Impact-resistant hydraulic damper

Abstract

The utility model discloses an impact-resistant hydraulic damper, and relates to the technical field of hydraulic dampers. The impact-resistant hydraulic damper comprises a hydraulic damper body and a piston rod arranged on the inner wall of the hydraulic damper body in a sliding mode, and mounting lugs are arranged at the top end of the piston rod and the bottom end of the hydraulic damper body. And a connecting assembly. According to the utility model, through the arrangement of the connecting assembly, when the mounting lug needs to be disassembled, the limiting cover can be pulled out of the mounting lug after the positioning column is driven to be separated from the positioning groove, and meanwhile, when a new mounting lug is mounted, the mounting lug can be inserted into the inserting groove in the fixed block through the inserting block, and the rotating block is reversely rotated; and the rotating block rotates to drive the two sliding plates to move towards the middle at the same time, so that the positioning column is driven to be inserted into the positioning groove in the inserting block, rapid and effective fixing of the mounting lug is achieved, and the defect that in the prior art, a lifting lug at the end of the piston rod cannot be rapidly and conveniently replaced is effectively overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic dampers, in particular to an impact-resistant hydraulic damper. Background Art

[0002] A hydraulic damper is a hydraulic feed speed control device that can freely adjust the cylinder feed speed from low speed to high speed within the desired range. An existing patent for a protective hydraulic damper, patent publication number CN219840963U includes a housing, a piston and a plug rod, the piston sliding seal is arranged in the housing, the plug rod is fixed on the piston, the piston divides the space in the housing into a unique rod chamber and a rodless chamber, and also includes a first oil pipe, a second oil pipe and an electric switch valve, the first oil pipe and the second oil pipe are both installed on the housing, and the first oil pipe is in a connected state with the rod chamber, the second oil pipe is in a connected state with the rodless chamber, the first oil pipe and the second oil pipe are connected to the electric switch valve, the first oil pipe, the second oil pipe and the electric switch valve are arranged between the rod chamber and the rodless chamber, the electric switch valve is used to control the on-off of the oil circuit between the rod chamber and the rodless chamber, and the piston is locked or opened by the on-off of the oil circuit, which has stronger adaptability.

[0003] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: when the lug at the end of the piston rod of the hydraulic damper proposed in the above-mentioned patent technology is damaged or broken during long-term use, or during transportation, installation and disassembly, the entire hydraulic damper needs to be replaced, which increases the maintenance cost of the hydraulic damper. That is, the technical solution proposed in the above-mentioned patent technology has the defect that the lug at the end of the piston rod cannot be replaced quickly and conveniently.

[0004] So we proposed an impact-resistant hydraulic damper to solve the above problems. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides an impact-resistant hydraulic damper, which solves the defect in the prior art that the lifting lug at the end of the piston rod cannot be replaced quickly and conveniently.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: an impact-resistant hydraulic damper, comprising:

[0007] A hydraulic damper body and a piston rod slidably arranged on the inner wall of the hydraulic damper body, and mounting ears are arranged on the top end of the piston rod and the bottom end of the hydraulic damper body;

[0008] A connecting component, which is used to connect the two mounting ears to the piston rod and the hydraulic damper body respectively, the connecting component includes two fixed blocks, and the two fixed blocks are respectively welded and fixed to the top end of the piston rod and the bottom end of the hydraulic damper body, the surface of the fixed block is provided with a plug-in groove, and the surface of the mounting ear is fixed with a plug-in block adapted to the plug-in groove, the interior of the fixed block is provided with a U-shaped cavity, and the inner wall of the U-shaped cavity is rotatably provided with a bidirectional lead screw, the inner wall of the U-shaped cavity is slidably provided with two symmetrical slides, and the side surfaces of the two slides are provided with threaded holes threadedly connected to the outer surface of the bidirectional lead screw, three positioning columns are equidistantly fixed on the opposite surfaces of the two slides, the inner wall of the U-shaped cavity is provided with a through hole extending to the inside of the plug-in groove for the positioning column to pass through, and the surface of the plug-in block is provided with a positioning groove adapted to the positioning column.

[0009] Preferably, two symmetrical limiting blocks are fixedly provided at the end of the plug-in block, and the inner wall of the plug-in slot is provided with limiting slots matched with the two limiting blocks.

[0010] Preferably, a limiting rod is fixedly provided on the inner wall of the U-shaped cavity, and sliding holes for sliding the slides are provided on the surfaces of the two slides.

[0011] Preferably, the end of the bidirectional screw extends to the outer surface of the fixed block and is fixed with a rotating block for rotating the bidirectional screw. The surface of the fixed block is provided with a rotating groove for the rotating block to rotate, and the surface of the rotating block is provided with a hexagonal rotating groove for facilitating the use of an external hexagonal wrench to rotate the rotating block.

[0012] Preferably, the outer surface of the hydraulic damper body is provided with an impact-resistant component, and the impact-resistant component includes a first mounting plate fixed on the surface of the piston rod, and a second mounting plate and a third mounting plate respectively fixed on the outer surface of the hydraulic damper body, and the second mounting plate is located in the middle of the third mounting plate.

[0013] Preferably, a buffer spring is sleeved on the outer surface of the piston rod, and two ends of the buffer spring are fixedly connected to the surfaces of the first mounting plate and the second mounting plate respectively.

[0014] Preferably, a plurality of fixing cylinders are fixedly arranged in a circular array on the opposite surfaces of the second mounting plate and the third mounting plate, a telescopic rod is slidably arranged on the inner wall of the fixing cylinder, and one end of the telescopic rod away from the fixing cylinder is fixedly connected to the surface of the first mounting plate.

[0015] Preferably, a corrugated expansion tube is fixedly provided between the first mounting plate and the second mounting plate, and a rubber protective sleeve is fixedly provided between the second mounting plate and the third mounting plate. Beneficial Effects

[0016] The utility model provides an impact-resistant hydraulic damper. Compared with the prior art, it has the following beneficial effects:

[0017] The impact-resistant hydraulic damper, by providing a connection component, can drive the positioning column to be inserted into the positioning groove on the plug-in block, thereby realizing the rapid and effective fixation of the mounting ear, thereby effectively solving the defect of the prior art that the lifting ear at the end of the piston rod cannot be quickly and conveniently replaced. At the same time, by providing an impact-resistant component, the impact-resistant hydraulic damper can provide a certain buffering force for the movement of the piston rod under the action of the buffer spring during actual use, thereby making the hydraulic damper have impact-resistant performance. At the same time, the setting of the fixing cylinder and the rubber protective sleeve can effectively protect the hydraulic damper body from collisions that occur during the carrying, transportation or installation process, thereby avoiding damage to the hydraulic damper body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the connection component of the utility model.

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the fixing block of the utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the impact-resistant component of the utility model.

[0022] In the figure:

[0023] 100. Hydraulic damper body;

[0024] 200, piston rod;

[0025] 300, mounting ears;

[0026] 400, connecting assembly; 401, fixing block; 402, plug-in slot; 403, plug-in block; 404, U-shaped cavity; 405, bidirectional screw; 406, slide plate; 407, positioning column; 408, positioning slot; 409, limiting block; 4010, limiting slot; 4011, limiting rod; 4012, rotating block; 4013, hexagonal rotating slot;

[0027] 500, impact-resistant component; 501, first mounting plate; 502, second mounting plate; 503, third mounting plate; 504, buffer spring; 505, fixing tube; 506, telescopic rod; 507, corrugated telescopic tube; 508, rubber protective sleeve. DETAILED DESCRIPTION

[0028] 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.

[0029] See also Figure 1-4 The utility model provides a technical solution: an impact-resistant hydraulic damper, comprising:

[0030] A hydraulic damper body 100 and a piston rod 200 slidably disposed on the inner wall of the hydraulic damper body 100 , and mounting ears 300 are disposed at the top end of the piston rod 200 and the bottom end of the hydraulic damper body 100 ;

[0031] The connecting assembly 400 is used to connect the two mounting ears 300 to the piston rod 200 and the hydraulic damper body 100 respectively. The connecting assembly 400 includes two fixing blocks 401, and the two fixing blocks 401 are respectively welded and fixed to the top end of the piston rod 200 and the bottom end of the hydraulic damper body 100. The surface of the fixing block 401 is provided with a plug-in groove 402, and the surface of the mounting ear 300 is fixed with a plug-in block 403 adapted to the plug-in groove 402. The interior of the fixing block 401 is provided with a U-shaped cavity 404, and the U-shaped cavity A bidirectional lead screw 405 is rotatably provided on the inner wall of 404, and two symmetrical slides 406 are slidably provided on the inner wall of the U-shaped cavity 404, and the sides of the two slides 406 are provided with threaded holes threadedly connected to the outer surface of the bidirectional lead screw 405, and three positioning columns 407 are fixedly provided at equal distances on the opposite surfaces of the two slides 406, and the inner wall of the U-shaped cavity 404 is provided with a through hole extending to the inside of the plug-in slot 402 for the positioning column 407 to pass through, and the surface of the plug-in block 403 is provided with a positioning groove 408 matched with the positioning column 407.

[0032] Among them, the impact-resistant hydraulic damper, by providing a connecting assembly 400, when it is necessary to disassemble the mounting ear 300, the rotating block 4012 can be rotated by an external hexagonal wrench, and the rotation of the rotating block 4012 drives the two-way screw 405 to rotate, and the rotation of the two-way screw 405 drives the two slides 406 to move to both sides at the same time, thereby driving the positioning column 407 to disengage from the positioning groove 408, and then the mounting ear 300 can be pulled out. At the same time, when installing a new mounting ear 300, the mounting ear 300 can be inserted into the plug-in groove 402 on the fixed block 401 through the plug-in block 403, and the rotating block 4012 is rotated in the opposite direction. The rotation of the rotating block 4012 drives the two slides 406 to move toward the middle at the same time, thereby driving the positioning column 407 to insert into the positioning groove 408 on the plug-in block 403, thereby realizing rapid and effective fixation of the mounting ear 300, thereby effectively solving the defect in the prior art that the lifting ear at the end of the piston rod 200 cannot be quickly and conveniently replaced.

[0033] See also Figure 1 , Figure 3 Two symmetrical limit blocks 409 are fixedly provided at the end of the plug-in block 403, and the inner wall of the plug-in slot 402 is provided with a limit slot 4010 adapted to the two limit blocks 409. The setting of the limit block 409 can effectively limit the position of the plug-in block 403 after the plug-in block 403 is inserted into the plug-in slot 402.

[0034] See also Figure 1 , Figure 3 A limiting rod 4011 is fixedly disposed on the inner wall of the U-shaped cavity 404, and sliding holes for the sliding plates 406 to slide are provided on the surfaces of the two sliding plates 406. The setting of the limiting rod 4011 effectively ensures the stability of the sliding plates 406 during movement.

[0035] See also Figure 1 , Figure 3 The end of the bidirectional lead screw 405 extends to the outer surface of the fixed block 401 and is fixedly provided with a rotating block 4012 for rotating the bidirectional lead screw 405. The surface of the fixed block 401 is provided with a rotating groove for the rotating block 4012 to rotate, and the surface of the rotating block 4012 is provided with a hexagonal rotating groove 4013 for facilitating the use of an external hexagonal wrench to rotate the rotating block 4012. The bidirectional lead screw 405 can be quickly rotated by the external hexagonal wrench.

[0036] See also Figure 1 , Figure 3 The outer surface of the hydraulic damper body 100 is provided with an impact-resistant component 500, and the impact-resistant component 500 includes a first mounting plate 501 fixed on the surface of the piston rod 200, and a second mounting plate 502 and a third mounting plate 503 respectively fixed on the outer surface of the hydraulic damper body 100, and the second mounting plate 502 is located in the middle of the third mounting plate 503.

[0037] See also Figure 1 , Figure 4 A buffer spring 504 is sleeved on the outer surface of the piston rod 200, and both ends of the buffer spring 504 are fixedly connected to the surfaces of the first mounting plate 501 and the second mounting plate 502 respectively. The setting of the buffer spring 504 can effectively buffer the piston rod 200 when it moves.

[0038] See also Figure 1 , Figure 4 A plurality of fixed cylinders 505 are fixedly arranged in a circular array on the opposite surfaces of the second mounting plate 502 and the third mounting plate 503 , and a telescopic rod 506 is slidably arranged on the inner wall of the fixed cylinder 505 , and one end of the telescopic rod 506 away from the fixed cylinder 505 is fixedly connected to the surface of the first mounting plate 501 .

[0039] A bellows expansion tube 507 is fixedly disposed between the first mounting plate 501 and the second mounting plate 502 , and a rubber protective sleeve 508 is fixedly disposed between the second mounting plate 502 and the third mounting plate 503 .

[0040] Among them, the impact-resistant hydraulic damper is provided with an impact-resistant component 500, so that during actual use, the impact-resistant hydraulic damper can provide a certain buffering force for the movement of the piston rod 200 under the action of the buffer spring 504, so that the hydraulic damper has impact-resistant performance. At the same time, the setting of the bellows 507 can effectively protect the moving part between the piston rod 200 and the hydraulic damper body 100 to prevent dust from entering, and the setting of the fixed cylinder 505 and the rubber protective sleeve 508 can effectively protect the hydraulic damper body 100 from collisions that occur during carrying, transportation or installation, thereby avoiding damage to the hydraulic damper body 100.

[0041] During operation, when the mounting ear 300 needs to be disassembled, the rotating block 4012 can be rotated by an external hexagonal wrench. The rotation of the rotating block 4012 drives the bidirectional lead screw 405 to rotate. The rotation of the bidirectional lead screw 405 drives the two slide plates 406 to move to both sides at the same time, thereby driving the positioning column 407 to disengage from the positioning groove 408, and then the mounting ear 300 can be pulled out. At the same time, when installing a new mounting ear 300, the mounting ear 300 can be inserted into the plug-in groove 402 on the fixed block 401 through the plug-in block 403, and the rotating block 4012 is rotated in the opposite direction. The rotation of the rotating block 4012 drives the two slide plates 406 to move to the middle at the same time, thereby driving the positioning column 407 to insert into the plug-in block 403. The positioning groove 408 can realize the quick and effective fixation of the mounting ear 300. During actual use, the impact-resistant hydraulic damper can provide a certain buffering force for the movement of the piston rod 200 under the action of the buffer spring 504, so that the hydraulic damper has impact resistance. At the same time, the setting of the bellows 507 can effectively protect the moving part between the piston rod 200 and the hydraulic damper body 100 to avoid dust entry. Moreover, the setting of the fixing cylinder 505 and the rubber protective sleeve 508 can effectively protect the hydraulic damper body 100 from collisions during carrying, transportation or installation, thereby avoiding damage to the hydraulic damper body 100.

[0042] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. An impact-resistant hydraulic damper, characterized in that: include, A hydraulic damper body (100) and a piston rod (200) slidably arranged on the inner wall of the hydraulic damper body (100), and mounting ears (300) are arranged at the top end of the piston rod (200) and the bottom end of the hydraulic damper body (100); A connecting assembly (400) is used to connect two mounting ears (300) to a piston rod (200) and a hydraulic damper body (100), respectively. The connecting assembly (400) comprises two fixing blocks (401), and the two fixing blocks (401) are respectively welded and fixed to the top end of the piston rod (200) and the bottom end of the hydraulic damper body (100), the surface of the fixing block (401) is provided with a plug-in groove (402), and the surface of the mounting ear (300) is fixed with a plug-in block (403) adapted to the plug-in groove (402), the interior of the fixing block (401) is provided with a U-shaped cavity (404), and the U-shaped A bidirectional lead screw (405) is rotatably provided on the inner wall of the cavity (404), two symmetrical slide plates (406) are slidably provided on the inner wall of the U-shaped cavity (404), and the sides of the two slide plates (406) are provided with threaded holes threadedly connected to the outer surface of the bidirectional lead screw (405), and three positioning columns (407) are fixedly provided at equal distances on the opposite surfaces of the two slide plates (406), the inner wall of the U-shaped cavity (404) is provided with a through hole extending to the inside of the plug-in slot (402) for the positioning column (407) to pass through, and the surface of the plug-in block (403) is provided with a positioning groove (408) adapted to the positioning column (407).

2. The impact-resistant hydraulic damper according to claim 1, characterized in that: Two symmetrical limiting blocks (409) are fixedly provided at the end of the plug-in block (403), and a limiting groove (4010) matching the two limiting blocks (409) is opened on the inner wall of the plug-in slot (402).

3. The impact-resistant hydraulic damper according to claim 1, characterized in that: A limiting rod (4011) is fixedly provided on the inner wall of the U-shaped cavity (404), and sliding holes for the sliding plates (406) to slide are provided on the surfaces of the two sliding plates (406).

4. The impact-resistant hydraulic damper according to claim 1, characterized in that: The end of the bidirectional lead screw (405) extends to the outer surface of the fixed block (401) and is fixedly provided with a rotating block (4012) for rotating the bidirectional lead screw (405); a rotating groove for the rotating block (4012) to rotate is provided on the surface of the fixed block (401); and a hexagonal rotating groove (4013) is provided on the surface of the rotating block (4012) for facilitating the use of an external hexagonal wrench to rotate the rotating block (4012).

5. The impact-resistant hydraulic damper according to claim 1, characterized in that: The outer surface of the hydraulic damper body (100) is provided with an impact-resistant component (500), and the impact-resistant component (500) comprises a first mounting plate (501) fixedly mounted on the surface of the piston rod (200), and a second mounting plate (502) and a third mounting plate (503) respectively fixedly mounted on the outer surface of the hydraulic damper body (100), and the second mounting plate (502) is located in the middle of the third mounting plate (503).

6. The impact-resistant hydraulic damper according to claim 5, characterized in that: The outer surface of the piston rod (200) is sleeved with a buffer spring (504), and two ends of the buffer spring (504) are respectively fixedly connected to the surfaces of the first mounting plate (501) and the second mounting plate (502).

7. The impact-resistant hydraulic damper according to claim 5, characterized in that: A plurality of fixed cylinders (505) are fixedly arranged in a circular array on the opposite surfaces of the second mounting plate (502) and the third mounting plate (503); a telescopic rod (506) is slidably arranged on the inner wall of the fixed cylinder (505); and one end of the telescopic rod (506) away from the fixed cylinder (505) is fixedly connected to the surface of the first mounting plate (501).

8. The impact-resistant hydraulic damper according to claim 5, characterized in that: A corrugated telescopic tube (507) is fixedly provided between the first mounting plate (501) and the second mounting plate (502), and a rubber protective sleeve (508) is fixedly provided between the second mounting plate (502) and the third mounting plate (503).

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