A lifting bed load testing machine

Abstract

This utility model discloses a load testing machine for a lifting bed, belonging to the field of electric medical bed testing technology. It includes a frame, a load plate assembly mounted on the frame, an adjustment mechanism, and multiple moving units for driving the load plate assembly onto the test bed. The load plate assembly includes counterweights and angle plates that can be placed on the test bed. The angle plates include multiple hinged connecting plates. The adjustment mechanism is used to pick up, place, and move several counterweights onto the angle plates. The multiple moving units are electrically connected to each other. Each moving unit includes a connecting rope connected to one end of a connecting plate and a driving component for driving the connecting rope to pull the connecting plate up and down. This utility model provides a load testing machine for a lifting bed, which is applicable to different test beds and can move the position of the test center to simulate real-world usage conditions for lifting load experiments on the test bed, improving the accuracy of the test results.

Description

Technical Field

[0001] This utility model belongs to the field of electric medical bed testing technology, specifically relating to a load testing machine for a lifting bed. Background Technology

[0002] Medical and nursing beds are important places for patients to rest and recuperate. Some medical procedures require nursing beds that can be driven by electric motors to adjust the height, angle, etc. They are mainly used to provide patients with a comfortable bed environment and facilitate doctors' work. These electric medical beds are widely used in medical institutions such as hospital wards, ICUs, rehabilitation centers, and nursing homes. They are also suitable for home care, providing comfortable and convenient nursing services for patients who cannot take care of themselves, seriously ill patients, and people with disabilities.

[0003] The "lifting function" is one of the core functions of an electric medical bed. This "lifting function" includes the overall lifting of the bed surface and the individual lifting of each support plate. Since the electric medical bed is used to support patients, the load on the electric medical bed may change with differences in weight and body position. If the load capacity is not up to standard, long-term use may lead to patients falling or bumping into things during use, and there are safety risks such as equipment malfunction when medical staff operate the equipment, which will also affect nursing efficiency. Therefore, lifting load testing of electric medical beds is essential. In view of this, there is an urgent need for a load testing machine for lifting beds. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a load testing machine for lifting test beds, which is applicable to different test beds and can move the position of the test center to simulate real use conditions for lifting load tests on the test bed, thereby improving the accuracy of test results.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a load testing machine for a lifting bed, including a frame, a load plate assembly, an adjustment mechanism, and a plurality of moving units for driving the load plate assembly to be placed on the test bed; The load plate assembly includes counterweights and an angle plate that can be placed on a test bed. The angle plate includes multiple connecting plates that are hinged to each other. The adjustment mechanism is used to pick up, place, and move several of the counterweights onto the angle plate. The multiple moving units are electrically connected to each other, and each moving unit includes a connecting rope with one end connected to the connecting plate and a driving component for driving the connecting rope to pull the connecting plate up and down.

[0006] Preferably, the adjustment mechanism includes a movable frame that can move along a first direction, an adjustment plate that can be vertically raised and lowered on the movable frame, guide posts on opposite sides of the adjustment plate, a limiting post for passing through a plurality of counterweights on the angle plate, and through holes on the counterweights that are adapted to the adjustment plate and the guide posts. The guide posts that move into the through holes can be embedded in guide grooves provided on the inner wall of the through holes along the first direction.

[0007] Preferably, the moving frame is connected to a linear drive unit.

[0008] Preferably, the movable frame is provided with a telescopic component that is connected to the adjusting plate.

[0009] Preferably, at least two guide posts are spaced apart on any side of the adjustment plate, and the guide posts on both sides of the adjustment plate are positioned opposite each other.

[0010] Preferably, the frame is symmetrically provided with two telescopic members along the angle plate, the angle plate can move between the two telescopic members, and the output end of the two telescopic members can be symmetrically clamped on the angle plate, with the clamping direction perpendicular to the rotation axis of the connecting plate.

[0011] Preferably, guide blocks are provided on both sides of the frame, and pads are provided inside the frame.

[0012] Preferably, a groove for embedding the guide post is provided on the upper side of the end of the guide groove.

[0013] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: (1) In this utility model, by setting a moving unit, the angle plate is placed on the test bed. By setting a connecting plate, the angle plate can be adjusted according to different test beds and different lifting parts of the test bed, so that the angle plate can be adapted to various types of test beds. By adjusting the position and number of counterweights on the angle plate through the adjustment mechanism, different patients' side-lying and other actions on the test bed can be simulated. The angle plate carrying the counterweights is placed on the test bed, and the driving component loosens the connecting rope, so that the angle plate can be freely adjusted according to the test bed, improving the flexibility of the device; it can be applied to different test beds, and the position of the test center can be moved according to different test beds and different test requirements to simulate the real use situation to carry out lifting load experiments on the test bed, thereby improving the accuracy of the test results. (2) In this utility model, by setting the second telescopic component, the angle plate can be moved between the two telescopic components on both sides of the frame through the moving unit after the test. The second telescopic component adjusts the angle plate to the initial position, which facilitates the adjustment mechanism to replace and adjust the counterweight. It can continuously lift the load test on different test beds and improve the applicability of the test machine. (3) In this utility model, by setting pads and guide blocks, the experimental bed can be guided when it is pushed into the frame, avoiding direct contact between the experimental bed and the frame, protecting the frame and the load plate assembly, adjustment mechanism and moving unit on the frame, guiding the experimental bed to a suitable test position, and improving the stability of the testing machine. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the preferred embodiment of the load testing machine for lifting beds of this utility model; Figure 2 This is a schematic diagram of the adjustment mechanism in the load testing machine for lifting beds of this utility model; Figure 3 yes Figure 2 Enlarged view of point A in the structural schematic diagram shown; Figure 4 This is a schematic diagram of the moving unit in the load testing machine for lifting beds of this utility model; Figure 5 This is a schematic diagram of the frame structure of the load testing machine for lifting beds according to this utility model; Figure 6 This is a test diagram from a preferred embodiment of the load testing machine for lifting beds of this utility model.

[0015] Among them, 100 is the test bed; 1. Load plate assembly; 101. Counterweight block; 111. Through hole; 112. Guide groove; 113. Groove; 102. Angle plate; 121. Connecting plate; 122. Limiting post; 2. Adjustment mechanism; 201. Adjustment plate; 211. Guide column; 202. Moving frame; 3. Moving unit; 301. Connecting rope; 302. Driving component; 4. Frame; 401. Linear drive unit; 411. Telescopic component one; 402. Guide block; 403. Pad block; 404. Telescopic component two. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0017] It should be noted that if directional indicators (such as up, down, bottom, top, etc.) are involved in this embodiment, these directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. Unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. Example 1

[0018] like Figure 1 As shown, a load testing machine for a lifting bed includes a load plate assembly 1, an adjusting mechanism 2, and multiple moving units 3 for driving the load plate assembly 1 to be placed on a test bed 100. The load plate assembly 1, the adjusting mechanism 2, and the moving units 3 are all mounted on a frame 4, and the test bed 100 is disposed within the frame 4. The moving units 3 place the load plate assembly 1 on the test bed 100 to be tested, conduct the test, and obtain the test results. Figure 4 As shown, the load plate assembly 1 includes a counterweight 101 and an angle plate 102 that can be placed on the test bed 100 via a moving unit 3. The angle plate 102 includes multiple connecting plates 121 that are hinged to each other. The adjustment mechanism 2 can pick up, place, and move several counterweights 101 onto the angle plate 102 according to test requirements. The multiple moving units 3 are electrically connected to each other. The moving unit 3 includes a connecting rope 301 with one end connected to the connecting plate 121 and a driving component 302 for driving the connecting rope 301 to pull the connecting plate 121 up and down. The driving component 302 is a lifting motor or a winch. In this embodiment, a lifting motor is preferred, which can be applied to different test beds 100 and can move the position of the test center according to different test beds 100 and different test requirements to simulate the real use situation to carry out lifting load experiments on the test bed 100, thereby improving the accuracy of the test results.

[0019] Specifically, when the test bed 100 needs to undergo a static test, the test bed 100 is adjusted to the required lifting angle. The connecting rope 301 is adjusted via the moving unit 3, and the connecting rope 301 pulls the connecting plate 121. The pulling force on the multiple connecting plates 121 is adjusted according to the lifting angle of the test bed 100 until the angle plate 102 is adapted to the test bed 100. According to the test requirements, the number and position of the counterweights 101 placed on the angle plate 102 are adjusted using the adjusting mechanism 2 to simulate real-world usage. The connecting rope 301 is then adjusted via the moving unit 3 to lower the angle plate 102 onto the test bed 100, thereby conducting a lifting load test on the test bed 100. When the test bed 100 needs to undergo a dynamic test, such as... Figure 6 As shown, according to the test requirements, the number and position of the counterweights 101 placed on the angle plate 102 are adjusted by the adjustment mechanism 2, and then the connecting rope 301 is adjusted by the moving unit 3 to lower the angle plate 102 onto the test bed 100. The test bed 100 adjusts its lifting angle according to the requirements. The angle plate 102 adapts to the lifting angle of the test bed 100 by means of the connecting plate 121 that is hinged to each other, thereby conducting dynamic tests on the test bed 100.

[0020] like Figure 2 and Figure 3 As shown, the adjustment mechanism 2 includes a movable frame 202 capable of moving along a first direction. The movable frame 202 is equipped with a telescopic member 411 connected to the adjustment plate 201. The telescopic member 411 is used to drive the adjustment plate 201 to rise and fall vertically. The telescopic member is preferably an electric cylinder. Guide posts 211 are provided on opposite sides of the adjustment plate 201. At least two guide posts 211 are spaced apart on any side of the adjustment plate 201, and the guide posts 211 on both sides of the adjustment plate 201 are positioned opposite each other, enabling stable lifting of the counterweight 101. The angle plate 102 is equipped with limiting posts 122 for passing through several counterweights 101. Two limiting posts 122 form a group, and multiple groups are provided on the angle plate 102. Appropriate limiting posts 122 are selected according to experimental requirements. The counterweight 101 is equipped with a... The guide post 211 has a corresponding through hole 111. When multiple counterweights 101 are stacked together, the through holes 111 of each counterweight 101 are connected to form an installation space. The installation space allows the adjustment plate 201 and the guide post 211 to move from the through hole 111 of the top counterweight 101 to the through hole 111 of the bottom counterweight 101. The guide post 211 that moves into the through hole 111 can be embedded in the guide groove 112 provided on the inner wall of the through hole 111 along the first direction. The upper side of the end of the guide groove 112 is provided with a groove 113 for embedding the guide post 211. Thus, an appropriate number of counterweights 101 can be placed on the angle plate 102 according to the test bed 100 and test requirements. Various tests with different requirements can be performed on the test bed 100, and tests can be performed on different test beds 100, which is more flexible.

[0021] like Figure 2 As shown, specifically, the movable frame 202 is connected to a linear drive unit 401, which is located on the frame 4. Two linear drive units 401 are provided and connected to both ends of the movable frame 202 respectively. In this embodiment, the linear drive unit 401 preferably uses screw drive. A motor is provided on the frame 4, and the output shaft of the motor is connected to a screw. A screw sleeve, which is used in conjunction with the screw 405, is fixedly connected to the movable frame 202. The motor 404 drives the screw to rotate, and the screw sleeve converts the rotation of the screw into linear movement of the movable frame 202, thus enabling the adjustment mechanism 2 to... The screw moves along a first direction, which is perpendicular to the lifting direction of the angle plate 102 and parallel to the rotation axis of the connecting plate 121. The position of the counterweight 101 on the angle plate 102 is adjusted. Fixed plates are provided at both ends of the screw, and the fixed plates are connected to the frame 4. One end of the screw is connected to a fixed plate, and the other end of the screw passes through the screw sleeve 406 and another fixed plate and is connected to the motor. A slide rod is provided between the two fixed plates and passes through the screw sleeve 406. This simulates the real use situation such as the patient lying on their side, improves the accuracy of the test results and improves the stability of the testing machine.

[0022] Specifically, when the adjustment mechanism 2 adjusts the number of counterweights 101 according to the test requirements and different test beds 100, the output end of the electric cylinder drives the adjustment plate 201 through the installation space 113 to select an appropriate number of counterweights 101. At the same time, the guide post 211 is placed in the through hole 111 of the bottom counterweight 101 and embedded in the groove 113 through the guide groove 112. Then, the electric cylinder is used to place the appropriately combined counterweights 101 on the angle plate 102 through the limiting post 122. During the test, the limiting post 122 can ensure that the counterweights 101 do not move, which is convenient for adding or removing counterweights 101 later. Example 2

[0023] To further improve the structural stability of the testing machine, this embodiment is an improvement on embodiment 1.

[0024] like Figure 5 As shown, the frame 4 is equipped with a second telescopic component 404, with the clamping direction perpendicular to the rotation axis of the connecting plate 121. After the test bed 100 is subjected to a lifting load test, the moving unit 3 lifts the angle plate 102 through the connecting rope 301 to the space between the second telescopic components 404 symmetrically arranged along the angle plate 102 on the frame 4. The two telescopic components 404 work, with their output shafts symmetrically clamping the angle plate 102 and pushing the angle plate 102 to the starting position. The clamping direction is perpendicular to the rotation axis of the connecting plate 121, which facilitates the adjustment mechanism 2 to adjust the counterweight 101 and facilitates the next lifting load test. The second telescopic component 404 is preferably a side-push cylinder.

[0025] like Figure 5As shown, guide blocks 402 are provided on both sides of the frame 4, and pad blocks 403 are provided inside the frame 4. When the test bed 100 to be tested is pushed into the frame 4, the guide blocks 402 guide the test bed 100 to a suitable position, which facilitates the testing of the test bed 100, saves the time of adjusting the test bed 100, improves the efficiency of the test, and can prevent the test bed from directly contacting the frame 4 when pushing the test bed into the frame 4, protecting the frame 4 and the load plate assembly 1, adjustment mechanism 2 and moving unit 3 on the frame 4, and improving the stability of the testing machine.

[0026] like Figure 5 As shown, a safety light curtain is further installed at the entrance of the frame 4, forming an invisible "safety protection barrier" through the "infrared beam array". When a human body or object is detected to have entered the dangerous area, the power source of the testing machine can be quickly cut off, and the test can be forcibly stopped, thereby avoiding safety accidents such as pinching, shearing, and impact, and ensuring the controllability of influencing factors during the test, thus ensuring the accuracy of the test results.

[0027] like Figure 5 As shown, the frame 4 is further equipped with protective plates around its perimeter to protect the internal test components and ensure the safety of the personnel.

[0028] like Figure 5 As shown, the frame 4 is further provided with a fixing groove on its side. When the test bed 100 is moved to the test position, the test bed 100 is fixed by the fixing groove to prevent the test bed 100 from shifting during the test and affecting the test results.

[0029] like Figure 1 As shown, an electrical control box is further provided on one side of the frame 4. The motion parameters are set through computer operation software to control the test operation of the testing machine, reduce manual intervention, and improve the automation of the test process.

[0030] Working principle: During the test, the test bed 100 is first pushed into the frame 4, and the position of the test bed 100 is pre-fixed by the caster wheel. Then, the test bed 100 is fixed by the fixing groove. Next, according to the test bed 100 and the test requirements, various parameters of the test process are set through the electrical control box. During the test: First, according to the set values, the electric cylinder drives the adjusting plate 201 to hold the counterweight block 101 of appropriate weight. The counterweight blocks 101 stacked together are moved together by the electric cylinder to the appropriate position on the angle plate 102. Then, the driving component 302 retracts and releases the connecting rope 301. According to the setting, the angle plate 102 is adjusted. Then, the driving component 302 places the angle plate 102 on the test bed 100 and the test begins. After the test, the driving component 302 raises the angle plate 102 between the two telescopic components 404. The two telescopic components 404 adjust the angle plate 102 to the initial position to prepare for the next test.

[0031] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A load testing machine for a lifting bed, comprising a frame (4), characterized in that: It includes a load plate assembly (1) mounted on a frame (4), an adjustment mechanism (2), and multiple moving units (3) for driving the load plate assembly (1) to be placed on a test bed (100). The load plate assembly (1) includes a counterweight (101) and an angle plate (102) that can be placed on a test bed (100). The angle plate (102) includes a plurality of connecting plates (121) that are hinged to each other. The adjustment mechanism (2) is used to pick up, place, and move a plurality of the counterweights (101) onto the angle plate (102). The multiple moving units (3) are electrically connected to each other. Each moving unit (3) includes a connecting rope (301) with one end connected to the connecting plate (121) and a driving component (302) for driving the connecting rope (301) to pull the connecting plate (121) up and down.

2. The load testing machine for a lifting bed according to claim 1, characterized in that: The adjustment mechanism (2) includes a movable frame (202) that can move along a first direction. The movable frame (202) is provided with an adjustment plate (201) that can be vertically raised and lowered. Guide posts (211) are provided on both sides of the adjustment plate (201). The angle plate (102) is provided with a limiting post (122) for passing through a plurality of counterweights (101). The counterweights (101) are provided with through holes (111) that are adapted to the adjustment plate (201) and the guide posts (211). The guide posts (211) that move into the through holes (111) can be embedded in the guide grooves (112) provided on the inner wall of the through holes (111) along the first direction.

3. The load testing machine for a lifting bed according to claim 2, characterized in that: The mobile frame (202) is connected to a linear drive unit (401).

4. The load testing machine for a lifting bed according to claim 2, characterized in that: The movable frame (202) is provided with a telescopic component (411) that is connected to the adjusting plate (201).

5. The load testing machine for a lifting bed according to claim 2, characterized in that: At least two guide posts (211) are provided at intervals on any side of the adjustment plate (201), and the guide posts (211) on both sides of the adjustment plate (201) are opposite to each other.

6. The load testing machine for a lifting bed according to claim 1, characterized in that: The frame (4) is symmetrically provided with telescopic components two (404) along the angle plate (102). The angle plate (102) can move between the two telescopic components two (404), and the output end of the telescopic component two (404) can be symmetrically clamped on the angle plate (102), with the clamping direction perpendicular to the rotation axis of the connecting plate (121).

7. The load testing machine for a lifting bed according to claim 1, characterized in that: Guide blocks (402) are provided on both sides of the frame (4), and pads (403) are provided inside the frame (4).

8. The load testing machine for a lifting bed according to claim 2, characterized in that: The upper side of the end of the guide groove (112) is provided with a groove (113) for embedding the guide post (211).

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