A swing lever pre-treatment spreader and method of use thereof

Abstract

The application discloses a swing-rod type pretreatment lifting appliance and a use method thereof. The lifting appliance frame is provided with two groups of electric hoists at the upper end, and two groups of lifting appliance supporting feet are hinged at the lower end of the lifting appliance frame. The swing direction of the lifting appliance supporting feet is consistent with the direction of the walking movement of the lifting appliance frame. Each group of the lifting appliance supporting feet is provided with a positioning and locking mechanism. The positioning and locking mechanism comprises a bottom plate, a supporting column connected to the outer side of the bottom plate, a transverse positioning support connected to the middle part of the bottom plate, and a longitudinal positioning support connected to the inner side of the bottom plate. The transverse positioning support is provided with a self-locking protrusion on one side of the supporting column. The hinged lifting appliance supporting feet always keep a vertical stress state, the strength requirement of the lifting appliance is reduced, and the vehicle body or the sliding bar does not need to be locked by another power execution mechanism, so that the manufacturing cost and the equipment failure rate are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile intelligent conveying system, and particularly relates to a swing lever type pretreatment lifting appliance and a use method thereof. BACKGROUND

[0002] The painting workshop plays an important role in the four production workshops of automobiles, and serves as a link between the previous and the next, aiming at preventing the automobile body from corrosion and prolonging the service life of the automobile body. In the pretreatment and electrophoresis stage before painting, multiple processes such as pre-cleaning, degreasing, water washing, electrophoresis and ion water washing are included. In these automobile body painting process flows, the mechanical transportation system of the automobile body automatically operates in each process with the automobile body. As a part of the mechanical transportation system of the automobile body, the automobile conveying lifting appliance has the function of conveying the white automobile body into the electrophoresis tank and moving the white automobile body in the electrophoresis tank to achieve the purpose of pretreatment. However, in the actual use process, due to the buoyancy of the liquid in the electrophoresis tank, the automobile body will float and separate from the positioning pin at the moment of entering the tank, resulting in many uncontrollable phenomena of the automobile body, affecting the work efficiency and reducing the product quality of the pretreatment process.

[0003] In view of the above problems, some auxiliary compression methods with pneumatic compression claws appear in the market. The automobile body or sliding shoe positioned by the positioning pin is compressed and fixed on the automobile conveying pretreatment lifting appliance by another set of compression mechanism to overcome the buoyancy of the liquid in the electrophoresis tank. The auxiliary compression method can effectively solve the above problems, but it will increase the manufacturing cost and the failure rate of the equipment, increase the control points of the entire painting conveying line, and need to configure more point PLC, further increasing the manufacturing cost. SUMMARY

[0004] Therefore, in order to overcome the shortcomings of the prior art, the present application provides a swing lever type pretreatment lifting appliance. The hinge lifting appliance supporting feet are arranged to form a swing lever, so that the lifting appliance supporting feet always maintain a vertical stress state, the force transmission efficiency is higher, and the strength requirement of the lifting appliance is reduced. At the same time, due to the change of the automobile body entering the tank mode and the positioning and locking mode, it is not necessary to additionally set a power execution mechanism to lock the automobile body or the sliding shoe, thereby reducing the manufacturing cost and the failure rate of the equipment.

[0005] In order to achieve the above purpose, the technical scheme of the present application is as follows:

[0006] A swing lever type pretreatment lifting appliance comprises a lifting appliance frame, two groups of electric hoists arranged at the upper end of the lifting appliance frame, and two groups of lifting appliance supporting feet hinged at the lower end of the lifting appliance frame, the swing direction of the lifting appliance supporting feet being consistent with the direction of the walking movement of the lifting appliance frame.

[0007] Each group of the lifting appliance supporting feet is provided with a positioning and locking mechanism, the positioning and locking mechanism comprising a bottom plate, a supporting column connected to the outer side of the bottom plate, a transverse positioning bracket connected to the middle part of the bottom plate, and a longitudinal positioning bracket connected to the inner side of the bottom plate, the transverse positioning bracket being provided with a self-locking protrusion on one side of the supporting column. The supporting column is used for supporting the skid, the transverse positioning bracket is used for transverse direction positioning of the skid, i.e. positioning in the direction of the movement of the lifting appliance frame, the longitudinal positioning bracket is used for longitudinal direction positioning of the skid, and the self-locking protrusion is used for locking of the skid, avoiding the skid from floating up due to the buoyancy of the liquid in the electrophoresis tank, so as to be separated from the positioning.

[0008] Preferably, the middle part of the upper end of the transverse positioning bracket is further provided with a positioning groove, the two sides of the positioning groove being arc-shaped, which plays a guiding role in the transverse direction, and the upper end of the longitudinal positioning bracket is provided in a slope shape, which plays a guiding role in the longitudinal direction, so that the skid is smoothly and stably slid to the designated position.

[0009] Further, the upper end of the supporting column is provided with a rubber supporting pad, the top of the rubber supporting pad being arc-shaped, which avoids hard contact between the skid and the lifting appliance and reduces noise during operation.

[0010] Further, each group of the lifting appliance supporting feet is provided with two or more groups of positioning and locking mechanisms, which are configured according to the actual width of the skid and the positioning requirements, so as to ensure that the skid is smoothly and accurately placed on the lifting appliance.

[0011] Further, the two side faces of the lifting appliance frame are provided with guiding assemblies, the guiding assemblies comprising a first roller set and a second roller set connected in a rolling manner. The arrangement of the first roller set and the second roller set avoids collision between the lifting appliance frame and the inner wall of the electrophoresis tank, reduces the running resistance, and ensures smooth movement of the lifting appliance frame in the electrophoresis tank.

[0012] Further, the lifting appliance supporting feet are provided in a U-shaped integrated structure, which forms a closed ring structure with the lifting appliance frame, and the structural strength is better.

[0013] The present application also provides a use method of the swing lever type pretreatment lifting appliance, which comprises the following steps:

[0014] S1, the electric hoist drives the lifting appliance to move, and when the lifting appliance moves to the skid position, the supporting column is located directly below the supporting block;

[0015] S2, the lifting appliance is gradually raised under the action of the electric hoist, the support column abuts against the top of the supporting block, the skid and the vehicle body on the skid are lifted; at the same time, the self-locking protrusion passes through the gap between the two locking buckles and is above the two locking buckles, the positioning shaft falls into the positioning groove, the transverse direction is positioned, the outer end surface of the positioning shaft abuts against the longitudinal positioning support under the action of the inclined surface on the upper end of the longitudinal positioning support, the longitudinal direction is positioned, and the skid is positioned, that is, the vehicle body is positioned;

[0016] S3, the electric hoist drives the lifting appliance carrying the skid and the vehicle body to move forward along the length direction of the electrophoresis tank, after reaching the specified station, the motor speed of the front electric hoist is slow, the motor speed of the rear electric hoist is fast, the lifting appliance gradually descends, and the lifting appliance frame, the skid and the vehicle body gradually enter the electrophoresis tank in an inclined manner; at this time, the horizontal distance between the two locking buckles is reduced, the self-locking protrusion is clamped in the locking buckle, and self-locking is realized;

[0017] S4, when the vehicle body enters the electrophoresis tank, the electric hoist adjusts the motor speed, so that the vehicle body is in a horizontal state for electrophoresis operation, at this time, the skid and the vehicle body are close to the lifting appliance under the action of gravity, and the positioning of the skid and the vehicle body is realized;

[0018] S5, after the electrophoresis is completed, the motor speed of the front electric hoist is slow, the motor speed of the rear electric hoist is fast, the lifting appliance gradually rises, and the lifting appliance frame, the skid and the vehicle body are in an opposite inclined manner and gradually leave the electrophoresis tank, that is, the electrophoresis operation of the vehicle body is completed. It gradually leaves the electrophoresis tank in an inclined manner, which can reduce the resistance of the liquid when the vehicle body rises, the liquid can flow out of the vehicle body more easily and quickly, the draining time is shortened, the equipment working efficiency and production capacity are improved, the liquid leakage phenomenon between the tanks is reduced, the cleanliness and utilization rate of various tank liquids are improved, and the product quality is improved.

[0019] The action principle of the present application is that when the lifting appliance with the vehicle body enters the tank and leaves the tank, the motor speed of the front and rear electric hoists is changed, the inclination of the lifting appliance is realized, the vehicle body enters the tank and leaves the tank in an inclined manner, the resistance of the liquid in the electrophoresis tank when the vehicle body enters the tank or leaves the tank is reduced, the liquid can flow out of the vehicle body more easily and quickly, and the time of entering the tank or draining is shortened; at the same time, since the vehicle body enters the tank in an inclined manner, the horizontal distance between the two guide protrusions on the side of the skid is reduced, the self-locking protrusion in the positioning and locking mechanism is clamped in the guide protrusion in the skid, that is, when the lifting appliance is inclined, the skid can realize self-locking.

[0020] The beneficial effects of the present application are: (1) the locking mechanism is simplified, any electrically controlled driving execution mechanism is not needed, and the locking and unlocking of the sliding bar can be realized completely by relying on mechanical structure, the manufacturing cost and the failure rate of the equipment are reduced; (2) by setting two sets of independent lifting appliance supporting feet and cooperating with the use of two groups of electric hoists, the angle of the vehicle body into the tank and out of the tank can be effectively changed, the resistance of liquid when the workpiece is into the tank or out of the tank is reduced, the liquid is more easily and conveniently flowed out of the vehicle body, the time of into the tank and draining is shortened, the working efficiency and the production capacity of the equipment are improved, the liquid flowing phenomenon between the tanks is reduced, thereby the cleanliness and the utilization rate of the individual tank liquid are improved, and the surface treatment quality of the vehicle body is improved; (3) by setting two sets of hinged lifting appliance supporting feet, the function of swinging of the lifting appliance is achieved, the parallelogram linkage mechanism arranged between the front and rear lifting appliance supporting feet of the traditional lifting appliance is changed, the structure is simplified, and the lightweight requirement is realized. At the same time, since the lifting appliance supporting feet always maintain the vertical stress state, the force transmission efficiency is higher, and the strength requirement of the lifting appliance is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0022] Figure 1 It is a structural schematic diagram of the present application;

[0023] Figure 2 It is a structural schematic diagram of the lifting appliance frame and the lifting appliance supporting foot in the present application;

[0024] Figure 3 It is a top view of Figure 2 ;

[0025] Figure 4 It is a structural schematic diagram of the positioning and locking mechanism in the present application;

[0026] Figure 5 It is a partial structural schematic diagram of the sliding bar;

[0027] Figure 6 It is a state schematic diagram when the lifting appliance is inclined into the tank;

[0028] Figure 7 It is a state schematic diagram when the lifting appliance is inclined out of the tank;

[0029] Figure 8 It is a partial enlarged structural schematic diagram of A in Figure 6 ;

[0030] In the figure, 100, lifting appliance frame, 200, electric hoist, 300, lifting appliance support foot, 400, positioning locking mechanism, 401, base plate, 402, support column, 403, transverse positioning support, 404, longitudinal positioning support, 405, self-locking protrusion, 406, positioning groove, 407, rubber support pad, 500, skid, 501, support block, 502, positioning shaft, 503, locking buckle, 600, vehicle body, 700, guide assembly, 701, first roller set, 702, second roller set. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0032] REFERENCE Figures 1 to 4 A swing lever type pretreatment lifting appliance includes a lifting appliance frame 100, two groups of electric hoists 200 are arranged at the upper end of the lifting appliance frame, and two groups of lifting appliance support feet 300 are hingedly connected to the lower end of the lifting appliance frame 100. The swing direction of the lifting appliance support feet 300 is consistent with the walking direction of the lifting appliance frame 100, that is, the front and back direction swing.

[0033] Two groups of positioning locking mechanisms 400 are arranged on each group of lifting appliance support feet 300. The positioning locking mechanism 400 includes a base plate 401, a support column 402 connected to the outer side of the base plate 401, a transverse positioning support 403 connected to the middle part of the base plate 401, and a longitudinal positioning support 404 connected to the inner side of the base plate 401. A self-locking protrusion 405 is arranged on one side of the support column 402. The support column 402 is used for supporting a skid 500, the transverse positioning support 403 is used for transverse direction positioning of the skid 500, that is, positioning in the moving direction of the lifting appliance frame 100, the longitudinal positioning support 404 is used for longitudinal direction positioning of the skid 500, and the self-locking protrusion 405 is used for locking the skid 500, so as to avoid the vehicle body 600 from floating up due to the buoyancy of the liquid in the electrophoresis tank, thereby separating from the positioning.

[0034] As Figure 1 and Figure 4As shown, the middle of the upper end of the transverse positioning bracket 403 is also provided with a positioning groove 406, the two sides of the positioning groove 406 are arc-shaped, which plays a guiding role in the transverse direction, the upper end of the longitudinal positioning bracket 404 is provided in a slope shape, which plays a guiding role in the longitudinal direction, the double guiding facilitates the sled 500 to smoothly and stably slide to the designated position. The upper end of the support column 402 is provided with a rubber supporting pad 407, the top of the rubber supporting pad 407 is arc-shaped, which avoids the hard contact between the sled 500 and the lifting appliance, and reduces the noise in the running process.

[0035] As shown in Figure 3 The two side faces of the lifting appliance frame 100 are provided with a guiding assembly 700, the guiding assembly 700 includes a first roller set 701 and a second roller set 702 connected in rolling. The first roller set 701 and the second roller set 702 are provided to avoid the collision between the lifting appliance frame 100 and the inner wall of the electrophoresis tank, reduce the running resistance, and ensure the smooth movement of the lifting appliance frame 100 in the electrophoresis tank.

[0036] As shown in Figure 2 The lifting appliance supporting leg 300 is provided in a U-shaped integrated structure, which forms a closed ring structure with the lifting appliance frame 100, and has better structural strength.

[0037] As shown in Figure 1 and Figure 5 The two sides of the sled 500 are provided with a supporting block 501, the middle of the outer side of the supporting block 501 is provided with a positioning shaft 502, the lower end of the outer side of the supporting block 501 is provided with a locking buckle 503, and the locking buckle is located at the lower end of the positioning shaft 502.

[0038] In use, first, the electric hoist 200 drives the lifting appliance to move, and when the lifting appliance moves to the position of the sled 500, the support column 402 is directly below the supporting block 501; the lifting appliance is gradually raised under the action of the electric hoist 200, the support column 402 abuts against the top of the supporting block 501, and the sled 500 and the vehicle body 600 on the sled 500 are lifted. At the same time, the self-locking protrusion 405 passes through the gap between the two locking buckles 503 and is above the two locking buckles 503, the positioning shaft 502 falls into the positioning groove 406, realizing the positioning in the transverse direction, and the outer end face of the positioning shaft 502 abuts against the longitudinal positioning bracket 404 under the action of the slope of the upper end of the longitudinal positioning bracket 404, realizing the positioning in the longitudinal direction. At this time, the sled 500 is completely positioned.

[0039] Then, the electric hoist 200 drives the lifting appliance carrying the skid 500 and the vehicle body 600 to move forward along the length direction of the electrophoresis tank, and after reaching the designated station, the motor of the front electric hoist 200 rotates slowly, the motor of the rear electric hoist 200 rotates fast, the lifting appliance gradually descends, and the lifting appliance frame 100, the skid 500 and the vehicle body 600 gradually enter the electrophoresis tank in an inclined manner (as shown in Figure 6 ). At this time, as shown in Figure 8 , the horizontal distance B between the two locking buckles 503 decreases, the self-locking protrusion 405 is clamped in the locking buckle 503, self-locking is realized, the skid 500 and the vehicle body 600 are prevented from being separated from the lifting appliance and losing control due to the buoyancy of the liquid in the electrophoresis tank.

[0040] After the electrophoresis is completed, the motor of the front electric hoist 200 rotates slowly, the motor of the rear electric hoist 200 rotates fast, the lifting appliance gradually rises, and the lifting appliance frame 100, the skid 500 and the vehicle body 600 are in an opposite inclined manner (as shown in Figure 7 ) and gradually leave the electrophoresis tank, which reduces the resistance of the liquid when the vehicle body 600 rises, the liquid can flow out of the vehicle body 600 more easily and quickly, the draining time is shortened, the equipment working efficiency and capacity are improved, the liquid leakage phenomenon between the tank bodies is reduced, the cleanliness and utilization rate of various tank liquids are improved, and thus the product quality is improved.

[0041] When the skid 600 is in a horizontal state, the horizontal distance B between the two locking buckles 503 is maximum, the self-locking protrusion 405 is located on the center line of the two locking buckles 503, and since the width of the self-locking protrusion 405 is smaller than the horizontal distance B at this time, the skid 600 and the lifting appliance can be separated.

[0042] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A swing lever pre-treatment spreader comprising a spreader frame, characterised in that, The upper end of the lifting tool frame is provided with two groups of electric hoists, and the lower end of the lifting tool frame is hingedly provided with two groups of lifting tool supporting feet, the swinging direction of the lifting tool supporting feet is consistent with the direction of the walking movement of the lifting tool frame; each group of the lifting tool supporting feet is provided with a positioning and locking mechanism, the positioning and locking mechanism comprises a bottom plate, a supporting column connected to the outer side of the bottom plate, a transverse positioning bracket connected to the middle part of the bottom plate, and a longitudinal positioning bracket connected to the inner side of the bottom plate, and the transverse positioning bracket is provided with a self-locking protrusion on one side of the supporting column; the supporting column is used for supporting the skid, the transverse positioning bracket is used for transverse positioning of the skid, the longitudinal positioning bracket is used for longitudinal positioning of the skid, and the self-locking protrusion is used for locking of the skid, so as to avoid the skid from floating up due to the buoyancy of the liquid in the electrophoresis tank, thereby being separated from the positioning; The two sides of the skid are provided with supporting blocks, the middle part of the outer side of the supporting blocks is provided with a positioning shaft, and the lower end of the outer side of the supporting blocks is provided with a locking buckle, and the locking buckle is located below the positioning shaft.

2. A swing lever pre-treatment spreader according to claim 1, characterised in that, The upper end of the transverse positioning bracket is further provided with a positioning groove, and the two sides of the positioning groove are in arc shape.

3. A swing lever pre-treatment spreader as claimed in claim 1, wherein, The upper end of the longitudinal positioning bracket is in inclined surface shape.

4. A swing lever pre-treatment spreader as claimed in claim 1, wherein, The upper end of the supporting column is provided with a rubber supporting pad.

5. A swing lever pre-treatment spreader according to claim 1, wherein, Each group of the lifting tool supporting feet is provided with more than two positioning and locking mechanisms.

6. A swing lever pre-treatment spreader according to claim 1, wherein, The two side surfaces of the lifting tool frame are provided with guide assemblies, and the guide assemblies comprise first and second rolling wheels which are connected in rolling mode.

7. A swing lever pre-treatment spreader according to claim 1, wherein, The lifting tool supporting feet are in U-shaped integrated structure.

8. The method of using a swing lever type pre-treatment spreader as claimed in any one of claims 1 to 7, wherein, It comprises the following steps: S1, the electric hoist drives the lifting tool to move, and when the lifting tool moves to the skid position, the supporting column is located directly below the supporting block; S2, the lifting tool is gradually raised under the action of the electric hoist, the supporting column abuts against the top of the supporting block, and the skid and the vehicle body on the skid are lifted; At the same time, the self-locking protrusion passes through the gap between the two locking buckles and is above the two locking buckles, the positioning shaft falls into the positioning groove, the transverse direction is positioned, the outer end surface of the positioning shaft abuts against the longitudinal positioning bracket under the action of the inclined surface of the upper end of the longitudinal positioning bracket, the longitudinal direction is positioned, and the skid is completely positioned at this time; S3, the electric hoist drives the lifting tool carrying the skid and the vehicle body to move forward along the length direction of the electrophoresis tank, and when reaching the specified position, the motor speed of the electric hoist at the front end is slow, the motor speed of the electric hoist at the rear end is fast, the lifting tool is gradually lowered, and the lifting tool frame, the skid and the vehicle body gradually enter the electrophoresis tank in an inclined manner; at this time, the horizontal distance between the two locking buckles is reduced, the self-locking protrusion is locked in the locking buckle, and self-locking is realized; S4, when the vehicle body is completely in the electrophoresis tank, the electric hoist adjusts the motor speed, so that the vehicle body is in a horizontal state for electrophoresis operation, and at this time, the skid and the vehicle body are tightly attached to the lifting tool under the action of the dead weight, so that the positioning of the skid and the vehicle body is realized. S5, after the electrophoresis is completed, the front end motor speed of the electric hoist is slow, the rear end motor speed of the electric hoist is fast, the lifting appliance gradually rises, the lifting appliance frame, the skid and the vehicle body are oppositely inclined and gradually leave the electrophoresis tank, and the electrophoresis of the vehicle body is completed.

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