Endurance testing machine for opening and closing door

Abstract

The utility model discloses a door opening and closing durability testing machine which comprises a rack, clamping units are arranged on the two sides of the rack, a door opening unit is arranged at the front end of the rack, a push-pull unit is arranged at the front end of the rack, a refrigerator body is installed on the inner wall of the rack, and each clamping unit comprises an installation plate. The mounting plate is fixedly connected to the inner wall of the rack, an electric push rod I is mounted on one side of the mounting plate, a clamping plate is fixedly connected to the output end of the electric push rod I, and two guide rods are fixedly connected to one side of the clamping plate. The refrigerator body can be clamped through the clamping unit, and it is ensured that the refrigerator does not shake or move in the testing process; through cooperation of the door opening unit and the push-pull unit, stable opening of the door body can be achieved, the manual door opening action is simulated, and the pulling force in the door opening process is monitored.

Description

Technical Field

[0001] This utility model relates to the technical field of refrigerator testing equipment, and in particular to a door opening and closing durability testing machine. Background Technology

[0002] During use, the refrigerator door needs to be opened and closed frequently, and is subjected to tension, impact and friction for a long time, which can easily lead to problems such as door deformation, reduced sealing and hinge wear. Therefore, the door opening and closing durability is tested during the research and development and production of refrigerators.

[0003] Traditional door opening and closing durability tests often rely on manual simulation of door opening and closing, which is not only inefficient but also unable to accurately control the force, speed, and number of opening and closing operations, resulting in inconsistent and unreliable test results. In addition, manual testing makes it difficult to monitor the door's movement and stress in real time. Therefore, we need a door opening and closing durability testing machine. Utility Model Content

[0004] The purpose of this invention is to provide a door opening and closing durability testing machine. The clamping unit can clamp the refrigerator body to ensure that the refrigerator will not shake or shift during the test. Through the cooperation of the door opening unit and the push-pull unit, the door can be opened smoothly, simulating the manual door opening action and monitoring the pulling force during the door opening process.

[0005] To achieve the above objectives, a door opening and closing durability testing machine is provided, comprising: a frame, clamping units on both sides of the frame, a door opening unit at the front end of the frame, a push-pull unit at the front end of the frame, and a refrigerator body installed on the inner wall of the frame;

[0006] The clamping unit includes a mounting plate, which is fixedly connected to the inner wall of the frame. An electric push rod is mounted on one side of the mounting plate, and a clamping plate is fixedly connected to the output end of the electric push rod. Two guide rods are fixedly connected to one side of the clamping plate.

[0007] According to the aforementioned door opening and closing durability testing machine, the door opening unit includes a mounting base, which is fixedly connected to the front end of the frame. A reducer is installed on the inner wall of the mounting base, and a rotating shaft is fixedly connected to the output end of the reducer. A swing arm is fixedly connected to the outer wall of the rotating shaft. A support rod is fixedly connected to one side of the swing arm, and a turntable is rotatably connected to one end of the support rod via a rotating rod. A tension sensor is installed on one side of the swing arm.

[0008] According to the aforementioned door opening and closing durability testing machine, the push-pull unit includes a push-pull frame, an electric push rod II is installed on one side of the push-pull frame, a connecting block is fixedly connected to the output end of the electric push rod II, a support rod II is fixedly connected to one side of the connecting block, a turntable II is rotatably connected to one end of the support rod II via a rotating rod, and a tension sensor II is installed on one side of the connecting block.

[0009] According to the aforementioned door opening and closing durability testing machine, the outer side walls of both turntable one and turntable two are equipped with buffer pads, which are made of rubber material.

[0010] According to the aforementioned door opening and closing durability testing machine, the two guide rods are located on both sides of the electric push rod one, and both guide rods pass through the mounting plate and are slidably connected thereto.

[0011] According to the aforementioned door opening and closing durability testing machine, a tilt displacement sensor is installed on the door of the refrigerator body.

[0012] According to the aforementioned door opening and closing durability testing machine, a controller is provided on one side of the frame, and the controller is electrically connected to electric push rod one, reducer, electric push rod two, tension sensor one, tension sensor two and tilt displacement sensor.

[0013] This utility model has the following beneficial effects:

[0014] 1. Compared with existing technologies, by using an electric push rod to move the clamping plate along the guide rod, the refrigerator body can be firmly clamped, ensuring that the refrigerator will not shake or shift during the test.

[0015] 2. Compared with existing technologies, the method uses a speed reducer to drive the rotating shaft to rotate, which in turn drives the swing arm to swing, thus achieving smooth opening of the door. This simulates the action of manually opening the door and can more realistically reflect the opening and closing of the refrigerator door in actual use, making the test more accurate. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a front-view perspective perspective view of the door opening and closing durability testing machine of this utility model;

[0018] Figure 2 This is a perspective view of the clamping unit of the door opening and closing durability testing machine of this utility model;

[0019] Figure 3 This is a perspective view of the door opening unit of the door opening and closing durability testing machine of this utility model;

[0020] Figure 4 This is a perspective view of the push-pull unit of the door opening and closing durability testing machine of this utility model.

[0021] Legend:

[0022] 1. Frame; 2. Clamping unit; 3. Door opening unit; 4. Push-pull unit; 5. Refrigerator body; 6. Controller; 201. Mounting plate; 202. Electric push rod one; 203. Clamping plate; 204. Guide rod; 301. Mounting base; 302. Reducer; 303. Rotating shaft; 304. Swing rod; 305. Support rod one; 306. Turntable one; 307. Tension sensor one; 401. Push-pull bracket; 402. Electric push rod two; 403. Connecting block; 404. Support rod two; 405. Turntable two; 406. Tension sensor two; 501. Tilt displacement sensor. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] Reference Figure 1-4 The present invention includes a door opening and closing durability testing machine, comprising: a frame 1, clamping units 2 on both sides of the frame 1, a door opening unit 3 at the front end of the frame 1, a push-pull unit 4 at the front end of the frame 1, and a refrigerator body 5 installed on the inner wall of the frame 1.

[0025] The clamping unit 2 includes a mounting plate 201, which is fixedly connected to the inner wall of the frame 1. An electric push rod 202 is mounted on one side of the mounting plate 201, and a clamping plate 203 is fixedly connected to the output end of the electric push rod 202. Two guide rods 204 are fixedly connected to one side of the clamping plate 203. The clamping unit 2 can clamp and fix the refrigerator body, ensuring that the door will not shake or shift during the test.

[0026] The door opening unit 3 includes a mounting base 301, which is fixedly connected to the front end of the frame 1. A reducer 302 is mounted on the inner wall of the mounting base 301. A rotating shaft 303 is fixedly connected to the output end of the reducer 302. A swing arm 304 is fixedly connected to the outer wall of the rotating shaft 303. A support rod 305 is fixedly connected to one side of the swing arm 304. One end of the support rod 305 is rotatably connected to a turntable 306 via a rotating rod. A tension sensor 307 is mounted on one side of the swing arm 304. The door opening unit 3 enables the smooth opening of the door, simulating manual door opening and monitoring the tension during the opening process.

[0027] The push-pull unit 4 includes a push-pull bracket 401. An electric push rod 402 is mounted on one side of the push-pull bracket 401. A connecting block 403 is fixedly connected to the output end of the electric push rod 402. A support rod 404 is fixedly connected to one side of the connecting block 403. One end of the support rod 404 is rotatably connected to a turntable 405 via a rotating rod. A tension sensor 406 is mounted on one side of the connecting block 403. Hooks are installed on the tension ends of the tension sensors 307 and 406 for easy connection to the door. The push-pull unit 4 allows the lower drawer of the refrigerator body 5 to be pulled out and monitors the tension during the opening process.

[0028] Both turntable 1 (306) and turntable 2 (405) have buffer pads installed on their outer walls. These buffer pads are made of rubber. The rubber buffer pads effectively prevent the door from colliding with the swing arm (304).

[0029] Two guide rods 204 are located on both sides of the electric push rod 202. Both guide rods 204 pass through the mounting plate 201 and are slidably connected to it. The two guide rods 204 enhance the stability of the two clamping plates 203 during movement. A tilt displacement sensor 501 is installed on the door of the refrigerator body 5. The tilt displacement sensor 501 detects the tilt angle and displacement changes of the refrigerator door during opening and closing.

[0030] A controller 6 is installed on one side of the frame 1. The controller 6 is electrically connected to the electric push rod 202, the reducer 302, the electric push rod 402, the tension sensor 307, the tension sensor 406, and the tilt displacement sensor 501. The controller 6 facilitates the operation of the device by the staff.

[0031] Working Principle: During use, the refrigerator is pushed above the frame 1. Before testing, the electric push rod 202 is activated to move the clamping plate 203 along the guide rod 204, thereby clamping and fixing the refrigerator body 5 to ensure that the refrigerator body 5 will not shake or shift during the test. When it is necessary to simulate the door opening action, the controller 6 is activated to control the reducer 302 to drive the rotating shaft 303 to rotate. The rotating shaft 303 then drives the swing rod 304 to swing. The swing rod 304 swings and drives the refrigerator door to open through the tension sensor 307, which monitors the force required to open the door in real time. The turntable 306 can prevent the door from colliding with the swing rod 304 and causing damage, and conversely, realize the door closing function. In addition, when testing the pull-out cabinet at the bottom of the refrigerator body 5, the controller 6 controls the electric push rod 402 to push the connecting block 403 to move, and the tension sensor 406 detects the force of the cabinet being pulled out.

[0032] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A door opening and closing durability testing machine, characterized in that, include: The frame (1) has clamping units (2) on both sides, a door opening unit (3) at the front end of the frame (1), a push-pull unit (4) at the front end of the frame (1), and a refrigerator body (5) installed on the inner wall of the frame (1). The clamping unit (2) includes a mounting plate (201), which is fixedly connected to the inner wall of the frame (1). An electric push rod (202) is installed on one side of the mounting plate (201), and a clamping plate (203) is fixedly connected to the output end of the electric push rod (202). Two guide rods (204) are fixedly connected to one side of the clamping plate (203).

2. The door opening and closing durability testing machine according to claim 1, characterized in that, The door opening unit (3) includes a mounting base (301), which is fixedly connected to the front end of the frame (1). A speed reducer (302) is installed on the inner wall of the mounting base (301). A rotating shaft (303) is fixedly connected to the output end of the speed reducer (302). A swing arm (304) is fixedly connected to the outer wall of the rotating shaft (303). A support rod (305) is fixedly connected to one side of the swing arm (304). A turntable (306) is rotatably connected to one end of the support rod (305) through a rotating rod. A tension sensor (307) is installed on one side of the swing arm (304).

3. The door opening and closing durability testing machine according to claim 1, characterized in that, The push-pull unit (4) includes a push-pull frame (401), an electric push rod (402) is installed on one side of the push-pull frame (401), a connecting block (403) is fixedly connected to the output end of the electric push rod (402), a support rod (404) is fixedly connected to one side of the connecting block (403), a turntable (405) is rotatably connected to one end of the support rod (404) through a rotating rod, and a tension sensor (406) is installed on one side of the connecting block (403).

4. The door opening and closing durability testing machine according to claim 2, characterized in that, Both turntable one (306) and turntable two (405) have buffer pads installed on their outer side walls, and the buffer pads are made of rubber material.

5. The door opening and closing durability testing machine according to claim 1, characterized in that, The two guide rods (204) are located on both sides of the electric push rod (202), and both guide rods (204) pass through the mounting plate (201) and are slidably connected to it.

6. The door opening and closing durability testing machine according to claim 1, characterized in that, A tilt displacement sensor (501) is installed on the door of the refrigerator body (5).

7. The door opening and closing durability testing machine according to claim 1, characterized in that, A controller (6) is provided on one side of the frame (1), and the controller (6) is electrically connected to an electric push rod one (202), a reducer (302), an electric push rod two (402), a tension sensor one (307), a tension sensor two (406), and an tilt displacement sensor (501).

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