Grinding device for wheelchair frame production

Abstract

The invention discloses a grinding device for wheelchair frame production, and particularly relates to the technical field of grinding devices for wheelchair machining, the grinding device comprises an operation table, the middle of the upper end of the operation table and the lower end of a supporting frame are jointly provided with a surface grinding structure, and double-side grinding structures in transmission connection with the surface grinding structure are arranged at the upper end of the operation table in a bilateral symmetry mode; a driving structure is fixedly connected to the rear portion of the upper end of the operation table, and a dust suction pipe communicating with the surface polishing structure is arranged at the upper end of the supporting frame. According to the grinding device for wheelchair frame production, a pipe is suspended under the action of the surface grinding structure, the bilateral grinding structures on the two sides are synchronously utilized to approach inwards to further support and fix a frame steel pipe, and then the bilateral grinding structures and the driving structure are utilized to grind the two sides of the steel pipe; and the surface grinding structure is synchronously used for grinding the surface of the steel pipe, dust, particles and burrs on the surface of the steel pipe are reduced, and the influence of the burrs on product quality is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of grinding devices for wheelchair processing, and in particular to a grinding device for wheelchair frame production. Background Art

[0002] In the production process of wheelchair frames, the surface treatment of pipes is particularly critical. The grinding process is an important step to ensure that the surface of the pipe is smooth and burr-free, which is directly related to the aesthetics and safety of the final product. However, the existing grinding devices have some shortcomings, such as inflexible position adjustment, which requires workers to frequently manually adjust the position of the wheelchair frame, which not only increases the workload, but also affects production efficiency and product quality.

[0003] Chinese patent announcement No. CN114905373B discloses a grinding device for wheelchair frame production, comprising a base plate, a fixing unit and a grinding unit; a load-bearing unit is installed on the front side of the upper surface of the base plate; the fixing unit comprises a hydraulic rod, a connecting plate, a mounting plate, a screw rod 1, a mounting block, a sliding block, a connecting block and a fixing assembly, wherein a connecting plate is vertically fixedly connected to the middle portion of the rear side of the upper surface of the base plate through a hydraulic rod, the front end of the connecting plate is fixedly connected to the mounting plate, the middle portion of the upper surface of the mounting plate is threadedly connected to the screw rod 1 through a screw hole, the upper end of the screw rod 1 is fixedly connected to a handle, the lower end of the screw rod 1 extends through the screw hole to the lower side of the mounting plate, and is rotatably connected to the middle portion of the upper surface of the mounting block through a bearing, and sliding grooves are respectively provided at equal angles on the side surfaces of the mounting block.

[0004] Although the grinding device provided in the above-mentioned document can quickly replace grinding rods of different specifications and adjust the position of the grinding rod according to the conditions of different frame surfaces to perform grinding work evenly, in actual use, the device cannot fix the pipe and during the grinding process, the device is not provided with corresponding related structures that can grind on both sides, and cannot grind the welding surfaces and cutting surfaces on both sides. Summary of the invention

[0005] The main purpose of the present invention is to provide a grinding device for wheelchair frame production, which can effectively solve the problem that the existing device cannot effectively fix the pipe and cannot synchronously grind the processing surfaces on both sides.

[0006] To achieve the above object, the technical solution adopted by the present invention is: A grinding device for wheelchair frame production, comprising an operating table, the upper end of the operating table is fixedly connected to a support frame, the middle of the upper end of the operating table and the lower end of the support frame are jointly provided with a surface grinding structure, the upper end of the operating table is symmetrically provided with a double-sided grinding structure transmission-connected to the surface grinding structure, the rear part of the upper end of the operating table is fixedly connected to a driving structure, and the upper end of the support frame is provided with a dust suction pipe connected to the surface grinding structure; The driving structure includes a mounting plate fixedly connected to the upper end of the operating table, the inner surface of the mounting plate is symmetrically connected to sprocket one for rotation, the outer surfaces of the two sprocket ones are commonly meshed with a chain belt, the inner surface of the chain belt is symmetrically meshed with sprocket two, the front ends of the two sprockets two are fixedly connected to a connecting shaft three that is transmission-connected to the double-sided grinding structure, the outer surface of the connecting shaft three is rotationally connected to a tensioning wheel group that is slidingly connected to the inner surface of the mounting plate, the inner surface of the tensioning wheel group is tightly attached to the outer surface of the chain belt, the rear end of the mounting plate is fixedly connected to a driving motor two, the output end of the driving motor two passes through the rear end of the driving motor two, extends to the front end of the driving motor two, and is transmission-connected to one of the sprockets one.

[0007] Preferably, the surface grinding structure includes a surface grinding component that is symmetrically slidably connected front and back on the upper end of the operating table, a support component is provided in the middle part of the upper end of the operating table located between the two surface grinding components, and a compression component connected to the dust suction pipe is slidably connected at the lower end of the support frame corresponding to the position of the support component.

[0008] Preferably, the supporting assembly includes a crank handle rotatably connected to the front end of the operating table, the rear end of the crank handle is fixedly connected to a bidirectional threaded rod rotatably connected to the inner cavity of the operating table, the outer surface of the bidirectional threaded rod is symmetrically threaded with a wedge block at the front and rear ends, and the upper ends of the two wedge blocks are provided with a supporting table slidably connected to the inner cavity of the operating table, the upper ends of the support tables penetrate the inner cavity of the operating table and extend to the upper end of the operating table, the two ends of the two support tables close to each other are commonly fixedly connected with a connecting plate, the lower end of the connecting plate is fixedly connected with a compression spring 1 fixedly connected to the upper end of the operating table, the middle part of the outer edge surface of the bidirectional threaded rod is transmission connected with a reversing gear set, the output shafts on both sides of the reversing gear set are symmetrically transmission connected with threaded rod 2, and the outer surfaces of the two threaded rods are respectively threadedly connected to adjacent double-sided grinding structures.

[0009] Preferably, the compression assembly includes a slider 1 symmetrically distributed on the left and right and slidably connected to the inner surface of the support frame, the lower ends of the two sliders are rotatably connected to a connecting rod 2, the ends of the two connecting rods 2 away from the slider 1 are jointly rotatably connected to a compression plate, the inner surface of the compression plate is symmetrically rotatably connected to a contact wheel, the top wall of the inner surface of the compression plate is fixedly connected to a dust chamber, the lower end of the inner surface of the dust chamber is linearly distributed and fixedly connected, and the dust pipe passes through the upper end of the compression plate and extends to the inner cavity of the dust chamber.

[0010] Preferably, the surface grinding assembly includes a support block slidably connected to the upper end of the operating table and a driving motor fixedly connected to the upper end of the operating table, a lower end of the support block is threadedly connected to the outer surface of the wedge block by a threaded block, both left and right ends of the support block are rotatably connected to a connecting rod, the middle parts of the ends of the two connecting rods close to each other are rotatably connected to an axial bracket fixedly connected to the upper end of the operating table, the ends of the two connecting rods away from the support block are rotatably connected to a grinding roller, the inner surface of one of the connecting rods is rotatably connected to a connecting shaft, the outer surface of the connecting shaft is connected to the outer surface of the grinding roller by a transmission belt; the connecting shafts on both sides are connected by a transmission belt, and one of the connecting shafts is fixedly connected to the output end of the driving motor.

[0011] Preferably, the double-sided grinding structure includes a pushing assembly threadedly connected to the outer surface of the adjacent threaded rod two, a support frame slidably connected to the upper end of the operating table is provided on the side of the pushing assembly close to the threaded rod two, a coaxial reversing gear set transmission-connected to the adjacent connecting shaft three is provided on the inner surface of the support frame, a side grinding assembly is jointly provided on the inner surface of the coaxial reversing gear set and the end of the support frame close to the threaded rod two, and a linkage member slidably connected to the support frame is fixedly connected to the upper end of the support frame.

[0012] Preferably, the pushing assembly includes a second support block threadedly connected to two adjacent threaded rods, the second support block is fixedly connected to the support frame via a spring telescopic rod on one side close to the support frame, the upper part of one end of the second support block close to the support frame is fixedly connected to a hollow shaft slidably connected to the side grinding assembly, the end of the hollow shaft close to the support frame is fixedly connected to a second compression spring, and the end of the second compression spring close to the support frame is rotatably connected to a fixed slip ring fixedly connected to the side grinding assembly.

[0013] Preferably, the linkage member includes a connecting rod four fixedly connected to the upper end of the support frame, the upper end of the connecting rod four is fixedly connected to a slider two slidably connected to the inner surface of the support frame, the inner surface of the slider two is slidably connected to a push rod, the outer surface of the push rod is fixedly connected to a compression spring four fixedly connected to the slider two, and the end of the push rod away from the support frame is fixedly connected to the slider one.

[0014] Preferably, the side grinding assembly includes a connecting shaft 2 fixedly connected to the forward output end of the coaxial reverse gear set, and the end of the connecting shaft 2 away from the coaxial reverse gear set is fixedly connected to a grinding wheel, the inner surface of the grinding wheel is provided with a driving shaft fixedly connected to the reverse output end of the coaxial reverse gear set, the outer surface of the driving shaft is fixedly connected to the inner surface of the fixed slip ring, and the outer surface of the grinding wheel is provided with a support.

[0015] Preferably, the support member includes a limit rod slidably connected to the inner surface of the driving shaft and a compression spring three fixedly connected to the end of the driving shaft away from the grinding wheel and sleeved on the outer surface of the limit rod, the end of the compression spring three away from the driving shaft is fixedly connected to a movable shaft slidably connected to the outer surface of the limit rod, the driving shaft and the outer surfaces of the movable shaft are both annularly distributed and rotatably connected with a plurality of connecting rods three, the ends of two connecting rods three on the same side away from the driving shaft are rotatably connected to an arc plate together, and the end of the movable shaft away from the driving shaft is fixedly connected to a positioning plate rotatably connected to the grinding wheel.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention makes the pipe suspended in the air through the surface grinding structure, and simultaneously uses the double-sided grinding structures on both sides to move inward to further support and fix the frame steel pipe, and then uses the double-sided grinding structure and the driving structure to grind both sides of the steel pipe, and simultaneously uses the surface grinding structure to grind the surface of the steel pipe to reduce dust, particles and burrs on the surface, ensure the processing accuracy in the subsequent welding and painting processes, and reduce the impact of burrs on product quality.

[0017] 2. The present invention supports the wheelchair frame steel pipe by means of the support assembly, and during the grinding process, the steel pipe is supported by the grinding rollers on the front and rear sides by means of the cooperation of the support assembly and the surface grinding assembly. At the same time, the support platform is lowered to make the pipe suspended in the air, and the position of the pipe is fixed by means of the cooperation of the compression assembly and the grinding rollers on both sides, so as to facilitate the subsequent grinding operation.

[0018] 3. The present invention utilizes the action of the reversing gear set to transmit the rotational power of the wedge block to the threaded rods 2 on both sides, and drives the pushing components on both sides to slide in the inner cavity of the operating table through the action of the threaded rods 2. While sliding, the pushing components and the supporting frame are squeezed to push the side grinding components toward the pipe direction through the supporting frame, and the driving structure is used to drive the coaxial reverse gear set to rotate, and the coaxial reverse gear set is used to drive the side grinding components to operate, thereby grinding both sides of the pipe.

[0019] 4. The present invention cooperates with the pushing assembly and the side grinding assembly. After the grinding wheel is attached to the surface of the pipe, the driving shaft is driven to continue to move inward through the extrusion of the hollow shaft and the compression spring 2, and the arc plate is further driven to expand outward and fit to the inner wall of the pipe through the cooperation of the support member and the driving shaft, and the pipe and the grinding wheel are driven to rotate in the opposite direction through the action of the coaxial reverse gear set, so that both sides of the pipe are synchronously ground.

[0020] 5. The present invention utilizes the cooperation of the linkage and the compression assembly. Before grinding, the push rod is used to push the slider 1 to drive the connecting rods 2 on both sides to convert from the inclined direction to the horizontal direction, thereby driving the compression plate to move downward until it is pressed on the upper part of the outer surface of the pipe. The position of the pipe is fixed by the action of the contact wheel and the slider 1 in cooperation with the grinding roller. At the same time, the dust generated by grinding on the surface of the pipe is cleaned and absorbed by the cleaning brush in the dust chamber in cooperation with the suction effect of the dust suction pipe, and sent to the external dust collection equipment through the dust suction pipe, thereby reducing the dust residue on the surface of the pipe and providing convenience for subsequent processing operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the surface grinding structure of the present invention; Figure 3 It is a structural schematic diagram of the support assembly of the present invention; Figure 4 It is a schematic diagram of the connection relationship between the surface grinding assembly and the threaded rod 2 of the present invention; Figure 5 It is a schematic structural diagram of the surface grinding assembly of the present invention; Figure 6 It is a structural schematic diagram of the driving structure of the present invention; Figure 7 It is a structural schematic diagram of the double-sided grinding structure of the present invention; Figure 8 It is a schematic structural diagram of the side grinding assembly of the present invention; Fig. 9 It is a schematic diagram of the explosion effect of the support member of the present invention; Fig.10 It is a structural schematic diagram of the support member of the present invention; Fig.11 It is an enlarged schematic diagram of the local structure at A in the figure of the present invention; Fig.12 It is a schematic structural diagram of the compression assembly of the present invention.

[0022] In the figure: 1. operating table; 2. surface grinding structure; 21. support assembly; 211. support table; 212. connecting plate; 213. compression spring 1; 214. wedge block; 215. bidirectional threaded rod; 216. crank; 217. threaded rod 2; 218. reversing gear set; 22. surface grinding assembly; 221. support block 1; 222. axis support; 223. connecting rod 1; 224. grinding roller; 225. connecting shaft 1; 226. driving motor 1; 23. pressing assembly; 231. slider 1; 232. connecting rod 2; 233. pressing plate; 234. contact wheel; 235. dust suction chamber; 236. cleaning brush; 3. double-sided grinding structure; 31. pushing assembly; 311. support block 2; 312. hollow shaft ;313, compression spring two;314, fixed slip ring;32, coaxial reverse gear set;33, side grinding assembly;331, grinding wheel;332, support member;3321, arc plate;3322, connecting rod three;3323, movable shaft;3324, limit rod;3325, compression spring three;3326, positioning plate;333, driving shaft;334, connecting shaft two;34, linkage member;341, connecting rod four;342, slider two;343, push rod;344, compression spring four;35, support frame;4, driving structure;41, driving motor two;42, sprocket one;43, chain belt;44, mounting plate;45, tensioning wheel set;46, sprocket two;47, connecting shaft three;5, dust suction pipe;6, support frame. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0024] Embodiment 1, as Figure 1 As shown, a grinding device for wheelchair frame production includes an operating table 1, the upper end of the operating table 1 is fixedly connected to a support frame 6, a surface grinding structure 2 is jointly provided at the middle of the upper end of the operating table 1 and the lower end of the support frame 6, a double-sided grinding structure 3 transmission-connected to the surface grinding structure 2 is symmetrically provided at the upper end of the operating table 1, a driving structure 4 is fixedly connected to the rear part of the upper end of the operating table 1, and a dust suction pipe 5 connected to the surface grinding structure 2 is provided at the upper end of the support frame 6.

[0025] During the operation of this embodiment, the wheelchair frame pipe fittings are first placed on the upper part of the surface grinding structure 2, and are suspended in the air by the action of the surface grinding structure 2, and the double-sided grinding structures 3 on both sides are simultaneously used to move inward to further support and fix the frame steel pipes, and then the double-sided grinding structure 3 and the driving structure 4 are used to grind both sides of the steel pipe, and the surface grinding structure 2 is simultaneously used to grind the surface of the steel pipe to reduce dust, particles and burrs on its surface, thereby ensuring the processing accuracy in the subsequent welding and painting processes and reducing the impact of burrs on product quality.

[0026] Embodiment 2: Based on embodiment 1, this embodiment supports the wheelchair frame steel pipe through the function of the support component 21, and during the grinding process, the steel pipe is supported by the grinding rollers 224 on the front and rear sides by the cooperation of the support component 21 and the surface grinding component 22. At the same time, the support platform 211 descends to make the pipe suspended in the air, and the position of the pipe is fixed by the cooperation of the compression component 23 and the grinding rollers 224 on both sides, so as to facilitate the subsequent grinding operation.

[0027] Specifically, to achieve the support and surface polishing of the wheelchair frame steel pipe, refer to Figure 2 The surface grinding structure 2 includes a surface grinding component 22 that is symmetrically slidably connected to the front and rear ends of the upper end of the operating table 1. A support component 21 is provided in the middle part of the upper end of the operating table 1 between the two surface grinding components 22. The lower end of the support frame 6 is slidably connected to a compression component 23 that is connected to the dust suction pipe 5 corresponding to the position of the support component 21.

[0028] Further, to achieve support for the wheelchair frame steel pipe, refer to Figure 3 and Figure 4 The support assembly 21 includes a crank 216 rotatably connected to the front end of the operating table 1, and a bidirectional threaded rod 215 rotatably connected to the inner cavity of the operating table 1 is fixedly connected at the rear end of the crank 216. The outer surface of the bidirectional threaded rod 215 is symmetrically threaded with a wedge block 214, and the upper ends of the two wedge blocks 214 are provided with a support table 211 slidably connected to the inner cavity of the operating table 1. The upper ends of the support tables 211 penetrate the inner cavity of the operating table 1 and extend to the upper end of the operating table 1. The ends of the two support tables 211 close to each other are commonly fixedly connected with a connecting plate 212, and the lower end of the connecting plate 212 is fixedly connected with a compression spring 1 213 fixedly connected to the upper end of the operating table 1. The middle part of the outer edge of the bidirectional threaded rod 215 is transmission-connected with a reversing gear set 218, and the output shafts on both sides of the reversing gear set 218 are symmetrically transmission-connected with threaded rods 217, and the outer surfaces of the two threaded rods 217 are respectively threadedly connected to the adjacent bilateral grinding structures 3.

[0029] The bidirectional threaded rod 215 can be driven to rotate by shaking the crank 216. During the rotation process, the threads of the bidirectional threaded rod 215 and the wedge blocks 214 drive the wedge blocks 214 on both sides to move away from each other. At the same time, the connecting plate 212 and the compression spring 213 are used to prompt the support platform 211 to move downward and slide into the inner cavity of the operating table 1. At this time, the support platform 211 is separated from the pipe, and the surface grinding components 22 on both sides are moved inward under the action of the bidirectional threaded rod 215 and supported under the two sides of the pipe, so that the pipe is suspended in the air.

[0030] Further, in order to achieve the polishing of the pipe and support the pipe when the support platform 211 descends, refer to Figure 4 and Figure 5The surface grinding assembly 22 includes a support block 221 slidably connected to the upper end of the operating table 1 and a driving motor 226 fixedly connected to the upper end of the operating table 1. The lower end of the support block 221 is threadedly connected to the outer surface of the wedge block 214 through a threaded block. The left and right ends of the support block 221 are rotatably connected to connecting rods 223. The middle parts of the ends of the two connecting rods 223 close to each other are rotatably connected to an axial support 222 fixedly connected to the upper end of the operating table 1. The ends of the two connecting rods 223 away from the support block 221 are rotatably connected to a grinding roller 224. The inner surface of one of the connecting rods 223 is rotatably connected to a connecting shaft 225. The outer surface of the connecting shaft 225 is connected to the outer surface of the grinding roller 224 by winding a transmission belt; the connecting shafts 225 on both sides are connected by winding a transmission belt, and one of the connecting shafts 225 is fixedly connected to the output end of the driving motor 226.

[0031] The lower parts of the support platforms 211 on both sides are threadedly connected to the wedge block 214. During the rotation of the wedge block 214, the support platforms 211 on both sides move away from each other, thereby driving the upper sides of the connecting rods 223 on both sides to approach each other through the leverage of the axial support 222. During this process, the grinding rollers 224 on both sides are driven to approach each other until they fit the lower part of the outer surface of the pipe. The synchronous support platforms 211 gradually move downward during this process, and the pipe will be suspended in the air under the support of the grinding rollers 224 on both sides, preparing for subsequent grinding.

[0032] Synchronously, during the operation of the driving motor 226, the grinding rollers 224 on both sides can be driven to rotate through the action of the transmission belt and the connecting shaft 225 to grind the outer surface of the pipe.

[0033] Embodiment 3: Based on embodiment 2, this embodiment further utilizes the action of the reversing gear set 218 to transmit the rotational power of the wedge block 214 to the threaded rods 217 on both sides, and drives the pushing components 31 on both sides to slide in the inner cavity of the operating table 1 through the action of the threaded rods 217. While sliding, the pushing components 31 and the support frame 35 are squeezed to push the side grinding components 33 toward the direction of the pipe, and the driving structure 4 is used to drive the coaxial reverse gear set 32 ​​to rotate, and the coaxial reverse gear set 32 ​​is used to drive the side grinding components 33 to operate, so as to grind both sides of the pipe.

[0034] Specifically, in order to realize the operation of driving the double-sided grinding structure 3 to grind both sides of the pipe, Figure 6The driving structure 4 includes a mounting plate 44 fixedly connected to the upper end of the operating table 1, the inner surface of the mounting plate 44 is symmetrically connected to a sprocket 1 42 for rotation, the outer surfaces of the two sprockets 1 42 are commonly meshed with a chain belt 43, the inner surface of the chain belt 43 is symmetrically meshed with a sprocket 2 46, the front ends of the two sprockets 2 46 are fixedly connected to a connecting shaft 3 47 which is transmission-connected to the double-sided grinding structure 3, the outer surface of the connecting shaft 3 47 is rotationally connected to a tensioning wheel group 45 which is slidingly connected to the inner surface of the mounting plate 44, the inner surface of the tensioning wheel group 45 is in close contact with the outer surface of the chain belt 43, the rear end of the mounting plate 44 is fixedly connected to a driving motor 2 41, the output end of the driving motor 2 41 passes through the rear end of the driving motor 2 41 and extends to the front end of the driving motor 2 41 and is transmission-connected to one of the sprockets 1 42.

[0035] In order to facilitate the insertion and removal of pipes, the double-sided grinding structures 3 on both sides need to be able to separate from the pipes, which inevitably requires left and right movement. To ensure transmission efficiency, a tensioning wheel group 45 sliding in the inner cavity of the mounting plate 44 is installed on the periphery of the sprocket 2 46. The tensioning wheel group 45 can always press the chain belt 43 so that it engages with the outer surface of the sprocket 2 46, thereby ensuring that the sprocket 2 46 can still transmit while following the left and right movement of the double-sided grinding structure 3.

[0036] Further, to achieve grinding of the pipe from both sides, see Figure 6 and Figure 7 The double-sided grinding structure 3 includes a pushing assembly 31 threadedly connected to the outer surface of the adjacent threaded rod 217, a support frame 35 slidably connected to the upper end of the operating table 1 is provided on the side of the pushing assembly 31 close to the threaded rod 217, a coaxial reverse gear set 32 ​​transmission-connected to the adjacent connecting shaft 3 47 is provided on the inner surface of the support frame 35, a side grinding assembly 33 is commonly provided on the inner surface of the coaxial reverse gear set 32 ​​and one end of the support frame 35 close to the threaded rod 217, and a linkage member 34 slidably connected to the support frame 6 is fixedly connected to the upper end of the support frame 35.

[0037] The above-mentioned coaxial reverse gear set 32 ​​is a conventional coaxial rotation transmission structure in the prior art, which is specifically composed of three bevel gears meshing in pairs and a mounting bracket, wherein the bracket is U-shaped, and its three inner surfaces are rotatably connected to a bevel gear. During the rotation of the bevel gears, the rotation directions of the two relative bevel gears are opposite, thereby achieving coaxial reversal by driving the two devices to rotate respectively through the two bevel gears. The above-mentioned structure has been widely used in the prior art. In the present invention, it is only used to drive the side grinding assembly 33 to operate, and its specific operating principle and internal structure are no longer displayed or elaborated.

[0038] Embodiment 4. This embodiment is based on embodiment 3. Through the cooperation of the pushing assembly 31 and the side grinding assembly 33, after the grinding wheel 331 is in contact with the surface of the pipe, the driving shaft 333 is driven to continue to move inward through the extrusion of the hollow shaft 312 and the compression spring 2 313, and further through the cooperation of the support member 332 and the driving shaft 333, the arc plate 3321 is driven to expand outward and contact with the inner wall of the pipe, and synchronously through the action of the coaxial reverse gear set 32, the pipe and the grinding wheel 331 are driven to rotate in the opposite direction, thereby synchronously grinding both sides of the pipe.

[0039] Specifically, in order to drive the support frames 35 and the side grinding assemblies 33 on both sides to move inward and thereby clamp the pipe, refer to Figure 8 The pushing assembly 31 includes a supporting block 311 threadedly connected to the adjacent threaded rod 217. The side of the supporting block 311 close to the supporting frame 35 is fixedly connected to the supporting frame 35 through a spring telescopic rod. The upper part of one end of the supporting block 311 close to the supporting frame 35 is fixedly connected to a hollow shaft 312 slidingly connected to the side grinding assembly 33. The end of the hollow shaft 312 close to the supporting frame 35 is fixedly connected to a compression spring 313. The end of the compression spring 313 close to the supporting frame 35 is rotatably connected to a fixed slip ring 314 fixedly connected to the side grinding assembly 33.

[0040] The support block 211 is threadedly connected to the threaded rod 217, and during the rotation of the threaded rod 217, the support blocks 211 on both sides will approach each other, and thereby push the support frame 35, the coaxial reverse gear set 32 ​​and the side grinding assembly 33 toward the pipe through the spring telescopic rod and the hollow shaft 312, the compression spring 213 and the action, so that the side grinding assembly 33 enters the interior of the pipe, and cooperates with the action of the compression spring 213 and the hollow shaft 312 to make the side grinding assembly 33 open to support and fix the pipe internally.

[0041] Further, in order to grind the side of the pipe and drive the pipe and the grinding wheel 331 to rotate in the opposite direction during the grinding process, refer to Figure 8 , Fig. 9 and Fig.10 The side grinding assembly 33 includes a second connecting shaft 334 fixedly connected to the forward output end of the coaxial reverse gear set 32, and a grinding wheel 331 is fixedly connected to one end of the second connecting shaft 334 away from the coaxial reverse gear set 32. A driving shaft 333 fixedly connected to the reverse output end of the coaxial reverse gear set 32 ​​is provided on the inner surface of the grinding wheel 331. The outer surface of the driving shaft 333 is fixedly connected to the inner surface of the fixed slip ring 314, and a support member 332 is provided on the outer surface of the grinding wheel 331.

[0042] The second connecting shaft 334 is connected to the positive output end of the support member 332, and rotates forward synchronously with the coaxial reverse gear set 32, and drives the grinding wheel 331 to rotate forward during the rotation process, thereby grinding both sides of the pipe; Synchronously, the drive shaft 333 is located inside the connecting shaft 334 but has no connection with the connecting shaft 334. The drive shaft 333 and the reverse output end of the coaxial reverse gear set 32 ​​slide against each other. When the reverse gear of the coaxial reverse gear set 32 ​​rotates, the drive shaft 333 is driven to rotate synchronously. However, when the hollow shaft 312 pushes the compression spring 313, the drive shaft 333 is pushed to slide inside the coaxial reverse gear set 32 ​​through the fixed slip ring 314, thereby driving the support member 332 to open inside the pipe.

[0043] Further, in order to drive the support member 332 to open inside the pipe to support and fix the pipe internally, refer to Fig.10 The support member 332 includes a limit rod 3324 slidably connected to the inner surface of the driving shaft 333 and a compression spring three 3325 fixedly connected to the end of the driving shaft 333 away from the grinding wheel 331 and sleeved on the outer surface of the limit rod 3324, the end of the compression spring three 3325 away from the driving shaft 333 is fixedly connected to the movable shaft 3323 slidably connected to the outer surface of the limit rod 3324, the outer surfaces of the driving shaft 333 and the movable shaft 3323 are both annularly distributed with a plurality of connecting rods three 3322 rotatably connected, the ends of the two connecting rods three 3322 on the same side away from the driving shaft 333 are rotatably connected to the arc plate 3321, and the end of the movable shaft 3323 away from the driving shaft 333 is fixedly connected to the positioning plate 3326 rotatably connected to the grinding wheel 331.

[0044] When the grinding wheel 331 fits the inner wall of the pipe, under the action of the grinding wheel 331 and the positioning plate 3326, the movable shaft 3323 stops moving. At this time, the hollow shaft 312 continues to approach the pipe, and the spring telescopic rod connected to the support frame 35 at the lower part of the support block 211 is compressed. The hollow shaft 312 continues to push the fixed sliding ring 314 and the drive shaft 333 towards the pipe direction through the compression spring 213. In this process, the drive shaft 333 and the movable shaft 3323 approach each other. At this time, the compression spring 3325 is compressed, and the connecting rod 3322 on both sides will be converted from a horizontal state to a vertical state due to the mutual approach of the drive shaft 333 and the movable shaft 3323, thereby driving the arc plate 3321 away from the drive shaft 333 until the limit rod 3324 contacts the inner wall of the pipe and fits tightly. At this time, the hollow shaft 312 can no longer push the fixed sliding ring 314, and will be gradually compressed until the shaking of the crank 216 is stopped.

[0045] Embodiment 5. Based on embodiment 4, this embodiment utilizes the cooperation between the linkage part 34 and the compression assembly 23. Before grinding, the push rod 343 is used to push the slider 1 231 so that it drives the connecting rods 232 on both sides to convert from an inclined direction to a horizontal direction, thereby driving the compression plate 233 to move downward until it is pressed on the upper part of the outer surface of the pipe. The position of the pipe is fixed by the action of the contact wheel 234 and the slider 1 231 in cooperation with the grinding roller 224. At the same time, the cleaning brush 236 in the dust chamber 235 cooperates with the exhaust action of the dust suction pipe 5 to clean and absorb the dust generated on the surface of the pipe due to grinding, and send it to the external dust collection equipment through the dust suction pipe 5, so as to reduce the dust residue on the surface of the pipe and provide convenience for subsequent processing operations.

[0046] Specifically, in order to realize synchronous driving of the pressing component 23 to press and limit the pipe, refer to Fig.11 The linkage member 34 includes a connecting rod 4 341 fixedly connected to the upper end of the support frame 35, a slider 2 342 slidably connected to the inner surface of the support frame 6 is fixedly connected to the upper end of the connecting rod 4 341, a push rod 343 is slidably connected to the inner surface of the slider 2 342, a compression spring 4 344 fixedly connected to the outer surface of the push rod 343 is fixedly connected to the slider 2 342, and the end of the push rod 343 away from the support frame 35 is fixedly connected to the slider 1 231.

[0047] The connecting rod four 341 will move together with the support frame 35. During the process, the slider two 342 connected to the connecting rod four 341 will push the push rod 343 to move in the direction of the pipe through the compression spring four 344, and thereby push the sliders one 231 on both sides to approach each other. When the slider one 231 is in place, the slider two 342 continues to move with the support frame 35, but the compression spring four 344 will be gradually compressed until the support frame 35 stops moving.

[0048] Further, in order to achieve the compression limit of the pipe and the cleaning of the grinding dust on its surface, refer to Fig.12 The compression assembly 23 includes a slider 231 symmetrically distributed on the left and right and slidingly connected to the inner surface of the support frame 6. The lower ends of the two sliders 231 are rotatably connected to the connecting rod 232. The two connecting rods 232 are rotatably connected to the compression plate 233 at one end away from the slider 231. The inner surface of the compression plate 233 is symmetrically rotated with a contact wheel 234. The top wall of the inner surface of the compression plate 233 is fixedly connected to a dust collection chamber 235. The lower end of the inner surface of the dust collection chamber 235 is linearly distributed and fixedly connected to a plurality of cleaning brushes 236. The dust collection pipe 5 passes through the upper end of the compression plate 233 and extends to the inner cavity of the dust collection chamber 235.

[0049] During the movement of the slider 231, the connecting rods 232 on both sides will gradually change from an inclined state to a vertical state, thereby driving the compression plate 233 to move downward. The dust suction pipe 5 is a telescopic pipe that can adapt to the compression plate 233 at different heights. The compression plate 233 continues to descend until the contact wheel 234 contacts the surface of the pipe. At this time, the dust suction chamber 235 and the cleaning brush 236 inside it are both attached to the inner wall of the pipe. During the rotation and grinding of the pipe, the cleaning brush 236 will clean the grinding dust contaminated inside the pipe. The cleaned dust will be sucked into the external equipment under the action of the dust suction pipe 5 to prevent the dust from affecting the grinding effect.

[0050] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A grinding device for wheelchair frame production, comprising an operating table (1), characterized in that: The upper end of the operating table (1) is fixedly connected to a support frame (6); a surface grinding structure (2) is provided at the middle of the upper end of the operating table (1) and the lower end of the support frame (6); a double-sided grinding structure (3) which is transmission-connected to the surface grinding structure (2) is symmetrically provided at the upper end of the operating table (1); a driving structure (4) is fixedly connected to the rear end of the upper end of the operating table (1); and a dust suction pipe (5) which is in communication with the surface grinding structure (2) is provided at the upper end of the support frame (6); The driving structure (4) comprises a mounting plate (44) fixedly connected to the upper end of the operating table (1); the inner surface of the mounting plate (44) is symmetrically connected to a sprocket wheel one (42) for rotation; the outer surfaces of the two sprocket wheels one (42) are commonly meshed with a chain belt (43); the inner surface of the chain belt (43) is symmetrically meshed with a sprocket wheel two (46); the front ends of the two sprocket wheels two (46) are fixedly connected to a connecting shaft three (47) which is transmission-connected to the double-sided grinding structure (3); the outer surface of the connecting shaft three (47) is rotationally connected to a tensioning wheel group (45) which is slidably connected to the inner surface of the mounting plate (44); the inner surface of the tensioning wheel group (45) is in close contact with the outer surface of the chain belt (43); the rear end of the mounting plate (44) is fixedly connected to a driving motor two (41); the output end of the driving motor two (41) passes through the rear end of the driving motor two (41) and extends to the front end of the driving motor two (41) and is transmission-connected to one of the sprocket wheels one (42).

2. A grinding device for wheelchair frame production according to claim 1, characterized in that: The surface grinding structure (2) comprises a surface grinding assembly (22) symmetrically slidably connected to the front and rear ends of the upper end of the operating table (1); a support assembly (21) is provided in the middle of the upper end of the operating table (1) and located between the two surface grinding assemblies (22); and a compression assembly (23) connected to the dust suction pipe (5) is slidably connected to the lower end of the support frame (6) corresponding to the position of the support assembly (21).

3. A grinding device for wheelchair frame production according to claim 2, characterized in that: The support assembly (21) comprises a crank handle (216) rotatably connected to the front end of the operating table (1); the crank handle (216) is fixedly connected to a bidirectional threaded rod (215) rotatably connected to the inner cavity of the operating table (1) at the rear end; the bidirectional threaded rod (215) is symmetrically threadedly connected to a wedge block (214) on the outer surface front and back; the upper ends of the two wedge blocks (214) are each provided with a support table (211) slidably connected to the inner cavity of the operating table (1); the upper end of the support table (211) passes through the inner cavity of the operating table (1) and extends to the upper surface of the operating table (1). The ends of the two support platforms (211) close to each other are fixedly connected to a connecting plate (212); the lower end of the connecting plate (212) is fixedly connected to a compression spring 1 (213) fixedly connected to the upper end of the operating table (1); the middle part of the outer surface of the bidirectional threaded rod (215) is transmission-connected to a reversing gear set (218); the output shafts on both sides of the reversing gear set (218) are symmetrically transmission-connected to threaded rods 2 (217); and the outer surfaces of the two threaded rods 2 (217) are respectively threadedly connected to adjacent double-sided grinding structures (3).

4. A grinding device for wheelchair frame production according to claim 3, characterized in that: The compression assembly (23) comprises a slider (231) symmetrically distributed on the left and right and slidably connected to the inner surface of the support frame (6); the lower ends of the two sliders (231) are both rotatably connected to the connecting rod (232); the ends of the two connecting rods (232) away from the slider (231) are rotatably connected to the compression plate (233); the inner surface of the compression plate (233) is symmetrically rotatably connected to the contact wheel (234); the top wall of the inner surface of the compression plate (233) is fixedly connected to the dust chamber (235); the lower end of the inner surface of the dust chamber (235) is linearly distributed and fixedly connected to a plurality of cleaning brushes (236); and the dust pipe (5) passes through the upper end of the compression plate (233) and extends to the inner cavity of the dust chamber (235).

5. A grinding device for wheelchair frame production according to claim 4, characterized in that: The surface grinding assembly (22) comprises a support block (221) slidably connected to the upper end of the operating table (1) and a drive motor (226) fixedly connected to the upper end of the operating table (1); the lower end of the support block (221) is threadedly connected to the outer surface of the wedge block (214) via a threaded block; both left and right ends of the support block (221) are rotatably connected to a connecting rod (223); the middle parts of the ends of the two connecting rods (223) close to each other are rotatably connected to an axial support (226) fixedly connected to the upper end of the operating table (1). 22), one end of the two connecting rods (223) away from the supporting block (221) is rotatably connected to a grinding roller (224), the inner surface of one of the connecting rods (223) is rotatably connected to a connecting shaft (225), and the outer surface of the connecting shaft (225) is connected to the outer surface of the grinding roller (224) by winding a transmission belt; the connecting shafts (225) on both sides are connected by winding a transmission belt, and one of the connecting shafts (225) is fixedly connected to the output end of a driving motor (226).

6. A grinding device for wheelchair frame production according to claim 5, characterized in that: The double-sided grinding structure (3) comprises a pushing assembly (31) threadedly connected to the outer surface of the adjacent second threaded rod (217); a support frame (35) slidably connected to the upper end of the operating table (1) is provided on the side of the pushing assembly (31) close to the second threaded rod (217); a coaxial reverse gear set (32) drivingly connected to the adjacent third connecting shaft (47) is provided on the inner surface of the support frame (35); a side grinding assembly (33) is provided on the inner surface of the coaxial reverse gear set (32) and one end of the support frame (35) close to the second threaded rod (217); and a linkage member (34) slidably connected to the support frame (6) is fixedly connected to the upper end of the support frame (35).

7. A grinding device for wheelchair frame production according to claim 6, characterized in that: The pushing assembly (31) comprises a second support block (311) threadedly connected to a second adjacent threaded rod (217); a side of the second support block (311) close to the support frame (35) is fixedly connected to the support frame (35) via a spring telescopic rod; an upper portion of one end of the second support block (311) close to the support frame (35) is fixedly connected to a hollow shaft (312) slidably connected to the side grinding assembly (33); an end of the hollow shaft (312) close to the support frame (35) is fixedly connected to a second compression spring (313); and an end of the second compression spring (313) close to the support frame (35) is rotatably connected to a fixed sliding ring (314) fixedly connected to the side grinding assembly (33).

8. A grinding device for wheelchair frame production according to claim 7, characterized in that: The linkage member (34) comprises a connecting rod four (341) fixedly connected to the upper end of the support frame (35); the upper end of the connecting rod four (341) is fixedly connected to a slider two (342) slidably connected to the inner surface of the support frame (6); the inner surface of the slider two (342) is slidably connected to a push rod (343); the outer surface of the push rod (343) is fixedly connected to a compression spring four (344) fixedly connected to the slider two (342); and one end of the push rod (343) away from the support frame (35) is fixedly connected to the slider one (231).

9. A grinding device for wheelchair frame production according to claim 7, characterized in that: The side grinding assembly (33) comprises a second connecting shaft (334) fixedly connected to the forward output end of the coaxial reverse gear set (32); an end of the second connecting shaft (334) away from the coaxial reverse gear set (32) is fixedly connected to a grinding wheel (331); a driving shaft (333) fixedly connected to the reverse output end of the coaxial reverse gear set (32) is disposed on the inner surface of the grinding wheel (331); an outer surface of the driving shaft (333) is fixedly connected to the inner surface of the fixed slip ring (314); and a support member (332) is disposed on the outer surface of the grinding wheel (331).

10. A grinding device for wheelchair frame production according to claim 9, characterized in that: The support member (332) comprises a limit rod (3324) slidably connected to the inner surface of the driving shaft (333) and a compression spring (3325) fixedly connected to one end of the driving shaft (333) away from the grinding wheel (331) and sleeved on the outer surface of the limit rod (3324); one end of the compression spring (3325) away from the driving shaft (333) is fixedly connected to a movable shaft (3323) slidably connected to the outer surface of the limit rod (3324); the outer surfaces of the driving shaft (333) and the movable shaft (3323) are both annularly distributed and rotatably connected to a plurality of connecting rods (3322); one end of two connecting rods (3322) on the same side away from the driving shaft (333) is rotatably connected to an arc plate (3321); and one end of the movable shaft (3323) away from the driving shaft (333) is fixedly connected to a positioning plate (3326) rotatably connected to the grinding wheel (331).

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