CN210620975U

CN210620975U - Descending and overrun safety protection device

Info

Publication number: CN210620975U
Application number: CN201920942778.2U
Authority: CN
Inventors: 虞海宝; 刘礼寅; 吴华刚; 张传棋; 廖兵; 陈良胜; 汤冀文; 张聪; 王韬
Original assignee: Hubei Aibo Intelligent Equipment Co ltd
Current assignee: Hubei Aibo Intelligent Equipment Co ltd
Priority date: 2019-06-21
Filing date: 2019-06-21
Publication date: 2020-05-26
Anticipated expiration: 2029-06-21

Abstract

The utility model discloses a descending overrun safety protection device; the device comprises a base mounting plate and a base frame, wherein the base frame is provided with a horizontal plate, and one side of the base frame, which is close to the horizontal plate, is provided with a travel switch; the horizontal plate is provided with a through hole, a spring fixing sleeve is arranged above the through hole, and a movable shaft is arranged in the through hole and penetrates through the spring fixing sleeve; one end of the movable shaft is movably connected above the horizontal plate through a spring assembly, the other end of the movable shaft extends downwards and is sleeved with a protection plate, and a touch plate is arranged above the protection plate; a trigger connecting rod of the travel switch is lapped on the trigger plate; the tail end of the lower part of the movable shaft is connected with a connecting rod, and a working supporting plate and a supporting plate lower limit are sequentially connected below the connecting rod; the device is simple in overall structure, can be used repeatedly, can rapidly trigger the travel switch when falling exceeds the limit, is high in response speed, can rapidly stop equipment from falling, and protects workpieces and equipment.

Description

Descending and overrun safety protection device

Technical Field

The utility model relates to protection device technical field, concretely relates to decline transfinite safety arrangement.

Background

The electrodeposition coating is a coating method in which particles such as pigments and resins in an electrophoretic fluid are directionally transferred by an applied electric field and deposited on a base surface of one of electrodes. The invention of the principle of electrophoretic coating is at the end of the 20 th century and the 30 th century, but the development of the technology and the industrial application thereof are that after 1963, electrophoretic coating is a special coating forming method developed in the last 30 years, and is a construction process which has the most practical significance for water-based paint. The water-soluble and nontoxic paint has the characteristics of water solubility, no toxicity, easy automation control and the like, and can be rapidly and widely applied to industries such as automobiles, building materials, hardware, household appliances and the like.

With the development of the automobile industry, advanced automobile coating, in particular car coating technology and equipment, can be rapidly applied in China. Generally, an electrophoretic coating device forms a coating production line for continuous production by means of a suspension conveyor and other processes (pretreatment-drying), wherein the upper layer is a circulating operation system, and the lower layer is an electrophoresis tank; when the electrophoresis tank is in work, a workpiece to be electrophoresed or a vehicle body is sunk into the electrophoresis tank for electrophoretic coating, the position of the workpiece which is sunk is difficult to observe due to the large electrophoresis tank and poor transparency, and the workpiece is easy to touch the bottom after being excessively sunk, so that the workpiece is damaged or the inner wall of the electrophoresis tank is damaged; the existing multi-station electrophoresis process has no descending protection, and when problems occur, great damage is brought to an electrophoresis cell and workpieces, so that the whole electrophoresis line stops production, and great loss is caused.

Disclosure of Invention

The utility model aims at providing a decline transfinite safety arrangement to the problem that prior art exists.

In order to achieve the above object, the utility model adopts the following technical scheme:

a descending and over-limit safety protection device comprises a base mounting plate, wherein a base frame is mounted on the base mounting plate, a horizontal plate is arranged on the base frame, and a travel switch is mounted on one side, close to the horizontal plate, of the base frame; the horizontal plate is provided with a through hole, a spring fixing sleeve is arranged above the through hole, and a movable shaft is arranged in the through hole and penetrates through the spring fixing sleeve; one end of the movable shaft is movably connected above the horizontal plate through a spring assembly, the other end of the movable shaft extends downwards and is sleeved with a protection plate, and a touch plate is arranged above the protection plate; a trigger connecting rod of the travel switch is lapped on the trigger plate; the lower end of the movable shaft is connected with a connecting rod, and a working supporting plate and a supporting plate lower limit are sequentially connected below the connecting rod.

When the workpiece and the working supporting plate fall and exceed the limit in the descending process, a connecting rod connected with one side of the working supporting plate moves downwards along with the working supporting plate to drive a movable shaft above the working supporting plate to move downwards, a spring assembly is gradually compressed, a touch plate fixedly arranged on the movable shaft also descends along with the spring assembly, so that a trigger connecting rod lapped on the touch plate rotates downwards, when the trigger connecting rod reaches the limit position, the trigger connecting rod triggers a travel switch, the travel switch sends an instruction to stop equipment to continue descending, the working supporting plate in the electrophoresis tank descends to the lower limit position of the supporting plate and is supported by the lower limit position of the supporting plate, and the workpiece is protected.

At the moment, a worker does not need to observe the position of a workpiece in the electrophoresis tank, the worker can know that the workpiece is over-limited when falling directly through the falling over-limit safety protection device, the control device ascends, the connecting rod ascends to jack the movable shaft to move upwards, the compressed spring assembly quickly resets to drive the touch plate on the movable shaft to move upwards quickly, when the touch plate returns to the normal working position, the trigger connecting rod returns to the normal working position, the travel switch normally works, and the worker can know that the workpiece in the electrophoresis tank returns to the normal working position.

The touch plate can drive the touch connecting rod to trigger the travel switch, so that the protection effect is realized, the protection plate plays a role in protecting the touch plate on the one hand, the touch plate is prevented from being in direct contact with the horizontal plate, the upper limit effect is also realized on the other hand, and the movable shaft is driven to move out from the upper side when the compressed spring is reset.

The reset stroke of the spring assembly is equivalent to the stroke triggered by the travel switch, so that the travel switch can accurately and timely return to a normal working state when the spring assembly is reset.

Further, the spring assembly comprises a spring and a spring seat; one end of the spring is sleeved and fixed on the spring fixing sleeve, and the other end of the spring is fixed in the spring seat; the spring seat is reversely sleeved on the upper portion of the movable shaft, and the spring seat is fixed on the movable shaft through a slotted nut. The spring fixing sleeve is matched with the spring seat to fix the spring, and circumferential jumping of the spring can be reduced.

Further, the top end of the movable shaft is provided with an external thread and a horizontal pin hole, the external thread is screwed with the slotted nut, and the slotted nut presses the spring seat and a spring below the spring seat; and a split pin is arranged on the slotted nut and penetrates through the horizontal pin hole. The slotted nut can effectively fix the spring assembly, prevent the spring seat and the spring from popping up from the upper part, and ensure that the position of the spring assembly is unchanged for a long time in the long-term reciprocating motion process, so that the lower touch plate is effectively contacted with the trigger connecting rod and the stability is ensured; the device is suitable for alternating load occasions.

Furthermore, the protection plate is an insulating protection plate, so that the phenomenon that electrophoresis liquid to be charged in the electrophoresis tank has negative influence on the trigger plate and the trigger connecting rod to influence the accuracy of the travel switch is avoided; the protection shield horizontally welds on the loose axle, ensures to connect firm reliable.

Furthermore, a pair of parallel clamping plates is arranged at the tail end of the movable shaft, and the top end of the connecting rod is arranged between the clamping plates and fixedly connected through a bolt. The structure is convenient to disassemble, and components above the movable shaft are installed and maintained.

Furthermore, the base mounting plate is arranged on the upper layer of the equipment frame to be operated according to the requirement, so that the observation and the operation are convenient; the connecting rod extends downwards to the lower layer of the equipment frame to be operated; the lower layer of the equipment frame to be operated is a workpiece operation area, and the workpiece is arranged on the working supporting plate.

Compared with the prior art, the beneficial effects of the utility model are that: 1. the descending and over-limit safety protection device is simple in overall structure, can be used repeatedly, can quickly trigger the travel switch when descending and over-limit, is high in response speed, can quickly stop equipment from descending, and reduces subsequent adverse effects; 2. the descending over-limit safety protection device can judge the position of a workpiece in an electrophoresis tank through a travel switch, and solves the problem that the position of the workpiece cannot be directly observed; 3. when the descending exceeds the limit, the travel switch is matched with the lower limit of the supporting plate to protect the workpiece; 4. on one hand, the insulation protection plate plays a role in protecting the touch plate, on the other hand, the insulation protection plate also plays a role in upper limit, and the movable shaft is prevented from being driven to move out from the upper side when the compressed spring is reset.

Drawings

FIG. 1 is a schematic view of the overall installation structure of a descending over-limit safety protection device of the present invention;

FIG. 2 is an enlarged schematic view of the safety protection device at the A position of the present invention;

FIG. 3 is a schematic view of a descending limit operating position of the descending over-limit safety protection device of the present invention;

FIG. 4 is a schematic diagram of a normal operating position of the descending over-limit safety protection device of the present invention;

in the figure: 1. a base mounting plate; 2. a base frame; 3. a horizontal plate; 4. a spring fixing sleeve; 5. a movable shaft; 6. a protection plate; 7. a touch plate; 8. a travel switch; 9. a trigger link; 10. a connecting rod; 11. a working pallet; 12. limiting under the supporting plate; 13. a spring; 14. a spring seat; 15. a slotted nut; 16. a cotter pin; 17. an equipment frame; 18. a workpiece; 19. an equipment lifting component.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1, a descending overrun safety protection device is mounted on an equipment frame 17 (only a part of the equipment frame is shown in the figure) through a base mounting plate 1, wherein the equipment frame 17 is divided into two layers, the lower layer is an electrophoresis tank, and the upper layer is a running system; the workpiece 18 will be placed on the work pallet 11 and lowered in the bath with the equipment lift assembly 19. The basic mounting plate 1 is arranged on the upper layer of the equipment frame 17 to be operated, so that the observation and the operation are convenient; the links 10 extend down to the lower level of the equipment frame 17.

The first embodiment is as follows:

as shown in fig. 1 and 2, a descending over-limit safety protection device comprises a base mounting plate 1, wherein a base frame 2 is mounted on the base mounting plate 1, a horizontal plate 3 is arranged on the base frame 2, and a travel switch 8 is mounted on one side of the base frame 2 close to the horizontal plate 3; a through hole is formed in the horizontal plate 3, a spring fixing sleeve 4 is arranged above the through hole, and a movable shaft 5 is arranged in the through hole and penetrates through the spring fixing sleeve 4; one end of the movable shaft 5 is movably connected above the horizontal plate 3 through a spring assembly, the other end of the movable shaft 5 extends downwards and is sleeved with a protection plate 6, and a touch plate 7 is arranged above the protection plate 6; the trigger connecting rod 9 of the travel switch 8 is lapped on the trigger plate 7; the tail end of the lower part of the movable shaft 5 is connected with a connecting rod 10, and a working supporting plate 11 and a supporting plate lower limit 12 are sequentially connected below the connecting rod 10. The travel switch model number is WL01CA 12.

According to the falling over-limit safety protection device, in a normal working state, a workpiece to be subjected to electrophoresis is placed on the working supporting plate, the working supporting plate is located in an electrophoresis tank, and the working supporting plate is located at a normal working position.

The trigger plate 7 can drive the trigger connecting rod 9 to trigger the travel switch 8, so that the protection effect is realized, the protection plate plays a role in protecting the trigger plate on the one hand, the direct contact between the trigger plate and the horizontal plate is avoided, the upper limit effect is also played on the other hand, and the movable shaft is driven to move out from the upper side when the compressed spring is reset.

The reset stroke of the spring assembly is equivalent to the stroke triggered by the travel switch, so that the travel switch can accurately and timely reset when the spring assembly resets.

Further, the spring assembly comprises a spring 13 and a spring seat 14; one end of the spring 13 is sleeved and fixed on the spring fixing sleeve 4, and the other end of the spring 13 is fixed in the spring seat 14; the spring seat 14 is reversely sleeved on the upper part of the movable shaft 5, and the spring seat 14 is fixed on the movable shaft 5 through a slotted nut 15. The spring fixing sleeve 4 is matched with the spring seat 14 to fix the spring 13, and the circumferential runout of the spring 13 can be reduced.

Further, the top end of the movable shaft 5 is provided with an external thread and a horizontal pin hole, the external thread is screwed with the slotted nut 15, and the slotted nut 15 presses the spring seat 14 and the spring 13 below the spring seat; the slotted nut 15 is provided with a cotter pin 16, and the cotter pin 16 passes through the horizontal pin hole. The slotted nut 15 can effectively fix the spring assembly, prevent the spring seat 14 and the spring 13 from popping up from the upper part, and ensure the position of the spring assembly to be unchanged for a long time in the long-term reciprocating motion process, so that the lower touch plate 7 is effectively contacted with the trigger connecting rod 9 and the stability is ensured; the device is suitable for alternating load occasions.

Furthermore, the protection plate 6 is an insulating protection plate, so that the electrophoresis liquid to be charged in the electrophoresis tank is prevented from causing negative influence on the touch plate 7 and the trigger connecting rod 9 and influencing the accuracy of the travel switch 8; the protection plate 6 is horizontally welded on the movable shaft 5, so that stable and reliable connection is ensured.

Further, the tail end of the movable shaft 5 is provided with a pair of parallel clamping plates, and the top end of the connecting rod 10 is arranged between the clamping plates and fixedly connected through a bolt. The structure is convenient to disassemble, and components above the movable shaft are installed and maintained.

Example two:

when a workpiece and a working supporting plate fall, once the falling and the exceeding of the limit occur, as shown in fig. 3, the falling and the exceeding of the limit safety protection device is in a falling and exceeding limit triggering state, and the triggering connecting rod 9 triggers a travel switch to send out an exceeding limit instruction, so that the equipment stops falling continuously; the spring 13 is in a compressed state.

The connecting rod 10 connected with one side of the working supporting plate moves downwards along with the working supporting plate to drive the movable shaft 5 above the working supporting plate to move downwards, the spring assembly is gradually compressed, the touch plate 7 fixedly installed on the movable shaft 5 also descends along with the spring assembly, so that the trigger connecting rod 9 lapped on the touch plate 7 rotates downwards, when the trigger connecting rod 9 reaches a limit position, the trigger connecting rod 9 triggers the travel switch 8, the travel switch 8 sends an instruction to stop the equipment from continuously descending, the working supporting plate 11 in the electrophoresis tank descends to the lower limit position 12 of the supporting plate and is supported by the lower limit position 12 of the supporting plate, and the workpiece 18 is protected.

Example three:

as shown in fig. 4, a descending over-limit safety protection device is in a normal working state, a travel switch is not triggered by abnormal descending, and a trigger connecting rod 9 is obliquely and upwards lapped on a trigger plate 7 at the moment; the protective plate 6 abuts against the horizontal plate 3 from below to limit the touch plate 7 at this position, and the spring 13 above the protective plate is in a relaxed state; and the workpieces in the electrophoresis tank are in normal working positions and electrophoresis operation is carried out.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A descending and over-limit safety protection device comprises a base mounting plate, and is characterized in that a base frame is mounted on the base mounting plate, a horizontal plate is arranged on the base frame, and a travel switch is mounted on one side, close to the horizontal plate, of the base frame; the horizontal plate is provided with a through hole, a spring fixing sleeve is arranged above the through hole, and a movable shaft is arranged in the through hole and penetrates through the spring fixing sleeve; one end of the movable shaft is movably connected above the horizontal plate through a spring assembly, the other end of the movable shaft extends downwards and is sleeved with a protection plate, and a touch plate is arranged above the protection plate; a trigger connecting rod of the travel switch is lapped on the trigger plate; the lower end of the movable shaft is connected with a connecting rod, and a working supporting plate and a supporting plate lower limit are sequentially connected below the connecting rod.

2. The descent overrun safety protection device of claim 1, wherein the spring assembly comprises a spring, a spring seat; one end of the spring is sleeved and fixed on the spring fixing sleeve, and the other end of the spring is fixed in the spring seat; the spring seat is reversely sleeved on the upper portion of the movable shaft, and the spring seat is fixed on the movable shaft through a slotted nut.

3. The descent overrun safety guard of claim 2, wherein the top end of the movable shaft is provided with an external thread on which the slotted nut is screwed and a horizontal pin hole, the slotted nut pressing against the spring seat and a spring therebelow; and a split pin is arranged on the slotted nut and penetrates through the horizontal pin hole.

4. The descent overrun safety guard of claim 1, wherein the protection plate is an insulating protection plate, the protection plate being welded horizontally to the movable shaft.

5. The descent ultralimit safety protection device of claim 1, wherein the movable shaft has a pair of parallel clamping plates at an end thereof, and the top end of the connecting rod is disposed between the clamping plates and fixedly connected thereto by a bolt.

6. The descent overrun safety guard of claim 1, wherein the base mounting plate is mounted on an upper level of the equipment frame to be operated, the link extending downwardly to a lower level of the equipment frame to be operated; the lower layer of the equipment frame to be operated is a workpiece operation area, and the workpiece is arranged on the working supporting plate.