Novel work fixture for welding tricycle

Abstract

The invention provides a novel work fixture for tricycle welding, and belongs to the technical field of welding equipment.The novel work fixture comprises a power assembly, a transmission assembly is installed on the power assembly, the two sides of the transmission assembly are both connected with communicating assemblies, and the communicating assemblies are connected with pipe body inner restraining assemblies respectively; and bridge bowl end restraint assemblies are connected to the pipe body inner restraint assemblies. The problems that an existing clamp is mostly manually controlled, synchronous and accurate positioning of a pipe body and the end of a bridge bowl cannot be achieved, coaxiality deviation of the pipe body and the end of the bridge bowl is prone to occurring, the quality after welding is too poor, even part abrasion is caused, loads during locking are not easy to control, pipe workpieces are prone to being damaged due to strong locking force, and the like are solved. Or the workpiece shifts during welding due to insufficient force, and the fixture structure is shaped and cannot be flexibly changed to adapt to parts with different specifications.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of welding equipment, and particularly relates to a novel tool clamp for welding a tricycle. BACKGROUND

[0002] The rear axle of a tricycle is a core transmission component for ensuring the driving stability and carrying capacity of the vehicle, and the pipe body of the rear axle of the tricycle is composed of a bridge bowl and a circular pipe welded on both sides of the bridge bowl. The pipe body and the bridge bowl are connected by welding. During the driving of the tricycle, the rear axle needs to bear the weight of the vehicle body, the impact of road bumps and the torque of power transmission for a long time. Therefore, the welding quality of the pipe body and the end part of the bridge bowl directly determines the service life and driving safety of the rear axle.

[0003] The existing welding of the bridge bowl and the pipe body is manual or clamped by a clamp. The existing clamp is manually controlled and cannot achieve synchronous and accurate positioning of the pipe body and the end part of the bridge bowl. The coaxiality deviation of the two is prone to occur, which causes poor welding quality and even causes component wear. The load during clamping is not easy to control. The pipe workpiece is damaged due to strong clamping force, or the workpiece is displaced during welding due to insufficient force. Moreover, the structure of the clamp is fixed and cannot be flexibly changed to adapt to components of different specifications. Therefore, a novel tool clamp for welding a tricycle is proposed. SUMMARY

[0004] This section aims to summarize some aspects of the embodiments of the present application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of the specification to avoid obscuring the purpose of this section, the abstract and the title. Such simplifications or omissions cannot be used to limit the scope of the present application.

[0005] In view of the following technical problems in the prior art: the existing clamp is manually controlled and cannot achieve synchronous and accurate positioning of the pipe body and the end part of the bridge bowl. The coaxiality deviation of the two is prone to occur, which causes poor welding quality and even causes component wear. The load during clamping is not easy to control. The pipe workpiece is damaged due to strong clamping force, or the workpiece is displaced during welding due to insufficient force. Moreover, the structure of the clamp is fixed and cannot be flexibly changed to adapt to components of different specifications.

[0006] To solve the above technical problems, the present application provides the following technical scheme: a novel tool clamp for welding a tricycle, comprising a power assembly, a transmission assembly is arranged on the power assembly, two communication assemblies are connected to the transmission assembly, a pipe body inner constraint assembly is connected to each communication assembly, and a bridge bowl end part constraint assembly is connected to the pipe body inner constraint assembly. The power assembly comprises an assembly seat, a pair of sliding ports are reserved on the assembly seat, one side of the sliding ports close to each other is provided with a rotating seat one fixedly connected to the assembly seat, one side of the sliding ports away from each other is provided with a rotating seat two fixedly connected to the assembly seat, the rotating seat two and the rotating seat one corresponding to each other are rotatably connected with a lead screw, and the lead screw is provided with a lead block.

[0007] By adopting the above technical scheme, the assembly seat provides an assembly basis for the whole tooling, the assembly seat can be assembled through an additional cylinder, so that the assembly seat can be displaced in height, the rotating seat one and the rotating seat two jointly define the rotating track of the lead screw, and the rotation of the lead screw is ensured, when the lead screw rotates, the lead block is connected with the lead screw, and the rotating motion is converted into linear motion, the sliding port limits the linear motion of the lead block, and deviation is avoided, and through the sequential connection of the power assembly, the transmission assembly, the communication assembly, the tube body internal constraint assembly and the bridge bowl end constraint assembly, a complete force and motion transmission path is constructed, and a structural basis is laid for subsequent three-wheeled vehicle rear bridge welding constraint.

[0008] Further, the power assembly further comprises a motor fixedly connected to the middle region of the lower wall of the assembly seat, the power end of the motor is fixedly connected with a shaft body penetrating through the assembly seat, the upper end of the shaft body is fixedly connected with a clamping umbrella disc one, one side of the pair of lead screws close to each other is fixedly connected with a clamping umbrella disc two, and one side of the pair of lead blocks away from each other is fixedly connected with a power strip.

[0009] By adopting the above technical scheme, the motor serves as a power source, transmits power to the clamping umbrella disc one through the shaft body, synchronously rotates the clamping umbrella disc one, rotates the clamping umbrella disc two, and further rotates the lead screw fixedly connected with the clamping umbrella disc two, so that the lead screw rotates to drive the lead block to move linearly along the sliding port, and the lead block drives the fixedly connected power strip to move synchronously.

[0010] Further, the clamping umbrella disc two and the clamping umbrella disc one are clamped with each other, the lead block is slidably connected with the cavity wall of the sliding port, and the power strip penetrates through the side wall of the assembly seat.

[0011] By adopting the above technical scheme, the clamping cooperation of the clamping umbrella disc two and the clamping umbrella disc one enables the power to be transmitted from the motor to the lead screw, and the power strip penetrates through the side wall of the assembly seat, so that the power strip can extend to the outside of the assembly seat and be connected with the transmission assembly.

[0012] Further, the transmission assembly comprises an assembly strip, the upper end of the assembly strip is fixedly connected with the power strip, the lower end of the assembly strip is fixedly connected with an assembly ring, the assembly ring is fixedly connected with a liquid storage barrel, the liquid storage barrel is slidably connected with a displacement circular platform, the power end of the air cylinder passes through the upper wall of the liquid storage barrel and is connected with the displacement circular platform, the upper wall of the displacement circular platform is fixedly connected with a double-joint rod, the periphery of the double-joint rod is provided with an elastic element one, the upper end of the elastic element one is connected with the upper part of the liquid storage barrel, the lower end of the elastic element one is fixedly connected with the upper wall of the displacement circular platform, the lower wall of the displacement circular platform is fixedly connected with one side of a traction rod one, the lower side of the traction rod one is fixedly connected with a receiving seat, the inner side of the receiving seat is fixedly connected with one side of a traction rod two.

[0013] By adopting the above technical scheme, the assembly strip is the connection core of the transmission assembly, and the linear power of the power assembly is transmitted to the whole transmission assembly through the fixed connection with the power strip. The assembly ring assembles the liquid storage barrel to ensure the stability of the liquid storage barrel. The air cylinder serves as a power source to push or pull the displacement circular platform to displace along the inner wall of the liquid storage barrel. The double-joint rod moves synchronously with the displacement circular platform to ensure the stability of the displacement of the displacement circular platform. The elastic element one is deformed elastically to assist in pulling the displacement circular platform back to the initial position. When the displacement circular platform moves, the fluid medium is compressed to be transmitted to the constraint assembly in the pipe body to lock the pipe body.

[0014] Further, the pipe body inner constraint assembly comprises a main hollow column fixedly connected with one side of the traction rod two away from the receiving seat, the peripheral wall of the main hollow column is provided with a plurality of circular shells one at equal intervals, the inner wall of the circular shell one is slidably connected with a T-shaped rod, one side of the T-shaped rod protruding out is slidably connected with a buffer rod one, and one side of the buffer rod one protruding out is fixedly connected with an arched abutting piece one.

[0015] By adopting the above technical scheme, the main hollow column is fixedly connected with the traction rod two to move together with the transmission assembly and provide an installation carrier for the circular shell one. The circular shell one is distributed at equal intervals to ensure that the subsequent constraint force is uniformly applied to the inner wall of the pipe body. The T-shaped rod can slide along the inner wall of the circular shell one to achieve the action of protruding outwards or being retracted inwards. During the outward protruding of the T-shaped rod, the buffer rod one moves together with the traction. The buffer rod one drives the arched abutting piece one to contact the inner wall of the pipe body. The curved structure of the arched abutting piece one can better fit the inner wall of the pipe body to increase the contact area and prevent the local force from being too large to damage the pipe body. Through the joint pressing of a plurality of arched abutting pieces one, the pipe body is stably constrained from the inside.

[0016] Further, one side of the T-shaped rod protruding out is reserved with a sliding cavity one, one side of the buffer rod one is in the sliding cavity one, the cavity wall of the sliding cavity one away from the buffer rod one is provided with a sensing element, and the sensing element is provided with an elastic element three between the buffer rod one.

[0017] By adopting the above technical scheme, the buffer rod one can freely slide in the sliding cavity one, when the arched abutting piece one is attached to the inner wall of the pipe body and subjected to opposite load, the buffer rod one will displace inwardly in the sliding cavity one, and the elastic member three will elastically deform during displacement of the buffer rod one, on the one hand, absorbing part of the impact force, avoiding excessive load during abutting, damaging the pipe body or the arched abutting piece one, on the other hand, keeping the arched abutting piece one attached to the inner wall of the pipe body all the time, enhancing the constraint stability, the inductive element detects the load of the buffer rod one in real time, reflecting the abutting force between the arched abutting piece one and the inner wall of the pipe body, the worker can change the protruding length of the T-shaped rod according to the feedback data of the inductive element, ensuring that the abutting force is in the appropriate range, meeting the constraint requirement and not damaging the workpiece.

[0018] Further, the bridge bowl end constraint assembly comprises a connecting strip connected with the lower edge of the assembly strip and sliding, the lower end of the connecting strip is fixedly connected with an outer hollow rod, one side of the outer hollow rod is connected with an inner sliding rod slidingly, the outer hollow rod is screwed with a compression bolt for constraining the sliding rod, the other side of the inner sliding rod is fixedly connected with a blocking ring, the blocking ring is provided with a sliding ring slidingly connected with the inner sliding rod away from the main body hollow column, the other side of the sliding ring away from the blocking ring is hingedly connected with one side of a plurality of transmission strips at equal intervals, the end of the inner sliding rod is fixedly connected with a plurality of supporting strips arranged at equal intervals, the inner side of the supporting strip is connected with a sliding T-shaped table slidingly, the other side of the sliding T-shaped table away from the inner sliding rod is fixedly connected with a linkage strip, the other side of the linkage strip away from the sliding T-shaped table is connected with a buffer rod two slidingly, the other side of the transmission strip is hingedly connected with the sliding T-shaped table, one side of the sliding ring close to the main body hollow column is fixedly connected with one side of an elastic member four, the other side of the elastic member four is fixedly connected with the main body hollow column, the inner wall of the main body hollow column is connected with a blocking disc slidingly arranged on the inner sliding rod, a plurality of fixed rods are fixedly connected between the blocking disc and the sliding ring.

[0019] By adopting the above technical scheme, the assembly strip of the transmission assembly is fixedly connected with the bridge bowl end part constraint assembly, the movement of the assembly strip can drive the bridge bowl end part constraint assembly to move, the inner sliding rod can slide along the inner wall of the outer hollow rod, the overall protruding length of the bridge bowl end part constraint assembly is changed to adapt to the constraint requirements of bridge bowls of different specifications, the blocking ring limits the sliding range of the sliding ring on the inner sliding rod, the elastic member four drives the sliding ring to move towards the main body hollow column by the elastic force, the sliding T-shaped table is driven to slide outwards along the sliding path of the supporting strip during the displacement of the sliding ring by the hinged transmission strip, the sliding T-shaped table drives the linkage strip to move together, the linkage strip drives the second buffer rod to abut against the bridge bowl end part, thereby achieving the constraint of the bridge bowl end part, the sealing disc bears the load applied by the fluid medium to drive the fixed rod to drive the sliding ring to slide, when different bridge bowls are adapted, the inner sliding rod is driven to slide in the outer hollow rod by loosening the compression bolt, the length of the inner sliding rod protruding from the main body hollow column at one end is changed, when the protruding length is longer, the blocking ring drives the sliding ring to move, when the protruding length is shorter, the elastic member four drives the sliding ring to move together with the blocking ring, so that the sliding ring is tightly attached to the blocking ring, thereby changing the orientation of the second arched abutting piece, and then adapting to bridge bowls of different specifications, and during the adjustment, the fluid medium flows correspondingly.

[0020] Further, the linkage strip is reserved with a sliding cavity two, one side of the second buffer rod is in the sliding cavity two, the second buffer rod and the cavity wall of the sliding cavity two are fixedly connected with an elastic member five, the supporting strip is reserved with a T-shaped cavity matched with the sliding T-shaped table, and the sliding T-shaped table is connected with the supporting strip through the concave cavity.

[0021] By adopting the above technical scheme, the second buffer rod can freely slide in the sliding cavity two, when the second buffer rod abuts against the inner wall of the bridge bowl end part and is subjected to an opposite load, the second buffer rod can be displaced towards the inside of the sliding cavity two, thereby preventing rigid collision from damaging the bridge bowl or the second buffer rod, the elastic member five can be matched to change the displacement of the second buffer rod to be more flexible and adapt to more specifications, and the T-shaped cavity of the supporting strip is matched with the structure of the sliding T-shaped table, thereby ensuring smooth sliding.

[0022] Further, the communication assembly comprises a connecting channel one, one side of the connecting channel one is connected with the liquid storage barrel, the other side of the connecting channel one is slidably connected with an inner channel, the inner channel is fixedly connected with the main body hollow column in communication, one side of the inner channel is connected with the connecting channel one, the lower wall of the main body hollow column is fixedly connected with one side of a connecting channel two, the other side of the connecting channel two is slidably connected with a displacement rod, the side of the displacement rod away from the connecting channel two is fixedly connected with a pressing piece, and the connecting channel two and the pressing piece are fixedly connected with an elastic member two.

[0023] By adopting the above technical scheme, the connecting channel one achieves fluid medium communication between the liquid storage barrel and the main body hollow column, when the displacement circular platform in the liquid storage barrel slips, the fluid content in the liquid storage barrel will change, the fluid is transmitted to the inside of the main body hollow column through the connecting channel one, which assists in driving the T-shaped rod to protrude out, the connecting channel can be used as a fluid flow channel to send the fluid into the connecting channel two to drive the displacement rod to protrude out and extend outward, during the constraint and welding of the pipe body and the bridge bowl, the pipe body is placed on the arched abutting piece one, the displacement rod pulls the pressing piece to touch the pipe body, which can press the pipe body, and the end of the pipe body and the bridge bowl are connected by pressing, which is beneficial to the action of welding, and the elastic element two pulls the displacement rod and the pressing piece back to the initial position through elastic return during the fluid recovery, which is beneficial to the removal of the workpiece after the welding is completed.

[0024] Further, the inner sliding rod passes through the receiving seat and the pulling rod two and is connected with the receiving seat in sliding mode.

[0025] By adopting the above technical scheme, the inner sliding rod passes through the receiving seat and the pulling rod two, so that the movement paths of the bridge bowl end constraint assembly and the pipe body inner constraint assembly are associated with each other but do not interfere with each other, ensuring that the two can act synchronously and respectively constrain the bridge bowl end and the pipe body, achieving cooperative fixing of the tricycle welding part, and the sliding connection of the inner sliding rod and the receiving seat allows the inner sliding rod to freely slide in the receiving seat, without affecting the movement of the receiving seat with the pulling rod one, and ensuring that the inner sliding rod can independently change the extension length to adapt to the constraint requirements of different specifications of workpieces.

[0026] The beneficial effects of the present application are: 1、The present application utilizes the precise transmission structure of the power assembly, utilizes the motor to drive the engagement of the engagement umbrella disc one and the engagement umbrella disc two, cooperates the pulling screw rod and the screw block to achieve linear motion, limits the deviation of the sliding opening, and adopts the equidistantly distributed circular shell one and arched abutting piece one for the pipe body inner constraint assembly, so that the curved structure can closely fit the inner wall of the pipe body, increase the fitting range to prevent local damage, and the sensing element detects the abutting force in real time and connects the industrial computer, and the fluid is transported through the cylinder to keep the constraint degree within the adaptive range, which prevents the displacement of the pipe body and the bridge bowl and prevents excessive locking to damage the workpiece, and the sliding cooperation of the inner sliding rod and the receiving seat ensures that the pipe body inner constraint assembly and the bridge bowl end constraint assembly act synchronously, effectively ensures the coaxiality of the pipe body and the bridge bowl, and reduces the deviation.

[0027] 2、The pressing bolt on the outer hollow rod in the bridge bowl end constraint assembly can flexibly adjust the extension length of the inner sliding rod, and cooperates the elastic element four to pull the sliding ring to follow the displacement of the blocking ring, which can quickly adapt to bridge bowls of different specifications.

[0028] Other features and advantages of the present application will be set forth in the description that follows, and in part will be apparent from the description, or can be learned by practice of the application. The purposes and other advantages of the present application will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without any creative work. Among them: Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present application; Figure 2 It is a schematic diagram of the top view structure of the embodiment of the present application; Figure 3 It is a schematic diagram of the front view cross-sectional structure of the embodiment of the present application; Figure 4 It is a schematic diagram of the inner constraint assembly structure of the pipe body of the embodiment of the present application; Figure 5 It is a schematic diagram of the cross-sectional structure of the inner constraint assembly of the pipe body of the embodiment of the present application; Figure 6 It is a schematic diagram of the cross-sectional structure of the circular shell of the embodiment of the present application; Figure 7 It is a schematic diagram of the cross-sectional structure of the supporting strip of the embodiment of the present application; Figure 8 It is a schematic diagram of the cross-sectional structure of the connecting channel two of the embodiment of the present application; Figure 9 It is a schematic diagram of the cross-sectional structure of the connecting channel one of the embodiment of the present application; 100, power assembly; 101, assembly seat; 102, sliding port; 103, rotating seat one; 104, rotating seat two; 105, motor; 106, engagement umbrella disc one; 107, screw block; 108, engagement umbrella disc two; 109, power strip; 1010, screw rod; 200, transmission assembly; 201, assembly strip; 202, assembly ring; 203, liquid storage barrel; 204, air cylinder; 205, elastic member one; 206, double-link rod; 207, displacement circular table; 208, traction rod one; 209, receiving seat; 2010, traction rod two; 300, connection assembly; 301, connection channel one; 3011, inner channel; 302, connection channel; 303, connection channel two; 304, displacement rod; 305, elastic member two; 306, pressing piece; 400, tube inner constraint assembly; 401, main body hollow column; 402, circular shell one; 403, T-shaped rod; 404, sensing element; 405, elastic member three; 406, buffer rod one; 407, arched abutting piece one; 500, bridge bowl end constraint assembly; 501, connection strip; 502, outer hollow rod; 503, inner sliding rod; 504, blocking ring; 505, sliding ring; 506, elastic member four; 507, supporting strip; 508, arched abutting piece two; 509, transmission strip; 5010, buffer rod two; 5011, elastic member five; 5012, linkage strip; 5013, sliding T-shaped table; 5014, blocking circular piece. DETAILED DESCRIPTION

[0030] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0031] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the concept of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0032] Secondly, "one embodiment" or "embodiment" referred to herein means that a specific feature, structure or characteristic can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is separate or alternative to other embodiments.

[0033] Thirdly, the present application is described in detail in conjunction with the schematic drawings, and in the detailed description of the embodiments of the present application, the cross-sectional view of the device structure is partially enlarged without the general proportion for the convenience of description, and the schematic drawings are only examples, which should not limit the scope of protection of the present application. In addition, three-dimensional spatial dimensions including length, width and depth should be included in actual manufacture.

[0034] Reference Figures 1-9 The embodiment of the present application provides a novel tool clamp for welding a tricycle, which comprises a power assembly 100, a transmission assembly 200 arranged on the power assembly 100, communication assemblies 300 connected to the two sides of the transmission assembly 200, and pipe body internal constraint assemblies 400 connected to the communication assemblies 300 respectively, and bridge bowl end constraint assemblies 500 connected to the pipe body internal constraint assemblies 400. The power assembly 100 comprises an assembly seat 101, a pair of sliding openings 102 are reserved on the assembly seat 101, a rotating seat one 103 is arranged on one side of the sliding openings 102 close to each other and is fixed on the assembly seat 101, a rotating seat two 104 is arranged on one side of the sliding openings 102 away from each other and is fixed on the assembly seat 101, a screw rod 1010 is rotatably connected between the rotating seat two 104 and the rotating seat one 103 arranged correspondingly, screw blocks 107 are screwed on the screw rod 1010, the assembly seat 101 provides an assembly basis for the whole tool, the assembly seat 101 can be assembled through an additional cylinder, so that the assembly seat 101 can be displaced in height, the rotating seat one 103 and the rotating seat two 104 jointly define the rotation track of the screw rod 1010, so as to ensure the rotation of the screw rod 1010, when the screw rod 1010 rotates, the screwing cooperation between the screw rod 1010 and the screw blocks 107 converts the rotary motion into linear motion, the two screw blocks 107 are away from or close to each other, the sliding openings 102 limit the linear motion of the screw blocks 107 and avoid deviation, and the complete force and motion transmission path is constructed through the sequential connection of the power assembly 100, the transmission assembly 200, the communication assemblies 300, the pipe body internal constraint assemblies 400 and the bridge bowl end constraint assemblies 500, so as to lay a structural foundation for subsequent welding of the rear bridge of the tricycle.

[0035] The power assembly 100 further comprises a motor 105 fixed on the middle region of the lower wall of the assembly seat 101, a shaft body penetrating through the assembly seat 101 is fixed on the power end of the motor 105, an engagement umbrella disc one 106 is fixed on the upper end of the shaft body, an engagement umbrella disc two 108 is fixed on one side of the two screw rods 1010 close to each other, and a power strip 109 is fixed on one side of the two screw blocks 107 away from each other, the motor 105 serves as a power source, transmits power to the engagement umbrella disc one 106 through the shaft body, makes the engagement umbrella disc one 106 rotate synchronously, drags the engagement umbrella disc two 108 to rotate, and then drags the screw rod 1010 fixed with the engagement umbrella disc two 108 to rotate, the screw rod 1010 rotates to drag the screw blocks 107 to move linearly along the sliding openings 102, and the screw blocks 107 drag the power strip 109 fixed thereon to move synchronously.

[0036] The second engagement umbrella disc 108 and the first engagement umbrella disc 106 are engaged with each other, the wall surfaces of the second engagement umbrella disc 108 and the first engagement umbrella disc 106 are reserved with engagement tooth surfaces matched with each other, the screw block 107 is slidably connected with the cavity wall of the sliding hole 102, the power strip 109 passes through the side wall of the assembly seat 101, the engagement of the second engagement umbrella disc 108 and the first engagement umbrella disc 106 allows the power to be transmitted from the motor 105 to the screw rod 1010, and the power strip 109 passes through the side wall of the assembly seat 101, so that the power strip 109 can extend to the outside of the assembly seat and be connected with the transmission assembly 200.

[0037] The transmission assembly 200 comprises an assembly strip 201, the upper end of the assembly strip 201 is fixedly connected with the power strip 109, the lower end of the assembly strip 201 is fixedly connected with an assembly ring 202, the assembly ring 202 is fixedly connected with a liquid storage barrel 203, the liquid storage barrel 203 is slidably connected with a displacement circular platform 207, the power end of a pneumatic cylinder 204 passes through the upper wall of the liquid storage barrel 203 and is connected with the displacement circular platform 207, the upper wall of the displacement circular platform 207 is fixedly connected with a double-link rod 206, the circumferential side of the double-link rod 206 is provided with an elastic member 205, the upper end of the elastic member 205 is connected with the upper part of the liquid storage barrel 203, the lower end of the elastic member 205 is fixedly connected with the upper wall of the displacement circular platform 207, the lower wall of the displacement circular platform 207 is fixedly connected with one side of a traction rod 208 in the middle area, the lower side of the traction rod 208 is fixedly connected with a receiving seat 209, the inner side of the receiving seat 209 is fixedly connected with one side of a traction rod 2010, the assembly strip 201 serves as the connection core of the transmission assembly 200, and transmits the linear power of the power assembly 100 to the entire transmission assembly by being fixedly connected with the power strip 109, the assembly ring 202 assembles the liquid storage barrel 203, so that the liquid storage barrel 203 is stable, the pneumatic cylinder 204 serves as a power source and drives or pulls the displacement circular platform 207 to displace along the inner wall of the liquid storage barrel 203, the double-link rod 206 moves synchronously with the displacement circular platform 207, so that the displacement of the displacement circular platform 207 is stable, and the elastic member 205 assists in pulling the displacement circular platform 207 back to the initial position through elastic deformation, when the displacement circular platform 207 moves, fluid medium is compressed, so that the fluid medium is transmitted to the constraint assembly in the 400 pipe body, and the pipe body is locked.

[0038] The internal constraint assembly 400 includes a hollow main column 401 fixedly connected to the side of the traction rod 2010 away from the receiving seat 209. A plurality of circular shells 402 are evenly spaced along the periphery of the hollow main column 401. T-shaped rods 403 are slidably connected to the inner wall of each circular shell 402. A buffer rod 406 is slidably connected to the protruding side of each T-shaped rod 403. An arched abutment piece 407 is fixedly connected to the protruding side of each buffer rod 406. The hollow main column 401, fixedly connected to the traction rod 2010, can move with the transmission assembly 200 and simultaneously provides a mounting carrier for the circular shells 402. The evenly spaced circular shells 402 ensure that the subsequent constraint force is evenly applied to the inner wall of the pipe. The T-shaped rod 403 can slide along the inner wall of the cylindrical shell 402 to achieve the action of protruding outward or retracting inward. During the outward protrusion of the T-shaped rod 403, it pulls the buffer rod 406 to move together. The buffer rod 406 then drives the arched abutment piece 407 to contact the inner wall of the tube. The curved structure of the arched abutment piece 407 can better fit with the inner wall of the tube, which can increase the contact area and prevent excessive local force from damaging the tube. Through the simultaneous application of multiple sets of arched abutment pieces 407, the tube is stably constrained from the inside.

[0039] One protruding side of the T-shaped rod 403 has a pre-reserved sliding cavity. One side of the buffer rod 406 is located in the sliding cavity. A sensing element 404 is installed on the cavity wall of the sliding cavity away from the buffer rod 406. The sensing element 404 can detect the load and force. An elastic element 405 is installed between the sensing element 404 and the buffer rod 406. The buffer rod 406 can slide freely in the sliding cavity. When the arched abutment piece 407 is in contact with the inner wall of the tube and is subjected to opposite loads, the buffer rod 406 will move into the sliding cavity. The elastic element 405 is located within the sliding cavity. During displacement, elastic deformation occurs, which absorbs part of the impact force and prevents the load from being too large during the contact period, thus avoiding damage to the tube or the arched contact plate 407. On the other hand, it keeps the arched contact plate 407 in contact with the inner wall of the tube, enhancing the constraint stability. The sensing element 404 detects the load on the buffer rod 406 in real time, reflecting the magnitude of the contact force between the arched contact plate 407 and the inner wall of the tube. Based on the feedback data from the sensing element 404, the operator can adjust the protrusion length of the T-shaped rod 403 to ensure that the contact force is within a suitable range, which satisfies the constraint requirements without damaging the workpiece.

[0040] The bridge bowl end part constraint assembly 500 comprises a connecting strip 501 connected with the lower edge of the assembly strip 201, the lower end of the connecting strip 501 is fixedly connected with an outer hollow rod 502, one side of the outer hollow rod 502 is slidably connected with an inner sliding rod 503, the outer hollow rod 502 is screwed with a compression bolt for constraining the sliding rod 503, the other side of the inner sliding rod 503 is fixedly connected with a blocking ring 504, the blocking ring 504 is provided with a sliding ring 505 slidably connected with the inner sliding rod 503 away from the main body hollow column 401, the side of the sliding ring 505 away from the blocking ring 504 is hingedly connected with a plurality of transmission strips 509 at equal intervals, the end of the inner sliding rod 503 is fixedly connected with a plurality of supporting strips 507 arranged at equal intervals, the inner side of the supporting strip 507 is slidably connected with a sliding T-shaped table 5013, the side of the sliding T-shaped table 5013 away from the inner sliding rod 503 is fixedly connected with a linkage strip 5012, the side of the linkage strip 5012 away from the sliding T-shaped table 5013 is slidably connected with a buffer rod two 5010, the other side of the transmission strip 509 is hingedly connected with the sliding T-shaped table 5013, the side of the sliding ring 505 close to the main body hollow column 401 is fixedly connected with one side of an elastic member four 506, the other side of the elastic member four 506 is fixedly connected with the main body hollow column 401, the inner wall of the main body hollow column 401 is slidably connected with a blocking circular sheet 5014 slidably arranged on the inner sliding rod 503, a plurality of fixed rods 5015 are fixedly connected between the blocking circular sheet 5014 and the sliding ring 505, the connecting strip 501 fixedly connects the bridge bowl end part constraint assembly 500 and the assembly strip 201 of the transmission assembly 200, so that the movement of the assembly strip 201 can drive the bridge bowl end part constraint assembly 500 to move, the inner sliding rod 503 can slide along the inner wall of the outer hollow rod 502, so as to change the overall protruding length of the bridge bowl end part constraint assembly, so as to adapt to the constraint requirements of bridge bowls of different specifications, the blocking ring 504 limits the sliding range of the sliding ring 505 on the inner sliding rod 503, the elastic member four 506 drives the sliding ring 505 to move back to the main body hollow column 401 through its own elastic force, the sliding ring 505 drives the sliding T-shaped table 5013 to protrude outward along the sliding path of the supporting strip 507 through the hinged transmission strip 509 during displacement, the sliding T-shaped table 5013 drives the linkage strip 5012 to move together, the linkage strip 5012 further drives the buffer rod two 5010 to be in close contact with the end part of the bridge bowl, so as to achieve the constraint of the end part of the bridge bowl, the blocking circular sheet 5014 drives the fixed rod 5015 to slide the sliding ring 505 by bearing the load applied by the fluid medium, when different bridge bowls are adapted, the inner sliding rod 503 is slid in the outer hollow rod 502 by loosening the compression bolt, so as to change the length of the inner sliding rod 503 protruding from the inner end of the main body hollow column 401, when the protruding length is longer, the blocking ring 504 drives the sliding ring 505 to move, when the protruding length is shorter, the elastic member four 506 drives the sliding ring 505 to move together with the blocking ring 504, so that the sliding ring 505 is in close contact with the blocking ring 504, so as to change the orientation of the arched abutting piece two 508, so as to adapt to bridge bowls of different specifications, and during the adjustment, the fluid medium flows correspondingly.

[0041] The linkage strip 5012 is provided with a sliding cavity II, one side of the buffer rod II 5010 is located in the sliding cavity II, and the elastic element V 5011 is fixedly connected between the buffer rod II 5010 and the cavity wall of the sliding cavity II. The supporting strip 507 is provided with a T-shaped cavity matched with the sliding T-shaped table 5013. The sliding T-shaped table 5013 is connected with the supporting strip 507 through the concave cavity. The buffer rod II 5010 can freely slide in the sliding cavity II. When the buffer rod II 5010 is attached to the inner wall of the end part of the bridge bowl and is subjected to an opposite load, it can be displaced towards the inside of the sliding cavity II, preventing rigid collision damage to the bridge bowl or the buffer rod II 5010. The elastic element V 5011 can cooperate to change the displacement of the buffer rod II 5010 to be more flexible and adapt to more specifications. The T-shaped cavity of the supporting strip 507 and the structure of the sliding T-shaped table 5013 are adapted to ensure smooth sliding.

[0042] The communication assembly 300 comprises a coupling channel I 301, one side of the coupling channel I 301 is connected with the liquid storage barrel 203, the other side of the coupling channel I 301 is slidably connected with an inner channel 3011, the inner channel 3011 is fixedly connected with the main body hollow column 401, one side of the inner channel 3011 is connected with one side of the communication channel 302, the lower wall of the main body hollow column 401 is fixedly connected with one side of the connecting channel II 303, the other side of the connecting channel II 303 is slidably connected with the displacement rod 304, the side away from the connecting channel II 303 of the displacement rod 304 is fixedly connected with the pressing piece 306, the connecting channel II 303 and the pressing piece 306 are fixedly connected with the elastic element II 305. The coupling channel I 301 realizes the fluid communication between the liquid storage barrel 203 and the main body hollow column 401. When the displacement circular table 207 in the liquid storage barrel 203 slides, the fluid content in the liquid storage barrel 203 changes. The fluid is transmitted to the inside of the main body hollow column 401 through the coupling channel I 301, which assists in driving the T-shaped rod 403 to protrude. The communication channel 302 can be used as a fluid flow channel to send the fluid into the connecting channel II 303 to drive the displacement rod 304 to protrude outward. During the constraint and welding of the pipe body and the bridge bowl, the pipe body is placed on the arched abutting piece I 407, the displacement rod 304 pulls the pressing piece 306 to touch the pipe body, which can press the pipe body, top and press the end part of the bridge bowl to be connected, which is beneficial to the welding action. The elastic element II 305 pulls the displacement rod 304 and the pressing piece 306 back to the initial position through elastic return during the fluid recovery, which is beneficial to the welding to remove the workpiece after completion.

[0043] The inner sliding rod 503 passes through the receiving seat 209, the traction rod two 2010 and is connected with the receiving seat 209 in sliding mode. The inner sliding rod 503 passes through the receiving seat 209 and the traction rod two 2010, so that the bridge bowl end part constraint assembly 500 and the movement path of the pipe body inner constraint assembly 400 are associated with each other but do not interfere with each other, and synchronous action of the two is ensured, the bridge bowl end part and the pipe body are respectively constrained, the collaborative fixing of the welding part of the tricycle is achieved, the sliding connection of the inner sliding rod 503 and the receiving seat 209 allows the inner sliding rod 503 to freely slide in the receiving seat 209, and the extension length of the inner sliding rod 503 can be independently changed to adapt to the constraint requirements of workpieces of different specifications. The surface wall of the arc-shaped abutting piece one 407 and the arc-shaped abutting piece two 508 is uniformly and rotatably connected with a plurality of beads. In this way, the pipe body and the like can be appropriately rotated during welding of the pipe body and the like after being constrained, so that the joint between the pipe body and the bridge bowl can be circumferentially welded. During welding, partial welding can be performed first, so that the pipe body and the bridge bowl are relatively fixed and connected, and then circumferential welding can be performed by rotating, and the beads assist in rotation.

[0044] Specifically, the tool clamp takes the power assembly 100 as a power core and takes the assembly seat 101 as a basic support. The tool clamp can change the orientation by high and low displacement of an additional cylinder. After the motor 105 is powered on, the shaft body traction engages the umbrella disc one 106 to rotate. The engagement between the umbrella disc two 108 and the umbrella disc one 106 drives the screw rod 1010 to rotate. The sliding port 102 constrains the silk joint block 107 to deviate. The silk joint block 107 is displaced by the silk rod 1010. The silk joint block 107 drives the power strip 109 to protrude from the assembly seat 101. Then, the pipe body is inserted on the pipe body inner constraint assembly 400. After that, the motor 105 drives the umbrella disc one 106 to rotate in the opposite direction, so that the power strip 109 is retracted into the assembly seat 101. At this time, the pipe body moves with the pipe body inner constraint assembly 400. When the pipe body is displaced to the appropriate orientation, the action is stopped. Then, the two end parts of the bridge bowl are respectively placed on the bridge bowl end part constraint assembly 500. At this time according to the weight of the pipe body and the bridge bowl, the whole pipe body restraint assembly 400 is pulled down, during which the coupling strip 501, the pulling rod one 208, the inner channel 3011 slide follow changes, under the action of gravity, the pulling rod one 208 is pulled down, the fluid in the lower part of the displacement circular platform 207 is transported to the main hollow column 401 through the coupling channel one 301 and the inner channel 3011, and is then distributed to each circular shell one 402 in the main hollow column 401, then the T-shaped rod 403 is pressed to pull out the buffer rod one 406 and the arched abutting piece one 407 to be in close contact with the inner wall of the pipe body, and the sealing circular piece 5014 is also displaced at this time, the load applied at this time is transmitted to the sensing element 404 through the elastic element three 405, the sensing element 404 can be electrically connected with the industrial computer, and the value of the sensing element 404 is displayed by using the industrial computer, during the period when the displayed value does not reach the requirement, that is, the cylinder 204 is operated to drive the displacement circular platform 207 to slide along the inner wall of the liquid storage barrel 203, and then the fluid is transported into the main hollow column 401, the continuous input makes the buffer rod one 406 closely contact with the inner wall of the pipe body, and when the set value is reached, the operation of the cylinder 204 is stopped, at this time, the pipe body is just clamped stably and moderately, and at the same time, during the period when the cylinder 204 transports the fluid, the fluid drives the sealing circular piece 5014 to displace through the fixed rod 5015, the sliding ring 505, the hinged transmission strip 509, the sliding T-shaped platform, and the linkage strip 5012 are driven to slide, so that the buffer rod two 5010 is in close contact with the end of the bridge bowl, the elastic element five 5011 assists the buffer rod two 5010 to flexibly adapt and keep close contact, and the elastic element four 506 pulls the sliding ring 505 back to the initial position; And the fluid enters the coupling channel two 303 through the communication channel 302, drives the displacement rod 304 to project, and pulls the pressing piece 306 to touch the pipe body, so that the pipe body and the end of the bridge bowl are in close contact and are pressed, thereby providing preliminary positioning for welding, and directly aligning the end of the bridge bowl with the pipe body, which is beneficial to the welding of the pipe body and the bridge bowl.

[0045] It should be understood that, during the development of any actual implementation, numerous implementation decisions can be made. Such development efforts, while complex and time-consuming, would be of a routine nature of design, fabrication and manufacture for those with skill in the art having the benefit of this disclosure, and would not require undue experimentation.

[0046] It should be noted that the above examples are only used to illustrate the technical solutions of the present application but not limit the present application, and although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application, and all of them should be covered in the scope of claims of the present application.

Claims

1. A novel tooling fixture for welding tricycles, comprising a power assembly (100), characterized in that, The power assembly (100) is equipped with a transmission assembly (200), and both sides of the transmission assembly (200) are connected to a connecting assembly (300). Each connecting assembly (300) is connected to a tube body constraint assembly (400), and each tube body constraint assembly (400) is connected to a bridge cup end constraint assembly (500). The power assembly (100) includes a mounting base (101), and a pair of sliding ports (102) are reserved on the mounting base (101). A rotating seat one (103) fixed to the mounting base (101) is installed on the side of the sliding ports (102) that are close to each other, and a rotating seat two (104) fixed to the mounting base (101) is installed on the side of the sliding ports (102) that are far apart from each other. A lead screw (1010) is rotatably connected between the rotating seat two (104) and the rotating seat one (103) that are correspondingly installed. Each lead screw (1010) is threaded with a threaded block (107).

2. The novel tooling fixture for welding tricycles according to claim 1, characterized in that: The power assembly (100) also includes a motor (105) fixedly connected to the central area of ​​the lower wall of the mounting base (101). The power end of the motor (105) is fixedly connected to a shaft passing through the mounting base (101). The upper end of the shaft is fixedly connected to a first engagement umbrella disc (106). The two pairs of lead screws (1010) are fixedly connected to a second engagement umbrella disc (108) on the side that is close to each other. The two pairs of lead screw blocks (107) are fixedly connected to a power bar (109) on the side that is far away from each other.

3. A novel tooling fixture for welding tricycles according to claim 2, characterized in that: The second interlocking umbrella disc (108) and the first interlocking umbrella disc (106) interlock with each other, the threaded block (107) is slidably connected to the cavity wall of the sliding port (102), and the power strip (109) passes through the side wall of the mounting base (101).

4. A novel tooling fixture for welding tricycles according to claim 3, characterized in that: The transmission assembly (200) includes an assembly strip (201), the upper end of which is fixedly connected to a power strip (109). An assembly ring (202) is fixedly connected to the lower end of the assembly strip (201). A liquid storage tank (203) is fixedly connected inside the assembly ring (202). A displacement frustum (207) is slidably connected inside the liquid storage tank (203). The power end of a cylinder (204) passes through the upper wall of the liquid storage tank (203) and is connected to the displacement frustum (207). A double-section rod (2) is fixedly connected to the upper wall of the displacement frustum (207). 06), an elastic element 1 (205) is installed on the periphery of the double-section rod (206). The upper end of the elastic element 1 (205) is connected to the upper part of the liquid storage tank (203). The lower end of the elastic element 1 (205) is fixed to the upper wall of the displacement frustum (207). One side of the traction rod 1 (208) is fixed to the middle area of ​​the lower wall of the displacement frustum (207). The lower side of the traction rod 1 (208) is fixed to the receiving seat (209). One side of the traction rod 2 (2010) is fixed to the inner side of the receiving seat (209).

5. A novel tooling fixture for welding tricycles according to claim 4, characterized in that: The internal constraint assembly (400) of the tube includes a hollow main column (401) fixedly connected to the side of the traction rod (2010) away from the receiving seat (209). A plurality of circular shells (402) are evenly spaced on the peripheral wall of the hollow main column (401). A T-shaped rod (403) is slidably connected to the inner wall of the circular shell (402). A buffer rod (406) is slidably connected to the protruding side of the T-shaped rod (403). An arched abutment piece (407) is fixedly connected to the protruding side of the buffer rod (406).

6. A novel tooling fixture for welding tricycles according to claim 5, characterized in that: The T-shaped rod (403) has a sliding cavity 1 protruding from one side. One side of the buffer rod (406) is located in the sliding cavity 1. A sensing element (404) is installed on the cavity wall of the sliding cavity 1 away from the buffer rod (406). An elastic element 3 (405) is installed between the sensing element (404) and the buffer rod (406).

7. A novel tooling fixture for welding tricycles according to claim 6, characterized in that: The bridge cup end restraint assembly (500) includes a connecting strip (501) that is slidably connected to the lower side of the assembly strip (201). An outer hollow rod (502) is fixedly connected to the lower end of the connecting strip (501). One side of an inner sliding rod (503) is slidably connected to the outer hollow rod (502). A clamping bolt for restraining the sliding rod (503) is threaded onto the outer hollow rod (502). A retaining ring (5) is fixedly connected to the other side of the inner sliding rod (503). 04), the side of the retaining ring (504) away from the main hollow column (401) is provided with a sliding ring (505) slidably connected to the inner sliding rod (503). The side of the sliding ring (505) away from the retaining ring (504) is hinged with one side of several transmission bars (509) at equal intervals. The end of the inner sliding rod (503) is fixedly connected with several support bars (507) arranged at equal intervals. The inside of the support bars (507) is slidably connected with a sliding ring. A T-shaped platform (5013) is fixedly connected to a linkage bar (5012) on the side of the sliding T-shaped platform (5013) away from the inner sliding bar (503). A second buffer bar (5010) is slidably connected to the side of the linkage bar (5012) away from the sliding T-shaped platform (5013). An arched abutment piece (508) is mounted on the second buffer bar (5010). The other side of the transmission bar (509) is hinged to the sliding T-shaped platform (5013). One side of the sliding ring (505) near the main hollow column (401) is fixedly connected to one side of the elastic element four (506), and the other side of the elastic element four (506) is fixedly connected to the main hollow column (401). The inner wall of the main hollow column (401) is slidably connected to a sealing disc (5014) that is slidably installed on the inner sliding rod (503). A number of fixing rods (5015) are fixedly connected between the sealing disc (5014) and the sliding ring (505).

8. A novel tooling fixture for welding tricycles according to claim 7, characterized in that: The linkage bar (5012) has a reserved sliding cavity 2. One side of the buffer rod 2 (5010) is located in the sliding cavity 2. An elastic element 5 (5011) is fixed between the buffer rod 2 (5010) and the cavity wall of the sliding cavity 2. The support bar (507) has a reserved T-shaped cavity that matches the sliding T-shaped platform (5013). The sliding T-shaped platform (5013) is slidably connected to the support bar (507) through the concave cavity.

9. A novel tooling fixture for welding tricycles according to claim 8, characterized in that: The connecting component (300) includes a connecting channel one (301), one side of the connecting channel one (301) is connected to the liquid storage tank (203), and the other side of the connecting channel one (301) is slidably connected to an inner channel (3011). The inner channel (3011) is fixedly connected to the main hollow column (401). One side of the connecting channel (302) is connected to the inner channel (3011). One side of the connecting channel two (303) is fixedly connected to the lower wall of the main hollow column (401). The other side of the connecting channel two (303) is slidably connected to a displacement rod (304). The side of the displacement rod (304) away from the connecting channel two (303) is fixedly connected to a pressure plate (306). An elastic element two (305) is fixedly connected between the connecting channel two (303) and the pressure plate (306).

10. A novel tooling fixture for welding tricycles according to claim 9, characterized in that: The inner sliding rod (503) passes through the support seat (209) and the second traction rod (2010) and is slidably connected to the support seat (209).

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