Stroke-adjustable dumper hydraulic oil cylinder

Abstract

The stroke-adjustable dumper hydraulic oil cylinder comprises a mounting base, a cylinder body is fixedly installed at the upper end of the mounting base, empty grooves are formed in the left side and the right side of the interior of the mounting base, hydraulic rods are fixedly installed in the empty grooves, and an adjusting plate is fixedly installed at the upper ends of the hydraulic rods; a first oil inlet pipe is fixedly mounted at the middle end in the mounting seat, a second oil inlet pipe is slidably connected to the upper end of the first oil inlet pipe, a buffer plate is fixedly mounted at the upper end of the outer side of the second oil inlet pipe, and a sleeve is fixedly mounted at the upper end of the adjusting plate. The hydraulic rod is matched with the adjusting plate, the distance between the piston and the adjusting plate can be conveniently adjusted, the stroke of the hydraulic oil cylinder can be adjusted, meanwhile, the arc-shaped steel plate is matched with the sleeve, rigid contact between the piston and the buffer plate is reduced, damage to the piston caused by long-time rigid collision is avoided, and the service life of the piston is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic cylinder technical field especially relates to a self -discharging vehicle hydraulic cylinder of adjustable stroke. BACKGROUND

[0002] Hydraulic cylinder is the hydraulic energy conversion mechanical energy, does linear reciprocating motion (or swing motion) hydraulic actuator, it simple structure, reliable work, when using it to realize reciprocating motion, can dispense with the speed reducer, and there is no transmission gap, and the movement is stable, therefore in the hydraulic system of various machinery, get wide application, self -discharging vehicle interior also uses hydraulic cylinder.

[0003] The stroke adjustable oil cylinder of application No. CN202222788172.2 drives the inner cylinder and the limiting block to move back and forth inside the outer cylinder through the third oil port and the oil inlet and outlet of the fourth oil cylinder, achieves the purpose of changing the distance between the limiting block and the rear cover, thereby changing the moving distance of the piston, the change of the moving distance of the piston realizes the change of the stroke of the oil cylinder, and ensures that the oil cylinder can adapt to different scenes.

[0004] Compared with the stroke adjustable oil cylinder of the above file, the piston is always in rigid contact with the inside of the oil cylinder, which can easily cause damage to the piston after long-term use, thereby affecting the use of the hydraulic cylinder. UTILITY MODEL CONTENTS

[0005] The utility model discloses a stroke adjustable self -discharging vehicle hydraulic cylinder, aims at solving the technical problem that the piston is always in rigid contact with the inside of the oil cylinder, which can easily cause damage to the piston after long-term use, thereby affecting the use of the hydraulic cylinder.

[0006] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A stroke adjustable self -discharging vehicle hydraulic cylinder, including the mounting seat, the mounting seat upper end fixed installation has the cylinder body, the mounting seat inside left and right sides are set up with the empty slot, the empty slot inside fixed installation has the hydraulic rod, the hydraulic rod upper end fixed installation has the adjusting plate, the mounting seat inside middle end fixed installation has the first oil inlet pipe, the first oil inlet pipe upper end sliding connection has the second oil inlet pipe, the second oil inlet pipe outer side upper end fixed installation has the buffer plate, the adjusting plate upper end fixed installation has the sleeve, the sleeve inside sliding connection has the sliding block, the sliding block with sleeve between be provided with arc steel sheet, the cylinder body inside upper end sliding connection has the piston, the piston upper end fixed installation has the piston rod, the sleeve outer side sleeve has the spring.

[0008] Through setting the cooperation of the hydraulic rod and the adjusting plate, the distance between the piston and the adjusting plate can be adjusted according to the actual work requirement, so that the stroke of the hydraulic cylinder is adjusted, meanwhile, the cooperation of the arc-shaped steel plate and the sleeve reduces the rigid contact between the piston and the buffer plate, avoids the piston damage caused by long-time rigid collision, and improves the service life of the piston.

[0009] In a preferred scheme, the cylinder body is internally fixedly installed with a heat-conducting plate, the cylinder body internally located at the side away from the central axis is provided with a heat dissipation groove, the mounting seat is provided with a liquid inlet groove at the left side, the cylinder body is fixedly installed with a top cover at the upper end, the mounting seat is threadedly connected with a fixing rod at the upper end of the four corners, the cylinder body is fixedly installed with a fastening ring at the outer side, the fastening ring is fixedly installed with a heat dissipation plate at the outer side, and the top cover is provided with a liquid outlet groove at the front end.

[0010] Through the cooperation of the heat-conducting plate and the heat dissipation groove, the heat dissipation of the cylinder body is facilitated, the overheating of the cylinder body is avoided, and the service life of the cylinder body is improved; meanwhile, the cooperation of the fastening ring and the heat dissipation plate not only improves the structural strength of the cylinder body, but also increases the contact area of the cylinder body and air, so that the heat dissipation capacity of the cylinder body is improved.

[0011] As can be seen from the above, the adjustable stroke hydraulic cylinder of the self-unloading vehicle provided by the utility model realizes the adjustment of the stroke of the hydraulic cylinder through the cooperation of the hydraulic rod and the adjusting plate, reduces the rigid contact between the piston and the buffer plate through the cooperation of the arc-shaped steel plate and the sleeve, avoids the piston damage caused by long-time rigid collision, and improves the service life of the piston. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 The utility model provides an overall structure schematic view.

[0013] Figure 2 The utility model provides an overall cross section structure schematic view.

[0014] Figure 3 The utility model provides an adjusting plate and buffer plate three-dimensional structure schematic view.

[0015] Figure 4 The utility model provides a sleeve cross section structure schematic view.

[0016] Figure 5 The utility model provides a first oil inlet pipe and second oil inlet pipe cross section structure schematic view.

[0017] In the drawing: 1, mounting seat; 2, cylinder body; 3, empty slot; 4, hydraulic rod; 5, adjusting plate; 6, first oil inlet pipe; 7, second oil inlet pipe; 8, buffer plate; 9, sleeve; 10, sliding block; 11, arc steel plate; 12, piston; 13, piston rod; 14, heat-conducting plate; 15, heat dissipation groove; 16, liquid inlet groove; 17, top cover; 18, fixed rod; 19, fastening ring; 20, heat dissipation plate; 21, liquid outlet groove; 22, spring. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0019] The utility model discloses a kind of adjustable stroke's dump truck hydraulic oil cylinder, mainly apply piston to be in rigid contact with oil cylinder inside, after long time use, it is easy to cause piston damage, to affect the scene of use of hydraulic oil cylinder.

[0020] With reference to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 And Figure 5 A kind of adjustable stroke's dump truck hydraulic oil cylinder, including mounting seat 1, cylinder body 2 is fixedly installed on mounting seat 1 upper end, empty slot 3 is set in left and right sides inside mounting seat 1, hydraulic rod 4 is fixedly installed in empty slot 3 inside, adjusting plate 5 is fixedly installed on the upper end of hydraulic rod 4, first oil inlet pipe 6 is fixedly installed in the middle end inside mounting seat 1, second oil inlet pipe 7 is slidably connected on the upper end of first oil inlet pipe 6, buffer plate 8 is fixedly installed on the upper end of the outer side of second oil inlet pipe 7, sleeve 9 is fixedly installed on the upper end of adjusting plate 5, sliding block 10 is slidably connected in sleeve 9 inside, arc steel plate 11 is arranged between sliding block 10 and sleeve 9, piston 12 is slidably connected in the upper end of cylinder body 2 inside, piston rod 13 is fixedly installed on the upper end of piston 12, spring 22 is sleeved on the outer side of sleeve 9, second oil inlet pipe 7 is slidably penetrated in the middle end of adjusting plate 5, sliding block 10 upper end is weldedly connected with buffer plate 8.

[0021] When the stroke of the hydraulic cylinder needs to be adjusted, the hydraulic rod 4 in the empty slot 3 is started to make the hydraulic rod 4 rise, thereby driving the adjusting plate 5 to rise, the second oil inlet pipe 7 penetrates the adjusting plate 5, and the adjusting plate 5 slides synchronously outside the second oil inlet pipe 7. After the adjusting plate 5 rises, the buffer plate 8 also rises, thereby driving the second oil inlet pipe 7 to slide and rise in the first oil inlet pipe 6, reducing the distance between the piston 12 and the adjusting plate 5, thereby adjusting the stroke of the hydraulic cylinder, facilitating adjustment of the distance between the piston 12 and the adjusting plate 5 according to actual work needs, thereby realizing adjustment of the stroke of the hydraulic cylinder. When the piston 12 reciprocates, the piston 12 is pushed by the hydraulic oil to drive the piston rod 13 to work, and then the piston 12 slides back into the cylinder body 2. When the piston 12 contacts the buffer plate 8, the buffer plate 8 is subjected to a certain impact force. Since the lower end of the buffer plate 80 is connected with the sliding block 10, the sliding block 10 slides into the sleeve 9, thereby extruding the arc-shaped steel plate 11, and the arc-shaped steel plate 11 deforms to a certain extent. In this process, a certain impact force is absorbed. When the sliding block 10 slides into the sleeve 9, the spring 22 is also impacted to be compressed, thereby absorbing part of the force, reducing the rigid contact between the piston 12 and the buffer plate 8, avoiding long-time rigid collision to cause damage to the piston 12, and improving the service life of the piston 12.

[0022] With reference to Figure 1 and Figure 2 In a preferred embodiment, the cylinder body 2 is internally fixedly installed with a heat-conducting plate 14, a heat dissipation groove 15 is formed in the cylinder body 2 on the side away from the central axis of the heat-conducting plate 14, a liquid inlet groove 16 is formed in the left side of the mounting base 1, a top cover 17 is fixedly installed on the upper end of the cylinder body 2, fixed rods 18 are threadedly connected to the four corners of the upper end of the mounting base 1, a fastening ring 19 is fixedly installed on the outer side of the cylinder body 2, a heat dissipation plate 20 is fixedly installed on the outer side of the fastening ring 19, and a liquid outlet groove 21 is formed in the front end of the top cover 17.

[0023] In this embodiment, when the piston 12 reciprocates in the cylinder body 2, a certain amount of heat is generated. The heat-conducting plate 14 in the cylinder body 2 quickly conducts the heat generated by the cylinder body 2 to itself, and then the cooling liquid is introduced into the liquid inlet groove 16. The cooling liquid flows into the heat dissipation groove 15, absorbs the heat on the heat-conducting plate 14, and then flows upward through the spiral heat dissipation groove 15, and then flows out through the liquid outlet groove 21 in the top cover 17. In this process, the heat on the cylinder body 2 and the heat-conducting plate 14 is absorbed, facilitating heat dissipation of the cylinder body 2, avoiding overheating of the cylinder body 2, and improving the service life of the cylinder body 2. The fastening ring 19 is connected with the fixed rods 18, and the fastening ring 19 is attached to the outer side of the cylinder body 2, which not only improves the structural strength of the cylinder body 2, but also conducts the heat of the cylinder body 2 to the fastening ring 19, and then to the heat dissipation plate 20, thereby increasing the contact area with the air and improving the heat dissipation capacity of the cylinder body 2.

[0024] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto. The replacement can be a replacement of part of the structure, device, method step, or a complete technical solution. According to the technical solution and the inventive concept of the present application, equivalent replacement or change should be covered in the protection scope of the present application.

Claims

1. An adjustable stroke hydraulic cylinder for a dump truck, comprising a mounting base (1), characterized in that, The upper end of the mounting base (1) is fixedly mounted with a cylinder body (2). The mounting base (1) has a slot (3) on the left and right sides inside. The slot (3) is fixedly mounted with a hydraulic rod (4). The upper end of the hydraulic rod (4) is fixedly mounted with an adjusting plate (5). The middle of the mounting base (1) is fixedly mounted with a first oil inlet pipe (6). The upper end of the first oil inlet pipe (6) is slidably connected with a second oil inlet pipe (7). The upper end of the outer side of the second oil inlet pipe (7) is fixedly mounted with a buffer plate (8). The upper end of the adjusting plate (5) is fixedly mounted with a sleeve (9). The sleeve (9) is slidably connected with a slider (10). An arc-shaped steel plate (11) is provided between the slider (10) and the sleeve (9). The upper end of the cylinder body (2) is slidably connected with a piston (12). The upper end of the piston (12) is fixedly mounted with a piston rod (13). The outer side of the sleeve (9) is sleeved with a spring (22).

2. The adjustable stroke hydraulic cylinder for a dump truck according to claim 1, characterized in that, A heat-conducting plate (14) is fixedly installed inside the cylinder (2), and a heat dissipation groove (15) is provided inside the cylinder (2) on the side of the heat-conducting plate (14) away from the central axis.

3. The adjustable stroke hydraulic cylinder for a dump truck according to claim 2, characterized in that, The mounting base (1) has a liquid inlet groove (16) on the left side, and the cylinder body (2) has a top cover (17) fixedly installed on the upper end.

4. The adjustable stroke hydraulic cylinder for a dump truck according to claim 3, characterized in that, The mounting base (1) has a fixed rod (18) threaded at the four corners of its upper end, and a fastening ring (19) is fixedly installed on the outside of the cylinder body (2).

5. The adjustable stroke hydraulic cylinder for a dump truck according to claim 4, characterized in that, A heat sink plate (20) is fixedly installed on the outside of the fastening ring (19), and a liquid outlet groove (21) is opened at the front end of the top cover (17).

6. An adjustable stroke hydraulic cylinder for a dump truck according to any one of claims 1 or 5, characterized in that, The second oil inlet pipe (7) slides through the middle of the adjusting plate (5), and the upper end of the slider (10) is welded to the buffer plate (8).

Images