Welding and positioning tool for elevator handrail

Abstract

The utility model is suitable for the technical field of elevator handrail welding, and provides an elevator handrail welding and positioning tool which comprises a base. The positioning assembly comprises a lifting seat arranged at the top of the base, a forward rotating shaft is rotationally arranged in the lifting seat, two first sliding blocks are arranged on the forward rotating shaft, one side of each first sliding block is elastically connected with a second sliding block, clamping mechanisms are arranged at the two ends of the lifting seat, a reverse rotating shaft is rotationally arranged in the base, and two third sliding blocks are arranged on the reverse rotating shaft; a cross rod set is arranged between the third sliding block and the lifting base. A third gear is rotationally arranged at one end of the base. A first gear is rotationally arranged on the forward rotating shaft. A second gear is rotationally arranged on the reverse rotating shaft. A forward ratchet wheel is arranged on the first gear. Therefore, the handrail welding device can be suitable for various handrails with different diameters, the welding height of the handrails can be adjusted, automatic positioning can be carried out, and the welding accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator handrail welding, in particular to an elevator handrail welding positioning tool. Background Art

[0002] With the improvement of residents' living standards, the application scope of elevators is becoming wider and wider. In order to improve the comfort of elevator use, some elevators are equipped with handrails. Most handrails are installed by welding. When welding the elevator handrails, positioning tooling is required to ensure accurate welding.

[0003] There are many elevator component welding devices in the prior art, such as an elevator component welding fixture with publication number CN213888896U, which includes a base, both ends of the base are fixedly connected with a support, the inner side of the support is respectively provided with a fixed seat and a clamping seat, the left side of the fixed seat is fixedly connected with a fixed column, a rotating motor is fixedly installed on the support, the upper end of the screw rod is fixedly connected to the output end of the forward and reverse motor, and a stop plug is slidably inserted at the bottom of the clamping seat, which can improve the welding accuracy and work efficiency, but the welding and installation process of the elevator handrail is mostly at the rear end of the overall assembly process of the elevator, and the specific processing method is to weld the handrail to the assembled elevator inner wall. The above device has poor applicability when welding the handrail and is still inconvenient to use.

[0004] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] In view of the above-mentioned defects, the purpose of the utility model is to provide an elevator handrail welding positioning tool, which can be suitable for handrails of various different diameters, can adjust the welding height of the handrail, and can perform automatic positioning to improve the accuracy of welding.

[0006] The lifting mechanism is a kind of inwardly movable, and its outside is provided with the movable part, and its outside is provided with the movable part, and its inside is provided with the movable part.

[0007] According to the elevator handrail welding positioning tooling of the utility model, the ends of the third sliders that are close to each other are elastically connected to the fourth slider, a bottom plate is provided below the reversal shaft, a connecting rod is rotatably provided between the fourth slider and the bottom plate, a plurality of blocking tubes are provided on the bottom plate, a limiting plate is elastically connected below the bottom plate, and a plurality of suction cups cooperating with the blocking tubes are provided on the limiting plate.

[0008] According to the elevator handrail welding positioning tooling of the utility model, a first spring is provided between the first slider and the second slider, a second spring is provided between the third slider and the fourth slider, and a plurality of third springs are provided between the bottom plate and the limiting plate.

[0009] According to the elevator handrail welding positioning tooling of the utility model, a through groove cooperating with the limiting plate is provided at the bottom of the base.

[0010] According to the elevator handrail welding positioning tool of the utility model, the third gear is connected to the output shaft of the driving member, and the driving member is arranged on a side wall at one end of the base.

[0011] According to the elevator handrail welding positioning tool of the utility model, the clamping mechanism includes two opposite clamping plates, the clamping plates are rotatably connected to the lifting seat, and the connection between the clamping plates and the lifting seat is provided with a torsion spring.

[0012] The purpose of the utility model is to provide an elevator handrail welding positioning tool. By setting a positioning component, it can not only fix handrails of various diameters, expanding the application range of the device, but also adjust the welding height of the handrail, reducing the workload of the user, and enable the device to automatically position, avoiding the device from malfunctioning during welding, improving the accuracy of welding, and the device only needs one power source to operate, reducing the cost of use. In summary, the beneficial effects of the utility model are: it can be applied to handrails of various diameters, can adjust the welding height of the handrail, and can automatically position, improving the accuracy of welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the external structure of the utility model;

[0014] Figure 2 It is a front cross-sectional view of the utility model;

[0015] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure of part A;

[0016] Figure 4 yes Figure 2 A schematic diagram of the enlarged structure of part B;

[0017] Figure 5 yes Figure 2 A schematic diagram of the enlarged structure of part C;

[0018] In the figure: 1-base, 11-accommodating chamber, 12-universal wheel, 14-through groove, 2-positioning assembly, 21-lifting seat, 211-support, 22-forward rotation axis, 221-first slider, 222-second slider, 223-first gear, 23-clamp, 24-reverse axis, 241-third slider, 242-cross rod group, 243-second gear, 25-fourth slider, 251-connecting rod, 26-bottom plate, 261-sealing tube, 27-limiting plate, 271-suction cup, 28-driving member, 281-third gear. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0020] See also Figure 1 to Figure 5The utility model provides an elevator handrail welding positioning tool, including a base 1 and a positioning component 2. Universal wheels 12 are provided at the four corners of the bottom surface of the base 1 to facilitate users to push the device to move. A receiving cavity 11 is provided in the base 1, and a positioning component 2 is provided in the receiving cavity 11.

[0021] See also Figure 1 to Figure 5 The positioning assembly 2 includes a lifting seat 21 and a positive rotation shaft 22. The lifting seat 21 is provided on the top of the accommodating cavity 11. A cavity is provided in the lifting seat 21. A positive rotation shaft 22 is rotatably provided in the cavity. Both ends of the positive rotation shaft 22 are rotatably connected to the side wall of the cavity. Two first sliders 221 are provided on the positive rotation shaft 22. The first sliders 221 are slidably connected to the bottom surface of the cavity. Two first circulation grooves in opposite directions are provided on the positive rotation shaft 22. The two first circulation grooves are respectively matched with the two first sliders 221. The sides of the positive rotation shaft 22 away from each other are each provided with a second Slider 222, a first spring is provided between the adjacent second slider 222 and the first slider 221, clamping mechanisms are provided at both ends of the lifting seat 21, the clamping mechanisms include two opposite clamping plates 23, the clamping plates 23 are rotatably connected to the lifting seat 21, and torsion springs are provided at the connection between the clamping plates 23 and the lifting seat 21. When the torsion spring is in a natural state, the clamping mechanism is in a relaxed state, and the second slider 221 can cooperate with the bottom end of the clamping plate 23. When the second slider 221 is located between the two clamping plates 23, the clamping mechanism is in a clamping state.

[0022] See also Figure 1 to Figure 5 A reversing shaft 24 is rotatably provided in the accommodating chamber 11 below the lifting seat 21, and both ends of the reversing shaft 24 are rotatably connected to the side walls of the accommodating chamber 11, and two third sliders 241 are provided on the reversing shaft 24. Two second circulation grooves in opposite directions are provided on the surface of the reversing shaft 24, and the two second circulation grooves are respectively matched with the two third sliders 241, and a cross rod group 242 is provided between the third slider 241 and the lifting seat 21 (that is, the top two ends of the cross rod group 242 are respectively rotatably connected to the two sliding plates, and the sliding plates are both slidably connected to the lifting seat 21, and the bottom two ends of the cross rod group 242 are respectively rotatably connected to the two third sliders 241). A driving member 28 is provided on the side wall at one end of the accommodating chamber 11, and a third gear 281 is provided on the output shaft of the driving member 28. The end of the forward shaft 22 close to the driving member 28 passes through the lifting seat 21 and is rotatably connected to the first gear 223. When the lifting seat 21 is at the lowest point of its motion range, the first gear 223 is meshed with the third gear 281, and the end of the reverse shaft 214 close to the driving member 28 is rotatably connected to the second gear 243, and the second gear 243 is meshed with the third gear 281. A positive ratchet is provided on the first gear 223, a positive ratchet is unidirectionally rotatably connected to the forward shaft 22, a reverse ratchet is provided on the second gear 243, and a reverse ratchet is unidirectionally rotatably connected to the reverse shaft 24 (torsion springs are provided at the connection between the forward shaft 22 and the positive ratchet, and at the connection between the reverse shaft 24 and the reverse ratchet).

[0023] See also Figure 1 to Figure 5 The fourth slider 25 is provided on the side where the third sliders 241 are close to each other, and the second spring is connected between the adjacent third sliders 241 and the fourth sliders 25. A bottom plate 26 is provided below the reversing shaft 24, and a connecting rod 251 is rotatably provided between the bottom plate 26 and the fourth slider 25 (that is, one end of the connecting rod 251 is rotatably connected to the fourth slider 25, and the other end of the connecting rod 251 is rotatably connected to the bottom plate 26). A limiting plate 27 is provided below the bottom plate 26, and a plurality of third springs are provided between the bottom plate 26 and the limiting plate 27. A plurality of blocking tubes 261 are provided on the bottom plate 26, and a plurality of suction cups 271 cooperating with the blocking tubes 261 are provided on the limiting plate 27. When the third spring is in a natural state, the blocking tubes 261 cooperate with the suction cups 271. A one-way air valve is provided in the blocking tubes 261. When the bottom plate 26 drives the limiting plate 27 to move downward and squeezes the suction cups 271, the air inside the suction cups 271 can be discharged through the blocking tubes 261, thereby achieving fixation. A through groove 14 cooperating with the limiting plate 27 is provided on the bottom surface of the accommodating cavity 11.

[0024] See also Figure 1 to Figure 5 Preferably, one end of the second slider 222 close to the clamping plate 23 is provided with a chamfer, so that the device can be applied to handrails of various different diameters.

[0025] See also Figure 1 to Figure 5 Preferably, a plurality of limit rods passing through the third slider 241 and the fourth slider 25 are provided beside the reversing shaft 24, and both ends of the limit rods are connected to the side walls of the accommodating cavity 11, which can prevent the third slider 241 from rotating and provide support for the fourth slider 25.

[0026] See also Figure 1 to Figure 5 Preferably, a support 211 is provided in the middle of the top surface of the lifting seat 21 to provide auxiliary support for the armrest.

[0027] See also Figure 1 to Figure 5 Preferably, the driving member 28 is a rotary motor that can provide sufficient power.

[0028] During the implementation of the utility model: when the device is in a natural state, the lifting seat 21 is located at the lowest point of its motion range, the first gear 223 is meshed with the third gear 281, and the driving member 28 is started at this time, the driving member 28 rotates forward, the positive ratchet cooperates with the positive pawl, the reverse ratchet does not cooperate with the reverse pawl, and the forward shaft 22 rotates, so that the two first sliders 221 drive the two second sliders 222 to move away from each other, and the second slider 222 cooperates with the clamping plate 23, thereby clamping the handrail. Then the driving member 28 reverses, the positive ratchet does not cooperate with the positive pawl, the reverse ratchet cooperates with the reverse pawl, the reverse shaft 24 rotates, the third sliders 241 move away from each other, under the action of the cross rod group 242, the lifting seat 21 drives the handrail to rise, in the initial movement of the third slider 241, the third slider 241 drives the fourth slider 25 to move away from each other, under the action of the connecting rod 251, the bottom plate 26 drives the limit plate 27 to descend, the suction cup 271 on the limit plate 27 first touches the ground, and then the bottom plate 26 continues to descend, and the air in the suction cup 271 passes through the one-way air valve in the blocking tube 261 to achieve positioning. When the welding is completed, the two third sliders 241 drive the two fourth sliders 25 to move closer to each other, and the bottom plate 26 rises. At this time, because the suction cup 271 is in a vacuum state, the guide column limit plate 27 does not rise, and the third spring is stretched, so that the blocking tube 261 and the suction cup 271 are disengaged, and then the suction cup 271 is out of the vacuum state, and the device is reset.

[0029] The utility model provides an elevator handrail welding positioning tool. By setting a positioning component, it can not only fix handrails of various diameters, expanding the application range of the device, but also adjust the welding height of the handrail, reducing the workload of the user, and can automatically position the device to avoid malfunction of the device during welding, thereby improving the accuracy of welding. Moreover, the device only needs one power source to operate, thereby reducing the cost of use. In summary, the beneficial effects of the utility model are: it can be applied to handrails of various diameters, can adjust the welding height of the handrail, and can automatically position the device to improve the accuracy of welding.

[0030] Of course, the present invention may have a variety of embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field may make corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. An elevator handrail welding positioning tool, characterized in that: include: The base has universal wheels at the four corners of its bottom surface; The positioning assembly comprises a lifting seat and a positive rotation shaft, the lifting seat is arranged on the top of the base, a positive rotation shaft is rotatably provided in the lifting seat, two first sliders and a first circulation groove are provided on the positive rotation shaft, the sides of the first sliders away from each other are elastically connected to the second slider, both ends of the lifting seat are provided with a clamping mechanism cooperating with the second slider, a reverse shaft is rotatably provided in the base, two third sliders and a second circulation groove are provided on the reverse shaft, a cross rod group is provided between the third slider and the lifting seat, a third gear is rotatably provided at one end of the base, a first gear is rotatably provided on the positive rotation shaft, a second gear is rotatably provided on the reverse shaft, a positive ratchet is provided on the first gear, a positive pawl is provided on the positive rotation shaft, a reverse ratchet is provided on the second gear, and a reverse pawl is provided on the reverse shaft.

2. The elevator handrail welding positioning tool according to claim 1 is characterized in that: The ends of the third sliders that are close to each other are elastically connected to the fourth slider, a bottom plate is provided below the reversal shaft, a connecting rod is rotatably provided between the fourth slider and the bottom plate, a plurality of blocking tubes are provided on the bottom plate, a limiting plate is elastically connected below the bottom plate, and a plurality of suction cups cooperating with the blocking tubes are provided on the limiting plate.

3. The elevator handrail welding positioning tool according to claim 2 is characterized in that: A first spring is arranged between the first slider and the second slider, a second spring is arranged between the third slider and the fourth slider, and a plurality of third springs are arranged between the bottom plate and the limiting plate.

4. The elevator handrail welding positioning tool according to claim 2, characterized in that: The bottom of the base is provided with a through groove matched with the limiting plate.

5. The elevator handrail welding positioning tool according to claim 1, characterized in that: The third gear is connected to the output shaft of the driving member, and the driving member is arranged on a side wall at one end of the base.

6. The elevator handrail welding positioning tool according to claim 1, characterized in that: The clamping mechanisms each include two opposite clamping plates, the clamping plates are rotatably connected to the lifting seat, and a torsion spring is provided at the connection between the clamping plates and the lifting seat.

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