 93 is installed on the fixed plate 91, and the screw 93 is screwed with the surface of the hydraulic cylinder body 1, so that the position of the fixed plate 91 is fixed, so that the position of the protective sheet 92 contacted and extruded by the fixed plate 91 is stable, at this time the hydraulic cylinder body 1 is in use, the piston rod 3 reciprocates, which better ensures the sealing of the equipment, and makes it difficult for dust and impurities in the outside to enter the inside of the hydraulic cylinder body 1.

[0038] Based on the above ideal embodiment of the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the contents in the specification, and must be determined according to the scope of claims.

Claims

1. Hydraulic cylinder with throttling buffer device, comprising a hydraulic cylinder body (1), characterized in that: The inner wall of the hydraulic cylinder (1) is slidably provided with a piston head (2) and a piston rod (3), and the piston head (2) and the piston rod (3) are connected. Sleeves (4) are installed on both sides of the piston head (2). The inner wall of the hydraulic cylinder (1) is provided with a main return oil port (5) on both sides, and an auxiliary return oil port (6) is provided on both sides near the main return oil port (5). Throttling valves (10) are installed on the end caps on both sides of the surface of the hydraulic cylinder (1). A support device (7) is provided on the surface of the hydraulic cylinder (1), wherein the support device (7) supports and protects the piston rod (3) with the help of a support plate (73).

2. A hydraulic cylinder with a throttling buffer device according to claim 1, characterized in that: The support device (7) includes a welded assembly plate (71), which is snapped into the groove of the arc surface of the piston rod (3). The surface of the assembly plate (71) is equipped with several support plates (73) that are evenly distributed circumferentially by means of a rotating shaft (72). The inner wall of the support plate (73) is fixedly connected with a reinforcing plate (74). The two sides of the surface of the several support plates (73) are respectively equipped with reinforcing plates (78), which are steel plates. The arc surface of the hydraulic cylinder (1) is fixedly connected with an assembly ring (75). The cross section of the assembly ring (75) is "I". The inner wall of the assembly ring (75) is equipped with a stabilizing ring (76). The arc surface of the stabilizing ring (76) is equipped with several evenly distributed clamping plates (77). The clamping plates (77) are in pairs, and the clamping plates (77) in the same group are respectively snapped onto the two sides of the surface of the same support plate (73).

3. A hydraulic cylinder with a throttling buffer device according to claim 2, characterized in that: The support device (7) also includes connecting plates (79) installed on both sides of the support plate (73), and the connecting plates (79) connect and fix the adjacent support plates (73).

4. A hydraulic cylinder with a throttling buffer device according to claim 2, characterized in that: The surface of the assembly ring (75) is provided with a stabilizing component (8), wherein the stabilizing component (8) limits and stabilizes the support plate (73).

5. A hydraulic cylinder having a relief buffer device according to claim 4, characterized in that: The stabilizing component (8) includes several positioning posts (81) installed in the assembly ring (75). Several positioning holes (82) are provided on the arc surface of the stabilizing ring (76). The positioning posts (81) are respectively inserted into the positioning holes (82).

6. A hydraulic cylinder with a relief buffer device according to claim 1, characterized in that: The surface of the hydraulic cylinder (1) is provided with a protective device (9) at the position of the piston rod (3). The protective device (9) includes a fixing plate (91) installed on the arc surface of the piston rod (3), and a protective plate (92) is installed on the side of the fixing plate (91) close to the hydraulic cylinder (1). The protective plate (92) is a rubber sheet. The surface of the fixing plate (91) has several screws (93), and the fixing plate (91) is connected and fixed to the surface of the hydraulic cylinder (1) by the screws (93).

7. A hydraulic cylinder having a relief buffer device according to claim 6, characterized in that: The protective device (9) also includes a knob (95) mounted on a screw (93), the surface of which is provided with a plurality of anti-slip protrusions.

8. A hydraulic cylinder with a throttling buffer device according to claim 6, characterized in that: The protective device (9) also includes an auxiliary pad (94) sleeved on the piston rod (3), and the auxiliary pad (94) is a sponge pad, which is located close to the protective plate and the fixing plate (91).

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