Power-assisted buffering device for side door of cab

Abstract

The utility model discloses a cab side door power-assisted buffering device, and belongs to the technical field of power-assisted buffering devices, the cab side door power-assisted buffering device comprises a buffering air bag, a connecting plate and a hydraulic cylinder, one end of the buffering air bag is detachably connected with the connecting plate, and the end, away from the buffering air bag, of the connecting plate is fixedly connected with a push rod of the hydraulic cylinder; a cylinder body of the hydraulic cylinder is fixedly connected with the cab side door, the buffering air bag faces one side of the door frame and is located at the corner, close to the ground, of the cab side door, and the face, close to the connecting plate, of the buffering air bag is located on the surface of the cab side door. The buffering effect is achieved through the buffering air bag, the distance between the buffering air bag and the cab side door is adjusted through extension and shortening of the push rod of the hydraulic cylinder, so that the device adapts to different cab side doors, and the problem that in the cab side door closing process, impact is likely to be caused by powerful door closing is solved. And potential damage is caused to a side door and a door frame of the cab.

Description

Technical Field

[0001] The present application relates to the technical field of power-assisted buffer devices, and in particular to a power-assisted buffer device for a cab side door. Background Art

[0002] The statements in this section merely provide background technical information related to the present application and do not necessarily constitute prior art.

[0003] The opening and closing of the cab side door is not only a routine action of the driver's daily work, but also directly related to the driver's convenience and work safety. The traditional bulldozer cab side door lacks an effective buffer mechanism, and the contact between the cab side door and the door frame often produces a large impact, which not only causes potential damage to the cab side door and door frame, but also produces harsh noise, causing discomfort to the driver.

[0004] Patent Publication (Announcement) No.: CN115110864A discloses a cab side door power-assistance buffer mechanism and cab, which enables the cab side door to stably contact the buffer ball when opening through the buffer assembly through the piston rod and the buffer ball, thereby playing a buffering role. At the same time, the power-assist assembly can adjust the elastic force of the spring as needed through the design of the spring assembly and the adjustment stud to provide appropriate door closing assistance.

[0005] However, in this process, the purpose is to prevent the cab side door from colliding with the frame after opening 180 degrees from the side, but it cannot solve the problem of collision between the cab side door and the door frame when closing the cab side door, and the problem of door opening assistance when opening the door. Therefore, a cab side door assistant buffer device is needed to reduce the impact and protect the cab side door when closing the door, and to assist in opening the door when opening the door, so as to facilitate the opening of the cab side door. Utility Model Content

[0006] In order to solve the above problems, the present application proposes a power-assisted buffer device for a cab side door.

[0007] The purpose of the present application is to provide a cab side door power-assisting buffer device, which achieves a buffering effect through a buffer airbag, and adjusts the distance between the buffer airbag and the cab side door through the extension and shortening of the push rod of the hydraulic cylinder, so as to adapt to different cab side doors and solve the problem that the cab side door is easily impacted by closing the door with great force during the closing process, causing potential damage to the cab side door and door frame.

[0008] In order to achieve the above purpose, this application adopts the following technical solutions:

[0009] A power-assisting buffer device for a cab side door comprises: a buffer airbag, a connecting plate, and a hydraulic cylinder. One end of the buffer airbag is detachably connected to the connecting plate, and the end of the connecting plate away from the buffer airbag is fixedly connected to a push rod of the hydraulic cylinder. The cylinder body of the hydraulic cylinder is fixedly connected to the cab side door. The buffer airbag faces the side of the door frame. The buffer airbag is located at a corner of the cab side door close to the ground, and a side of the buffer airbag close to the connecting plate is located on the surface of the cab side door.

[0010] Furthermore, the buffer airbag is a semi-cylinder, the arc surface of the semi-cylinder faces the door frame, and the buffer airbag is bonded to the connecting plate by Velcro.

[0011] Furthermore, the hydraulic cylinder is embedded in the side door of the cab.

[0012] Furthermore, the hydraulic cylinder is provided with a first opening, a second opening, a third opening and a fourth opening, the first opening and the second opening are liquid inlets, the third opening and the fourth opening are liquid outlets, the first opening and the third opening are axially symmetrical with respect to the center line of the push rod, the second opening and the fourth opening are axially symmetrical with respect to the center line of the push rod, the first opening and the third opening are located at one end of the hydraulic cylinder close to the push rod, and the second opening and the fourth opening are located at one end of the hydraulic cylinder away from the push rod.

[0013] Furthermore, it also includes a hydraulic pump and a liquid storage tank, the first opening and the second opening are connected to the liquid outlet of the hydraulic pump through a pipeline, the third opening and the fourth opening are connected to the liquid storage tank through a pipeline, and the liquid storage tank is connected to the hydraulic pump through a pipeline.

[0014] Furthermore, the first opening, the second opening, the third opening and the fourth opening are provided with stop valves.

[0015] Furthermore, a rubber telescopic tube is provided between the connecting plate and the hydraulic cylinder.

[0016] Compared with the prior art, the beneficial effects of this application are:

[0017] 1. The present application installs a buffer airbag on the corner of the cab side door, so that when the cab side door is close to the door frame, the buffer airbag can play a buffering effect, and the distance between the buffer airbag and the cab side door can be adjusted by extending and shortening the push rod of the hydraulic cylinder to adapt to different cab side doors, thereby solving the problem that when the cab side door is closed, strong slamming may easily cause impact and cause potential damage to the cab side door and door frame.

[0018] 2. The present application controls the extension and shortening of the push rod of the hydraulic cylinder through the four openings of the hydraulic cylinder, so that during the door opening process, the push rod of the hydraulic cylinder is extended to assist the opening of the side door of the cab. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A perspective view of the present application;

[0020] Figure 2 This is a schematic diagram of the structure of this application;

[0021] Figure 3 Schematic diagram of the installation on the cab side door for this application;

[0022] Among them: 1. hydraulic cylinder, 2. rubber expansion tube, 3. connecting plate, 4. cushioning airbag, 5. push rod, 6. stop valve, 7. first opening, 8. second opening, 9. third opening, 10. fourth opening, 11. hydraulic pump, 12. fluid storage tank, 13. pipeline, 14. cab side door. DETAILED DESCRIPTION

[0023] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Example 1

[0025] A cab side door power-assisted buffer device, such as Figure 1-3 As shown, it comprises: a buffer airbag 4, a connecting plate 3, and a hydraulic cylinder 1. The buffer airbag 4 is semi-cylindrical, one end of the buffer airbag 4 is detachably connected to the connecting plate 3, the connecting plate 3 is made of a rubber plate, the end of the connecting plate 3 away from the buffer airbag 4 is fixedly connected to the push rod 5 of the hydraulic cylinder 1, the cylinder body of the hydraulic cylinder 1 is fixedly connected to the cab side door 14, the buffer airbag 4 faces the side of the door frame, the buffer airbag 4 is located at a corner of the cab side door 14 close to the ground, and the side of the buffer airbag 4 close to the connecting plate 3 is located on the surface of the cab side door 14. In this way, when closing the door, the buffer airbag 4 at the corner of the cab side door 14 is used for buffering to prevent the cab side door 14 from violently contacting the door frame, and the position of the buffer airbag 4 is adjusted by the extension and shortening of the push rod 5 of the hydraulic cylinder 1, so that the buffer airbag 4 located at the cab side door 14 and the door frame cooperate with each other to prevent the buffer airbag 4 from being exposed too much or too little, which affects the buffering of closing the door.

[0026] like Figure 1 As shown, the buffer airbag 4 is a semi-cylinder, and the arc surface of the semi-cylinder faces the door frame. The buffer airbag 4 and the connecting plate 3 are bonded by Velcro, so that the buffer airbag 4 can be easily replaced after aging.

[0027] like Figure 3 As shown, the hydraulic cylinder 1 is embedded in the cab side door 14 and does not affect the closing of the cab side door 14 .

[0028] like Figure 2As shown, the hydraulic cylinder 1 is provided with a first opening 7, a second opening 8, a third opening 9 and a fourth opening 10, the first opening 7 and the second opening 8 are liquid inlets, the third opening 9 and the fourth opening 10 are liquid outlets, the first opening 7 and the third opening 9 are axially symmetrical with respect to the center line of the push rod 5, the second opening 8 and the fourth opening 10 are axially symmetrical with respect to the center line of the push rod 5, the first opening 7 and the third opening 9 are located at one end of the hydraulic cylinder 1 close to the push rod 5, and the second opening 8 and the fourth opening 10 are located at one end of the hydraulic cylinder 1 away from the push rod 5.

[0029] like Figure 2 As shown, it also includes a hydraulic pump 11 and a liquid storage tank 12, the first opening 7 and the second opening 8 are connected to the liquid outlet of the hydraulic pump 11 through a pipeline 13, the third opening 9 and the fourth opening 10 are connected to the liquid storage tank 12 through a pipeline 13, and the liquid storage tank 12 is connected to the hydraulic pump 11 through a pipeline 13.

[0030] like Figure 2 As shown, the first opening 7, the second opening 8, the third opening 9 and the fourth opening 10 are provided with a stop valve 6, and the opening is controlled by the stop valve 6, so that the hydraulic oil in and out of the opening can be controlled. When the stop valve 6 of the first opening 7 and the third opening 9 is opened, and the stop valve 6 of the second opening 8 and the fourth opening 10 is closed, the push rod 5 contracts, driving the buffer airbag 4 to move toward the direction of the hydraulic cylinder 1, so that the buffer airbag 4 contracts toward the cab side door 14, so that the distance between the buffer airbag 4 and the cab side door 14 can be adjusted. In the process of opening the door, the stop valve 6 of the first opening 7 and the third opening 9 is closed, and the stop valve 6 of the second opening 8 and the fourth opening 10 is opened, so that the push rod 5 extends, driving the buffer airbag 4 to move toward the door frame, thereby pushing the cab side door 14 away from the door frame, so that it can play a boosting effect in the process of opening the door, making it convenient to open the door.

[0031] like Figure 1 As shown, a rubber telescopic tube 2 is further provided between the connecting plate and the hydraulic cylinder 1 to prevent dust and prevent debris from affecting the normal operation of the hydraulic cylinder 1.

[0032] In the technical solution of the present application, a power-assisting buffer device is provided on the cab side door 14, which can provide a buffering effect when closing the door, thereby preventing the cab side door 14 from hitting the door frame with great force and causing vibrations to affect the equipment in the cab and the locking device on the cab side door 14.

[0033] By installing a buffer airbag 4 on the corner of the cab side door 14, the buffer airbag 4 can play a buffering effect when the cab side door 14 is close to the door frame, and in this process, the distance that the buffer airbag 4 protrudes from the cab side door 14 can be adjusted at any time through the extension and contraction of the push rod 5 of the hydraulic cylinder 1, so that the buffering distance can be better adjusted to adapt to the buffering effect of different positions, and when opening the door, through the start-up of the hydraulic cylinder 1, the push rod 5 extends, driving the connecting plate 3 and the buffer airbag 4 to be pushed outward, playing an effect of assisting in opening the door, so that the opening of the cab side door 14 is convenient.

[0034] Although the above describes the specific implementation methods of the present application in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present application. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present application, various modifications or variations that can be made by technical personnel in this field without creative work are still within the scope of protection of the present application.

Claims

1. A cab side door power-assisted buffer device, characterized in that: include: A cushioning airbag, a connecting plate, and a hydraulic cylinder, wherein one end of the cushioning airbag is detachably connected to the connecting plate, the end of the connecting plate away from the cushioning airbag is fixedly connected to the push rod of the hydraulic cylinder, the cylinder body of the hydraulic cylinder is fixedly connected to the side door of the cab, the cushioning airbag faces the side of the door frame, the cushioning airbag is located at a corner of the side door of the cab close to the ground, and the side of the cushioning airbag close to the connecting plate is located on the surface of the side door of the cab.

2. A cab side door power-assisted buffer device as claimed in claim 1, characterized in that: The buffer airbag is a semi-cylinder, the arc surface of the semi-cylinder faces the door frame, and the buffer airbag is bonded to the connecting plate by Velcro.

3. The driver's cab side door power-assisted buffer device according to claim 1, characterized in that: The hydraulic cylinder is embedded in the side door of the cab.

4. The driver's cab side door power-assisted buffer device according to claim 1, characterized in that: The hydraulic cylinder is provided with a first opening, a second opening, a third opening and a fourth opening, the first opening and the second opening are liquid inlets, the third opening and the fourth opening are liquid outlets, the first opening and the third opening are axially symmetrical with respect to the center line of the push rod, the second opening and the fourth opening are axially symmetrical with respect to the center line of the push rod, the first opening and the third opening are located at one end of the hydraulic cylinder close to the push rod, and the second opening and the fourth opening are located at one end of the hydraulic cylinder away from the push rod.

5. The driver's cab side door power-assisted buffer device as claimed in claim 4, characterized in that: It also includes a hydraulic pump and a liquid storage tank, the first opening and the second opening are connected to the liquid outlet of the hydraulic pump through a pipeline, the third opening and the fourth opening are connected to the liquid storage tank through a pipeline, and the liquid storage tank is connected to the hydraulic pump through a pipeline.

6. A cab side door power-assisted buffer device as claimed in claim 5, characterized in that: Stop valves are provided on the first opening, the second opening, the third opening and the fourth opening.

7. The driver's cab side door power-assisted buffer device according to claim 5, characterized in that: A rubber telescopic tube is also provided between the connecting plate and the hydraulic cylinder.

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