Welding spot polishing device for elevator door plate

Abstract

The elevator door plate welding spot polishing device comprises a machine body, the thread directions of the corresponding positions of the surface of a lead screw are opposite, a power mechanism is fixedly connected to one side of the bottom of the surface of the machine body, and the output end of the power mechanism is fixedly connected with the end, extending out of the machine body, of the lead screw through a coupler; a clamping device is fixedly connected to the output end of the lifting mechanism, a mechanical arm is arranged at the position, close to the top, of the inner wall of the machine body, a control host is arranged on one side of the top of the surface of the machine body, and a grinding machine is arranged at the end of the mechanical arm. The invention relates to the technical field of grinding equipment. According to the elevator door plate welding spot polishing device, the anti-loosening effect is achieved, an elevator door can be effectively positioned, the influence of external force or vibration is reduced, the situation of loosening is not prone to occurring, safety and reliability are achieved, the polishing quality is high, and the working efficiency and the using performance are improved.

Description

Technical Field

[0001] The invention relates to the technical field of grinding equipment, in particular to a device for grinding welding points of elevator door panels. Background Art

[0002] Elevator refers to a power-driven electromechanical device that uses a box running on a rigid guide rail or steps running along a fixed line to lift or transport people and goods in parallel. In the process of elevator production, welding of elevator doors is an indispensable process. Before entering the next spraying process, the resistance welding points on the surface of the elevator door panels processed by resistance welding need to be polished and smoothed.

[0003] At present, most of the existing ones still adopt manual grinding, which is time-consuming, labor-intensive and inefficient. Some adopt mechanical grinding, but the overall stability of elevator doors is poor, and they are easily affected by external forces or vibrations, and are prone to random movement or shaking, which in turn affects the grinding speed and quality and reduces the performance. Summary of the invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: an elevator door panel welding spot grinding device comprises a body, a support platform is fixedly connected to the central position of the bottom inner wall of the body, a lead screw is rotatably connected between the corresponding two sides of the inner wall of the body and near the bottom, the threads at the corresponding positions on the surface of the lead screw are in opposite directions, one end of the lead screw penetrates the inner wall of the body and extends to the outside thereof, a power mechanism is fixedly connected to one side of the bottom surface of the body, the output end of the power mechanism is fixedly connected to the end of the lead screw extending to the outside of the body through a coupling, a slider is threadedly connected to the corresponding positions on the surface of the lead screw, a guide rail is fixedly connected to the central position of the bottom inner wall of the body, the bottom end of the slider is slidably connected to the guide rail, the top of the slider is fixedly connected to a lifting mechanism, the output end of the lifting mechanism is fixedly connected to a clamping device, the inner wall of the body and near the top position A mechanical arm is provided, a control host is provided on one side of the top surface of the body, and a grinding mechanism is provided at the end of the mechanical arm. The elevator door panel to be polished is placed on the support platform. At this time, the power mechanism serves as the power, and then drives the lead screw to rotate, and combined with the opposite direction of the thread at the corresponding position on the lead screw surface, the two symmetrical sliders on the lead screw surface move together, and then the clamping device is driven by the lifting mechanism, so that elevator doors of different sizes can be used, and the elevator door panel can be tightened, reducing limitations, and the lifting of the lifting mechanism is used to adjust the door panel to an appropriate height, which helps the mechanical arm to drive the grinding mechanism to polish the door panel welding points, and the interaction between the structures is used to enable the entire device to effectively position the elevator door, reduce the influence of external force or vibration, and is not prone to loosening. It is safe and reliable, so that the grinding quality is high, and the work efficiency and performance are improved.

[0005] Preferably, the clamping device includes a clamping base, the bottom of the clamping base is fixedly connected to the output end of the lifting mechanism, a slot is provided at the central position inside the clamping base, an auxiliary anti-loosening device is provided inside the clamping base and at the position of the slot, and a pressing device is provided on the top of the clamping base.

[0006] Preferably, the auxiliary anti-loosening device includes a pressure device, which is arranged inside the clamping base and located at the position of the card slot, an arc-shaped elastic piece is fixedly connected between the bottom edge of the pressure device and the two sides corresponding to the inside of the clamping base, an elastic air bag is arranged between the bottom edge of the pressure device and the two sides corresponding to the inside of the clamping base and close to the arc-shaped elastic piece, a main air channel is opened inside the clamping base, and the bottom end of the main air channel is connected with the air port of the elastic air bag, when the slider drives the clamping device to move as a whole, the edge of the elevator door panel is inserted into the card slot, and the elevator door panel is preliminarily fixed, and as the clamping base keeps moving, the elevator door panel is clamped, and the pressure device is used to clamp the elevator door panel. The pressure plate on the device is rotatably connected to the bottom of the inner wall of the clamping base, and under the pressure of the elevator door panel, pressing force is applied to the arc-shaped elastic member and the elastic airbag, so that the arc-shaped elastic member is deformed to compress the elastic airbag, and the action force and reaction are used to make the pressing device apply a reverse force to the elevator door panel, thereby promoting the clamping of the door panel. At the same time, the compressed internal gas of the elastic airbag is discharged into the main airway, and the top of the main airway is connected with the bottom of the branch airway on the pressing device, and then the subsequent pressing work is facilitated by the delivery of gas and the increase of air pressure. The interaction and connection between the structures are used to realize multiple functions, which is safe and reliable and improves the performance.

[0007] Preferably, the pressure-bearing device includes a pressure-bearing plate, one side of the surface edge of the pressure-bearing plate is rotatably connected to the bottom position of the inner wall of the clamping base, the surface of the pressure-bearing plate is set as an arc-shaped surface, and the surface of the pressure-bearing plate is fixedly connected with an arc-surface flexible part, and the surface of the arc-surface flexible part is provided with an anti-slip layer. When the pressure-bearing device is pressed by the elevator door panel, under the support of the pressure-bearing plate, the surface of the anti-slip layer and the bottom of the elevator door panel are tightly fitted, thereby playing an anti-slip role. At the same time, the material of the arc-surface flexible part is set to rubber material with good flexibility. When subjected to pressure, the arc-surface flexible part can fill the gap between the pressure-bearing plate and the elevator door panel, thereby promoting the clamping of the elevator door panel, and is not prone to random movement. By utilizing the interaction between the structures, multiple functions are realized, which is safe and reliable and improves the performance of use.

[0008] Preferably, a rotation groove matched with the surface edge of the pressure plate is formed at the bottom of the inner wall of the clamping base, and the arc-surface flexible parts are evenly distributed on the surface of the pressure plate.

[0009] Preferably, the pressing device includes a cylindrical shell, the bottom of which is fixedly connected to the top of the clamping base, a pressing head device is provided at the top of the clamping base and located inside the cylindrical shell, an expansion bladder is provided between the top of the pressing head device and the two sides corresponding to the top of the inner wall of the cylindrical shell, an airway is opened inside the cylindrical shell, and the top of the airway is connected to the air port of the expansion bladder.

[0010] Preferably, the pressure head device includes a sliding pressing piece, which is slidably connected to the top of the clamping base and close to the bottom of the cylindrical shell. The bottom of the sliding pressing piece is fixedly connected to a pressure plate, and the bottom of the pressure plate is provided with anti-slip grooves. When the compressed internal gas of the elastic airbag is transported through the main airway and the tributary airway, it enters the expansion bladder body, and when the air pressure continues to increase, the expansion bladder body expands, thereby pressing the pressure head device downward as a whole, and then applying pressing force to the elevator door panel again, further promoting clamping, and using the pressure plate to increase the contact area, and preventing slipping under the action of the anti-slip grooves, so that the pressing effect is good, and the elevator door panel is not easy to slide. The structures are cleverly linked together, which is safe and reliable, realizes multiple functions, and improves performance.

[0011] Preferably, a sliding hole adapted to the sliding pressing member is provided at the top of the clamping base and near the bottom of the cylindrical shell, and the anti-slip pattern is arranged as a curve, and the anti-slip pattern is evenly distributed at the bottom of the pressure plate.

[0012] The present invention provides a device for grinding welding points of elevator door panels. It has the following beneficial effects: 1. The elevator door panel welding point grinding device, through the body, support platform, lead screw, power mechanism, slider, guide rail, lifting mechanism, clamping device, mechanical arm, control host, grinding mechanism, places the elevator door panel to be ground on the support platform, at this time the power mechanism acts as the power, and then drives the lead screw to rotate, and in combination with the opposite direction of the thread at the corresponding position on the lead screw surface, two sliders symmetrical on the lead screw surface move together, and then the clamping device is driven by the lifting mechanism, and then elevator doors of different sizes can be used, and the elevator door panel can be tightened, reducing limitations, and the lifting of the lifting mechanism is used to adjust the door panel to an appropriate height, which helps the mechanical arm drive the grinding mechanism to grind the door panel welding point, and the interaction between the structures is used, so that the entire device can effectively position the elevator door, reduce the influence of external force or vibration, and is not prone to loosening, safe and reliable, so that the grinding quality is high, and the work efficiency and performance are improved.

[0013] 2. The elevator door panel welding point grinding device includes a clamping base, a card slot, an auxiliary anti-loosening device, a pressing device, a pressure device, an arc-shaped elastic part, an elastic airbag, and a main airway. When the slider drives the clamping device to move as a whole, the edge of the elevator door panel is inserted into the card slot, and then the elevator door panel is initially fixed. As the clamping base keeps moving, the elevator door panel is clamped. The pressure plate on the pressure device is rotatably connected with the bottom of the inner wall of the clamping base, and under the pressure of the elevator door panel, a pressing force is applied to the arc-shaped elastic part and the elastic airbag. , thereby causing the arc-shaped elastic part to deform and compress the elastic airbag, and utilizing the action force and reaction force to cause the pressing device to apply a reverse action force to the elevator door panel, thereby promoting the clamping of the door panel, and at the same time, the compressed internal gas of the elastic airbag is discharged into the main airway, and the top of the main airway is connected with the bottom of the branch airway on the pressing device, and then through the delivery of gas and the increase of air pressure, it helps the subsequent pressing work, and utilizes the interaction and connection between the structures to realize multiple functions, which is safe and reliable and improves the performance of use.

[0014] 3. The elevator door panel welding point grinding device includes a pressure plate, a curved flexible part and an anti-skid layer. When the pressure device is pressed by the elevator door panel, the surface of the anti-skid layer is closely fitted to the bottom of the elevator door panel under the support of the pressure plate, thereby achieving an anti-skid effect. At the same time, the material of the curved flexible part is set to rubber material with good flexibility. When under pressure, the curved flexible part can fill the gap between the pressure plate and the elevator door panel, thereby promoting the clamping of the elevator door panel and preventing it from moving at will. The interaction between the structures is utilized to realize multiple functions, which is safe and reliable and improves the performance.

[0015] 4. The elevator door panel welding point grinding device includes a cylindrical shell, a pressure head device, an expansion bladder, a bronchial airway, a sliding pressing piece, a pressure plate, and anti-skid grooves. When the compressed internal gas of the elastic airbag is transported through the main airway and the bronchial airway, it enters the expansion bladder. When the air pressure continues to increase, the expansion bladder expands, and then the pressure head device is pressed downward as a whole, and then the pressing force is applied to the elevator door panel again, which further promotes clamping. The pressure plate is used to increase the contact area, and the anti-skid grooves are used to prevent slipping, so that the pressing effect is good, and the elevator door panel is not easy to slide. The structures are cleverly connected together, which is safe and reliable, realizes multiple functions, and improves performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the present invention; Figure 3 It is a schematic diagram of the structure of the clamping device of the present invention; Figure 4 This is a schematic diagram of the structure of the auxiliary anti-loosening device of the present invention; Figure 5 It is a schematic structural diagram of the pressure-bearing device of the present invention; Figure 6 It is a schematic diagram of the pressing device of the present invention; Figure 7 It is a schematic diagram of the structure of the pressure head device of the present invention.

[0017] In the figure: 1 body, 2 support platform, 3 screw, 4 power mechanism, 5 slider, 6 guide rail, 7 lifting mechanism, 8 clamping device, 9 mechanical arm, 10 control host, 11 grinding mechanism, 81 clamping base, 82 slot, 83 auxiliary anti-loosening device, 84 pressing device, 831 pressure device, 832 arc elastic part, 833 elastic airbag, 834 main airway, 8311 pressure plate, 8312 arc surface flexible part, 8313 anti-skid layer, 841 cylindrical shell, 842 pressure head device, 843 expansion bladder, 844 bronchial airway, 8421 sliding pressing part, 8422 pressure plate, 8423 anti-skid pattern. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses. Example 1

[0019] See also Figure 1-Figure 7The present invention provides a technical solution: a device for grinding welding points of elevator door panels, comprising a body 1, a support platform 2 is fixedly connected to the central position of the bottom of the inner wall of the body 1, a lead screw 3 is rotatably connected between the corresponding two sides of the inner wall of the body 1 and near the bottom, the threads at the corresponding positions on the surface of the lead screw 3 are in opposite directions, one end of the lead screw 3 penetrates the inner wall of the body 1 and extends to the outside thereof, a power mechanism 4 is fixedly connected to one side of the bottom of the surface of the body 1, the output end of the power mechanism 4 is fixedly connected to one end of the lead screw 3 extending to the outside of the body 1 through a coupling, a slider 5 is threadedly connected to the corresponding positions on the surface of the lead screw 3, a guide rail 6 is fixedly connected to the central position of the bottom of the inner wall of the body 1, the bottom end of the slider 5 is slidably connected to the guide rail 6, a lifting mechanism 7 is fixedly connected to the top of the slider 5, a clamping device 8 is fixedly connected to the output end of the lifting mechanism 7, a mechanical arm 9 is arranged on the inner wall of the body 1 and near the top, the body 1 A control host 10 is provided on the top side of the surface, and a grinding mechanism 11 is provided at the end of the mechanical arm 9. The elevator door panel to be polished is placed on the support platform 2. At this time, the power mechanism 4 serves as the power, and then drives the screw 3 to rotate, and combined with the corresponding position on the surface of the screw 3, the threads are in opposite directions, so that the two symmetrical sliders 5 on the surface of the screw 3 move together, and then the clamping device 8 is driven by the lifting mechanism 7, so that elevator doors of different sizes can be used, and the elevator door panel can be tightened, reducing limitations, and the lifting of the lifting mechanism 7 is used to adjust the door panel to an appropriate height, which helps the mechanical arm 9 to drive the grinding mechanism 11 to polish the door panel welding points, and the interaction between the structures is used to enable the entire device to effectively position the elevator door, reduce the influence of external force or vibration, and is not prone to loosening. It is safe and reliable, so that the grinding quality is high, and the work efficiency and performance are improved. Example 2

[0020] The clamping device 8 includes a clamping base 81, the bottom of which is fixedly connected to the output end of the lifting mechanism 7, a card slot 82 is provided at the central position of the inner part of the clamping base 81, an auxiliary anti-loosening device 83 is provided inside the clamping base 81 and at the position of the card slot 82, and a pressing device 84 is provided on the top of the clamping base 81, which can limit the elevator door panel through the card slot 82 and use the auxiliary anti-loosening device 83 for elastic support, thereby achieving the effect of auxiliary clamping. At the same time, under the interaction between the auxiliary anti-loosening device 83 and the pressing device 84, the pressing device 84 applies pressing force to the elevator door panel again, thereby realizing multiple ways to promote clamping, reducing the influence of external force or vibration, and not prone to loosening. It is safe and reliable, and the performance is improved. Example 3

[0021] The auxiliary anti-loosening device 83 includes a pressure device 831, which is arranged inside the clamping base 81 and located at the position of the card slot 82. An arc-shaped elastic member 832 is fixedly connected between the bottom edge of the pressure device 831 and the two sides corresponding to the inside of the clamping base 81. An elastic air bag 833 is arranged between the bottom edge of the pressure device 831 and the two sides corresponding to the inside of the clamping base 81 and close to the arc-shaped elastic member 832. A main air channel 834 is opened inside the clamping base 81, and the bottom end of the main air channel 834 is connected to the air port of the elastic air bag 833. When the slider 5 drives the clamping device 8 to move as a whole, the edge of the elevator door panel is inserted into the card slot 82, and the elevator door panel is preliminarily fixed. As the clamping base 81 keeps moving, The elevator door panel is then clamped, and the pressure plate 8311 on the pressure device 831 is rotatably connected to the bottom of the inner wall of the clamping base 81. Under the pressure of the elevator door panel, pressing pressure is applied to the arc-shaped elastic member 832 and the elastic airbag 833, so that the arc-shaped elastic member 832 is deformed to compress the elastic airbag 833, and the action and reaction force are used to make the pressing device 84 apply a reverse force to the elevator door panel, thereby promoting the clamping of the door panel. At the same time, the compressed internal gas of the elastic airbag 833 is discharged into the main airway 834, and the top of the main airway 834 is connected to the bottom of the branch airway 844 on the pressing device 84, and then the subsequent pressing work is facilitated by the delivery of gas and the increase of air pressure.

[0022] The pressure-bearing device 831 includes a pressure plate 8311, one side of the surface edge of the pressure plate 8311 is rotatably connected to the bottom position of the inner wall of the clamping base 81, the surface of the pressure plate 8311 is set as an arc surface, the surface of the pressure plate 8311 is fixedly connected with an arc-shaped flexible part 8312, and the surface of the arc-shaped flexible part 8312 is provided with an anti-slip layer 8313.

[0023] A rotating groove that matches the surface edge of the pressure plate 8311 is provided at the bottom of the inner wall of the clamping base 81, and the arc-surface flexible member 8312 is evenly distributed on the surface of the pressure plate 8311. When the pressure device 831 is pressed by the elevator door panel, the surface of the anti-slip layer 8313 fits tightly with the bottom of the elevator door panel under the support of the pressure plate 8311, thereby playing an anti-slip role. At the same time, the material of the arc-surface flexible member 8312 is set to rubber material with good flexibility. When under pressure, the arc-surface flexible member 8312 can fill the gap between the pressure plate 8311 and the elevator door panel, thereby promoting the clamping of the elevator door panel and preventing it from moving at will. Example 4

[0024] The pressing device 84 includes a cylindrical shell 841, the bottom of which is fixedly connected to the top of the clamping base 81, a pressing head device 842 is provided at the top of the clamping base 81 and inside the cylindrical shell 841, an expansion bladder 843 is provided between the top of the pressing head device 842 and the two sides corresponding to the top of the inner wall of the cylindrical shell 841, and an airway 844 is opened inside the cylindrical shell 841, and the top of the airway 844 is connected to the air port of the expansion bladder 843.

[0025] The pressing head device 842 includes a sliding pressing member 8421, which is slidably connected to the top of the clamping base 81 and close to the bottom of the cylindrical shell 841. The bottom of the sliding pressing member 8421 is fixedly connected to a pressure plate 8422, and the bottom of the pressure plate 8422 is provided with anti-slip grooves 8423.

[0026] A sliding hole that is compatible with the sliding pressing piece 8421 is provided at the top of the clamping base 81 and near the bottom of the cylindrical shell 841. The anti-slip pattern 8423 is set as a curve, and the anti-slip pattern 8423 is evenly distributed on the bottom of the pressure plate 8422. When the internal gas of the compressed elastic airbag 833 is transported through the main airway 834 and the branch airway 844, it enters the expansion bladder 843, and when the air pressure continues to increase, the expansion bladder 843 expands, and then presses the pressure head device 842 downward as a whole, and then applies pressing force to the elevator door panel again, which further promotes clamping, and uses the pressure plate 8422 to increase the contact area, and anti-slip is performed under the action of the anti-slip pattern 8423, so that the pressing effect is good, and the elevator door panel is not prone to sliding.

[0027] When in use, first place the entire device at the designated position, and place the elevator door panel to be polished on the support platform 2. At this time, the power mechanism 4 acts as the power to drive the lead screw 3 to rotate, and the threads at the corresponding positions on the surface of the lead screw 3 are in opposite directions, so that the two symmetrical sliders 5 on the surface of the lead screw 3 move together, and then the clamping device 8 is driven by the lifting mechanism 7. When the slider 5 drives the clamping device 8 to move as a whole, the edge of the elevator door panel is inserted into the slot 82, and the elevator door panel is preliminarily fixed. As the clamping base 81 keeps moving, the elevator door panel is clamped. The pressure plate 8311 on the pressure device 831 is rotatably connected to the bottom of the inner wall of the clamping base 81, and under the pressure of the elevator door panel, a pressing force is applied to the arc-shaped elastic member 832 and the elastic airbag 833, so that the arc-shaped elastic member 832 is deformed to compress the elastic airbag 833, and the action and reaction are used to make the pressing device 84 apply a reverse force to the elevator door panel, thereby promoting the clamping of the door panel, and at the same time, the compressed internal gas of the elastic airbag 833 is discharged into the main airway 834, and the top of the main airway 834 is connected to the branch airway 844 on the pressing device 84. The bottom end is connected, and then through the transmission of gas, the increase of air pressure is used to facilitate the subsequent pressing work, and when the pressure-bearing device 831 is pressed by the elevator door panel, the surface of the anti-slip layer 8313 is closely fitted with the bottom of the elevator door panel under the support of the pressure-bearing plate 8311, thereby playing an anti-slip role, and at the same time, the material of the curved flexible member 8312 is set to be rubber material with good flexibility. When subjected to pressure, the curved flexible member 8312 can fill the gap between the pressure-bearing plate 8311 and the elevator door panel, thereby promoting the clamping of the elevator door panel, and is not easy to move at will. When the internal gas of the compressed elastic airbag 833 is transported through the main airway 834 and the branch airway 844, it enters the expansion bladder 843, and when the air pressure continues to increase, the expansion bladder 843 expands, thereby pressing the pressure head device 842 downward as a whole, and then applying pressing force to the elevator door panel again, further promoting clamping, and using the pressure plate 8422 to increase the contact area, and anti-skid under the action of the anti-skid pattern 8423, it is prevented from slipping, so that the pressing effect is good, and the elevator door panel is not easy to slip. The structures are cleverly connected together, which is safe and reliable, realizes multiple functions, and improves performance.

[0028] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. An elevator door panel welding point grinding device, comprising a body (1), characterized in that: A support platform (2) is fixedly connected to the central position of the bottom of the inner wall of the body (1); a lead screw (3) is rotatably connected between the two corresponding sides of the inner wall of the body (1) and close to the bottom; the threads of the lead screw (3) are in opposite directions at the corresponding positions on the surface; one end of the lead screw (3) penetrates the inner wall of the body (1) and extends to the outside; a power mechanism (4) is fixedly connected to one side of the bottom of the surface of the body (1); the output end of the power mechanism (4) is fixedly connected to the end of the lead screw (3) extending to the outside of the body (1) through a coupling; the surface of the lead screw (3) is opposite to the inner wall of the body (1); the output end of the power mechanism (4) is fixedly connected to the end of the lead screw (3) extending to the outside of the body (1) through a coupling; A slider (5) is threadedly connected at the corresponding position, a guide rail (6) is fixedly connected to the central position of the bottom of the inner wall of the body (1), the bottom end of the slider (5) is slidably connected to the guide rail (6), the top of the slider (5) is fixedly connected to a lifting mechanism (7), the output end of the lifting mechanism (7) is fixedly connected to a clamping device (8), a mechanical arm (9) is arranged on the inner wall of the body (1) and near the top, a control host (10) is arranged on the top side of the surface of the body (1), and a grinding mechanism (11) is arranged at the end of the mechanical arm (9).

2. The elevator door panel welding point grinding device according to claim 1, characterized in that: The clamping device (8) comprises a clamping base (81), the bottom of the clamping base (81) being fixedly connected to the output end of the lifting mechanism (7), a clamping groove (82) being provided at a central position inside the clamping base (81), an auxiliary anti-loosening device (83) being provided inside the clamping base (81) and at a position of the clamping groove (82), and a pressing device (84) being provided at the top of the clamping base (81).

3. The elevator door panel welding point grinding device according to claim 2, characterized in that: The auxiliary anti-loosening device (83) comprises a pressure device (831), the pressure device (831) is arranged inside the clamping base (81) and located at the position of the clamping groove (82), an arc-shaped elastic member (832) is fixedly connected between the bottom edge of the pressure device (831) and the two sides corresponding to the inside of the clamping base (81), an elastic air bag (833) is arranged between the bottom edge of the pressure device (831) and the two sides corresponding to the inside of the clamping base (81) and close to the arc-shaped elastic member (832), and a main air channel (834) is opened inside the clamping base (81), and the bottom end of the main air channel (834) is connected to the air port of the elastic air bag (833).

4. The elevator door panel welding point grinding device according to claim 3 is characterized in that: The pressure-bearing device (831) comprises a pressure-bearing plate (8311), one side of the surface edge of the pressure-bearing plate (8311) is rotatably connected to the bottom position of the inner wall of the clamping base (81), the surface of the pressure-bearing plate (8311) is arranged as an arc-shaped surface, the surface of the pressure-bearing plate (8311) is fixedly connected to a curved surface flexible member (8312), and the surface of the curved surface flexible member (8312) is provided with an anti-slip layer (8313).

5. The elevator door panel welding point grinding device according to claim 4, characterized in that: The bottom of the inner wall of the clamping base (81) is provided with a rotation groove that matches the surface edge of the pressure plate (8311), and the arc-surface flexible parts (8312) are evenly distributed on the surface of the pressure plate (8311).

6. The elevator door panel welding point grinding device according to claim 2, characterized in that: The pressing device (84) comprises a cylindrical shell (841), the bottom of the cylindrical shell (841) is fixedly connected to the top of the clamping base (81), a pressure head device (842) is arranged at the top of the clamping base (81) and inside the cylindrical shell (841), an expansion sac (843) is arranged between the top of the pressure head device (842) and the two sides corresponding to the top of the inner wall of the cylindrical shell (841), and an airway (844) is opened inside the cylindrical shell (841), and the top of the airway (844) is connected to the air port of the expansion sac (843).

7. The elevator door panel welding point grinding device according to claim 6, characterized in that: The pressing head device (842) comprises a sliding pressing member (8421), wherein the sliding pressing member (8421) is slidably connected to the top of the clamping base (81) and close to the bottom of the cylindrical shell (841), a pressing plate (8422) is fixedly connected to the bottom of the sliding pressing member (8421), and an anti-slip pattern (8423) is provided on the bottom of the pressing plate (8422).

8. The elevator door panel welding point grinding device according to claim 7, characterized in that: A sliding hole adapted to the sliding pressing member (8421) is provided at the top of the clamping base (81) and close to the bottom of the cylindrical shell (841); the anti-slip pattern (8423) is arranged in the form of a curve; and the anti-slip pattern (8423) is evenly distributed at the bottom of the pressure plate (8422).

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