Anti-deformation fixed bottom bracket for welded part

Abstract

The invention discloses a welding piece anti-deformation fixing bottom bracket which comprises a bottom table plate, a supporting rod frame assembly and an exchange type extension mechanism, a detachable clamping assembly is arranged on the upper section of the supporting rod frame assembly, and the supporting rod frame assembly can be adjusted in a locking hole in the bottom table plate in a rotating or sliding mode. And the clamping assembly is driven by the exchange type extension mechanism to achieve free position adjustment in a three-dimensional space, the exchange type extension mechanism is used for adaptive extension connection between the two supporting rod frame assemblies, and the exchange type extension mechanism assists all-directional flexible adjustment in the clamping direction of the clamping assembly by conducting angle exchange on the supporting rod frame assemblies connected in an extension mode. According to the anti-deformation fixed bottom bracket for the welded part, for a fixed clamping structure of the welded part in the fixed bottom bracket, free position adjustment in a three-dimensional space is achieved, all-directional flexible adjustment in the clamping direction is achieved, and the anti-deformation fixed bottom bracket can adapt to different structural forms of all parts in the welded part and different butt joint requirements of all the parts.

Description

Technical Field

[0001] The invention relates to the technical field related to a bottom bracket of a welded part, and in particular to a bottom bracket for fixing a welded part to prevent deformation. Background Art

[0002] Welding is a manufacturing process and technology that joins metals or other thermoplastic materials by heating or pressurizing. Welded parts refer to the combined assembly units formed by bonding two or more parts together by welding using tools such as welding guns to melt welding rods. They are widely used in metal processing and machinery manufacturing industries. For welded parts such as regular storage racks and special-shaped sheet metal parts, when performing welding operations between components, it is necessary to first assemble the components through brackets, maintain the assembly state of the components through positioning and fixing, and finally perform welding using welding tools.

[0003] After searching for the invention patent with patent number CN114523251B, a sheet metal welding fixture is disclosed, including at least three fixing devices, which are arranged on an iron welding workbench. The fixing devices include a magnetic seat and a slot-shaped bracket fixedly arranged above the magnetic seat. A lower pressure rod is arranged on the top of the inner side of the slot-shaped bracket, and a support rod is arranged on the bottom. The lower end of the lower pressure rod is hinged with an upper pressure plate through a ball joint, and the upper end of the support rod is hinged with a support plate through a ball joint. The upper pressure plate and the support plate are clamped on the edge of the sheet metal by moving the lower pressure rod downward. The present invention can adapt to sheet metal parts with various bending angles by setting an upper pressure plate and a support plate hinged with a ball joint. By setting a magnetic seat, the position movement of the fixing device is facilitated, and it can adapt to sheet metal parts of various shapes.

[0004] The welded parts used to fix the bottom bracket in the above patents and prior art still have certain disadvantages, such as: 1. The existing welded parts fixing bottom bracket is usually composed of a tooling platform and a plurality of welding fixtures. To meet the assembly requirements of the components in the welded parts, the welding fixtures are adjusted to the corresponding positions on the tooling platform, and the components in the welded parts are assembled, positioned and fixed by the welding fixtures in a clamping manner. However, the existing welding fixtures can only be adjusted in a horizontal two-dimensional plane on the tooling platform, and cannot be freely adjusted in a three-dimensional space, that is, they cannot adapt to the assembly and positioning of welded parts with different structural forms, which reduces the scope of application; 2. In the above patent, an upper pressing plate is arranged at the lower end of the lower pressing rod, and a supporting plate is arranged at the upper end of the supporting rod. By moving the lower pressing rod downward, the upper pressing plate and the supporting plate are butted together to clamp and fix the welded parts. However, the upper pressing plate and the supporting plate can only clamp in the vertical direction, which is similar to the functions of the existing welding fixtures. They are too single and cannot be adjusted flexibly in all directions in the clamping direction. They cannot meet the multi-directional clamping requirements of different structural forms, which affects the stability of the assembly and positioning of each component in the welded parts, and is prone to displacement during the welding process, resulting in deformation of the welded parts. Therefore, we propose a welded anti-deformation fixed bottom bracket to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a welded anti-deformation fixed bottom bracket to solve the problem that the fixing mechanism in the bracket proposed in the above background technology cannot realize free adjustment of the position in three-dimensional space and cannot perform all-round flexible adjustment in the clamping direction, thereby reducing the scope of application.

[0006] To achieve the above object, the present invention provides the following technical solution: a welded anti-deformation fixed bottom bracket, comprising: A bottom plate, wherein a locking hole in a through state is provided on the plate body of the bottom plate; Also includes: A rod support frame assembly, wherein a detachable clamping assembly is arranged on the upper section of the rod support frame assembly, and the rod support frame assembly can be rotated or slidably adjusted in the locking hole in the bottom plate, and the clamping assembly is driven by the rod support frame assembly to realize free position adjustment in three-dimensional space, and the rod support frame assembly is fixed to the locking hole in the bottom plate by an expansion pressing method; The interchangeable extension mechanism is arranged at the top of the upper end of the support rod frame assembly, which is used for adaptive extension connection between two support rod frame assemblies, and it assists in all-round flexible adjustment of the clamping direction of the clamping assembly by exchanging the angle of the extended support rod frame assembly.

[0007] Preferably, the support rod frame assembly includes a rod shell, a pressure strip frame and a round rod, the rod shell is connected to the locking hole in the bottom plate in a movable and interlaced manner, the pressure strip frames are telescopically and slidably connected to the four side shell walls of the front, back, left and right of the rod shell, and the transverse frame body in the pressure strip frame is connected to the locking hole in the bottom plate in an expansion and pressing manner together with the rubber pad, the round rod is slidably connected in the middle shell cavity of the rod shell, and the round rod is fixedly connected to a pushing ring from top to bottom by bolts at equal intervals; Among them, the horizontal frame body in the pressure strip frame is fixedly connected with a pin member at equal intervals from top to bottom by bolts, and the pin member forms a sliding structure on the shell cavity wall of the rod shell, and a first spring is installed at the connection between the pin member and the rod shell.

[0008] Preferably, a linking piece is slidably connected in the housing cavity at the upper end of the rod housing, and a second spring is installed at the connection between the linking piece and the rod housing, and the block part in the linking piece is fixedly connected to the upper end of the round rod by bolts; Wherein, a spiral groove is provided on the lumen wall of the tube body portion of the linkage.

[0009] Preferably, the end of the pin member facing the pushing ring is arranged in a hemispherical structure, and the upper end of the pushing ring is arranged in a conical structure, and the inclined outer wall of the conical end in the pushing ring is connected to the hemispherical end of the pin member by a pressing manner.

[0010] Preferably, the clamping assembly includes a main jaw and a secondary jaw, the end of the transverse jaw body in the main jaw is fixedly connected to the upper section of the rod shell by a locking bolt, and a threaded rod is rotatably connected in the groove cavity of the transverse jaw body in the main jaw through a bearing, and a secondary jaw is slidably connected in the groove cavity of the transverse jaw body in the main jaw, and a "convex" connecting seat in the secondary jaw is threadedly connected to the threaded rod, and the secondary jaw and the longitudinal jaw in the main jaw are connected by clamping and pressing with the aid of rubber pads to assist the welded parts.

[0011] Preferably, the exchangeable extension mechanism comprises a housing seat, a drive tube and a ring frame, the housing seat is fixedly connected to the upper end of the rod housing by bolts, the drive tube is connected to the upper housing cavity of the housing seat by bearing-assisted rotation, and the drive tube is provided with active bevel gears and worm gears of an integrated structure in sequence from top to bottom, and a second spline groove is provided on the upper tube cavity wall of the drive tube; The right side of the active bevel gear is meshed with the driven bevel gear, and the driven bevel gear is assisted by a bearing to form a rotating structure on the right cavity wall of the upper shell cavity of the shell seat, and the right end of the shaft column of the driven bevel gear is fixedly connected with a ring frame by bolts, and the ring frame is connected to the rod shell in a movable and interlaced manner; The left side of the worm wheel is meshedly connected with a worm, and the worm is assisted by a bearing to form a rotating structure on the upper shell cavity wall of the shell seat.

[0012] Preferably, a first spline groove is provided on the upper cavity wall of the lower cavity of the housing seat, a transmission rod is rotatably connected in the lower cavity of the housing seat through a bearing, and a lower end rod body of the transmission rod is rotatably connected with a tube body in the linkage; The lower end of the transmission rod is threadedly fixed with a pin bolt, and the pin bolt is connected to the spiral groove in a sliding manner. The upper end of the transmission rod is provided with a third spline groove.

[0013] Preferably, the upper cavity wall of the upper shell cavity of the shell seat is slidably connected with a spline rod, and the middle part of the rod body and the lower end of the rod body of the spline rod are respectively provided with a first spline part and a second spline part of an integrated structure; The first spline portion is connected to the second spline groove by snap-fitting, and the first spline portion and the second spline portion constitute a synchronous sliding structure, and the upper and lower ends of the second spline portion are respectively connected to the first spline groove and the third spline groove by snap-fitting.

[0014] Preferably, the upper section of the rod body of the spline rod is provided with a first annular groove and a second annular groove in sequence from top to bottom, a locating pin for locking is provided at the sliding connection between the spline rod and the shell seat, and a third spring is installed at the connection between the locating pin and the shell seat; Wherein, the positioning pin forms a telescopic sliding structure on the upper shell cavity wall of the shell seat, and the nail head part of the positioning pin is arranged in a hemispherical structure; Wherein, the first annular groove and the second annular groove are both connected to the hemispherical nail head end of the positioning pin in a snap-fit ​​manner, and the first annular groove and the second annular groove are both slidably connected to the hemispherical nail head end of the positioning pin.

[0015] Compared with the prior art, the invention has the following beneficial effects: the anti-deformation fixed bottom bracket of the welded part can realize free position adjustment in three-dimensional space for the welded part fixed clamping structure in the fixed bottom bracket, and can realize all-round flexible adjustment in the clamping direction, and can adapt to different structural forms of various components in the welded part and different docking requirements between various components, thereby effectively improving the scope of application; 1. A rod shell and a pressure strip frame are provided, and the clamping assembly is arranged on the upper section of the supporting rod frame assembly. After the supporting rod frame assembly is arranged, it is docked with the locking hole in the bottom plate, so that the rod shell is in an active state and penetrates through the locking hole in the bottom plate, even if the supporting rod frame assembly can rotate or slide in the locking hole in the bottom plate, and the interchangeable extension mechanism is arranged at the upper end of the supporting rod frame assembly for extending the supporting rod frame assembly. After the extended supporting rod frame assembly is arranged, it is docked with the ring sleeve frame, so that the rod shell is in an active state and penetrates through the ring sleeve frame, even if the extended supporting rod frame assembly can rotate or slide in the ring sleeve frame, which is different from the existing welding fixture that can only adjust the position on the horizontal two-dimensional plane on the tooling platform. According to the structural form of each component in the welded part and the docking requirements between the components, the position of the clamping assembly in the three-dimensional space can be freely adjusted, thereby effectively improving the application range of the fixed bottom bracket; Furthermore, four batten frames are arranged in a circular array with the center of the rod shell as the center of the circle, and the length of the batten frames is adapted to the length of the rod shell. After the rod shell is slidably adjusted in position, the round rod drives multiple pushing rings to slide synchronously, and each pushing ring on the round rod is respectively arranged in a one-to-one correspondence with each pin column member on the batten frame. The inclined outer wall of the conical end of the pushing ring and the hemispherical end of the pin column member are used to slide the batten frame. The pin column member drives the batten frame to slide out, and the fixed operation after adjustment is performed by an expansion pressing method, which is different from the existing fixed-point fixation, realizes the fixed locking of the free point, and ensures the flexibility of adjustment and the convenience of operation. 2. A ring sleeve frame and a spline rod are provided. After the extended and connected support rod frame assembly is docked with the ring sleeve frame, the rod shell is fixed in the ring sleeve frame with the assistance of the pressure strip frame. The active bevel gear and the worm gear form a synchronous rotation structure. Through the meshing action between the worm and the worm gear, and through the meshing action between the active bevel gear and the driven bevel gear, the driven bevel gear drives the ring sleeve frame to rotate. For the clamping assembly in the support rod frame assembly, it can realize all-round and flexible adjustment in the clamping direction according to the structural form of each component in the welded part and the docking requirements between each component, ensure the stability of the assembly and positioning of each component in the welded part, and play an anti-deformation role. In addition, the self-locking characteristics between the worm and the worm gear are used to realize automatic locking of the ring sleeve frame after the angle is adjusted; The locking mechanism of the driving ring frame and the splined rod is locked, and the locking mechanism of the driving ring frame is unlocked, so that the driving ring frame, the splined rod and the driving ring frame form a synchronous rotation structure, and the driving ring frame is driven to rotate by the driving ring frame, and the sliding cooperation between the pin and the spiral groove is utilized to make the linkage member drive the round rod to slide, and the telescopic sliding of the pressure strip frame is operated. After the splined rod is pulled, the first splined portion and the second splined groove lose the locking connection, the upper end of the second splined portion is locked and connected with the first spline groove, and the lower end of the second splined portion is locked and connected with the third spline groove, and the transmission rod is locked again, and the synchronous rotation structure between the driving ring frame and the splined rod is unlocked. The locking action between the driven bevel gear and the active bevel gear is utilized to operate the angle rotation of the ring frame. Through the setting of the linkage structure, the same driving structure is shared, and the overall structure is optimized, making it more convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the front view of the three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the extended splicing side view of the three-dimensional structure of the present invention; Figure 3 It is a schematic diagram of the front view of the three-dimensional structure of the support rod frame assembly of the present invention; Figure 4 It is a schematic diagram of a front view cross-sectional three-dimensional structure of the connection between the rod housing and the round rod of the present invention; Figure 5 It is a schematic diagram of a top-view cross-sectional three-dimensional structure of the connection between the batten frame and the pin column member of the present invention; Figure 6 It is a schematic diagram of a front view cross-sectional three-dimensional structure of the connection between the linkage member and the transmission rod of the present invention; Figure 7 It is a schematic diagram of the front cross-sectional three-dimensional structure of the clamping assembly of the present invention; Figure 8 It is a schematic diagram of the front view cross-section of the three-dimensional structure of the interchangeable extension mechanism of the present invention; Fig. 9 It is a schematic diagram of the front cross-sectional three-dimensional structure of the connection between the housing seat and the driving tube of the present invention; Fig.10 It is a schematic diagram of the side cross-sectional three-dimensional structure of the connection between the housing seat and the worm of the present invention; Fig.11 It is a schematic diagram of a front view cross-sectional three-dimensional structure of the connection between the housing seat and the transmission rod of the present invention; Fig.12 This is a schematic diagram of the three-dimensional structure of the drive tube and the spline rod separated from each other in the front view of the present invention; Fig.13 It is a top view cross-sectional three-dimensional structure schematic diagram of the connection between the shell seat and the positioning pin of the present invention.

[0017] In the figure: 1, bottom plate; 2, rod support frame assembly; 3, clamping assembly; 4, interchangeable extension mechanism; 5, rod housing; 6, pressure bar frame; 7, round rod; 8, pushing ring; 9, pin member; 10, first spring; 11, linkage member; 1101, spiral groove; 12, second spring; 13, main clamping jaw; 14, threaded rod; 15, auxiliary clamping jaw; 16, housing seat; 1601, first spline groove; 17, drive pipe; 1 701, active bevel gear; 1702, worm wheel; 1703, second spline groove; 18, driven bevel gear; 19, ring sleeve; 20, worm; 21, transmission rod; 2101, pin bolt; 2102, third spline groove; 22, spline rod; 2201, first spline part; 2202, second spline part; 2203, first annular groove; 2204, second annular groove; 23, positioning pin; 24, third spring. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-13The present invention provides a technical solution: a welded anti-deformation fixed bottom bracket, including a bottom plate 1, a support rod frame assembly 2 and a replaceable extension mechanism 4.

[0020] When the welded anti-deformation fixed bottom bracket is in use, the position of the clamping assembly 3 in the fixed bottom bracket is adjusted accordingly according to the structural form of each component in the welded component and the docking requirements between the components. After the clamping assembly 3 is placed, it is fixed to the upper section of the support rod frame assembly 2 in a vertical state, and the two constitute a synchronous motion structure. After the support rod frame assembly 2 is placed, it is movable in a vertical state and passes through the locking hole in the bottom plate 1. It can be rotated or slidably adjusted in the locking hole in the bottom plate 1. The clamping assembly 3 is driven by it to realize free adjustment of the position in the three-dimensional space, and the interchangeable extension machine The structure 4 is arranged at the top of the upper end of the support rod frame assembly 2, and the two form a whole. It is staggered and arranged in the opposite direction to the clamping assembly 3, and is used for the adaptive extension connection between the two support rod frame assemblies 2. The interchangeable extension mechanism 4 assists in the all-round flexible adjustment of the clamping direction of the clamping assembly 3 by exchanging the angle of the extended support rod frame assembly 2. The fixing method of the support rod frame assembly 2 after adjustment on the base plate 1 is the same as the fixing method of the support rod frame assembly 2 after adjustment on the interchangeable extension mechanism 4, and both of them are fixed by using the expansion and pressing method.

[0021] According to the structural form of the welded parts and the docking positions of the components, the support rod frame assembly 2 is docked with the locking holes in the bottom plate 1 at the corresponding positions. Specifically, according to Figure 3 , Figure 8 , Fig. 9 , Fig.11 , Fig.12 and Fig.13 As shown, the shell seat 16 is divided into two shell chambers, an upper shell chamber and a lower shell chamber, from top to bottom. Since the upper end of the spline rod 22 is fixedly connected with a pull handle by bolts, the spline rod 22 is movably inserted through the tube cavity of the driving tube 17 after being placed, and its upper end extends outward and movably inserts through the upper cavity wall of the upper shell chamber of the shell seat 16, and its lower end movably inserts through the lower cavity wall of the upper shell chamber of the shell seat 16, and is inserted into the lower shell chamber of the shell seat 16, and is arranged in a movable positioning state. By pressing down the pull handle in the spline rod 22, the spline rod 22 slides downward on the upper cavity wall of the upper shell chamber of the shell seat 16, and the spline rod 22 slides downward in the tube cavity of the driving tube 17; Since the first spline portion 2201 of an integrated structure is provided in the middle of the rod body of the spline rod 22, and the second spline groove 1703 is provided in the upper tube cavity wall of the driving tube 17, after the spline rod 22 slides downward, the first spline portion 2201 and the second spline groove 1703 are connected in a snap-fit ​​manner, that is, through the snap-fit ​​action between the first spline portion 2201 and the second spline groove 1703, the spline rod 22 and the driving tube 17 form a synchronous rotation structure; Since the lower end of the spline rod 22 is provided with a second spline portion 2202 of an integrated structure, the first spline portion 2201 and the second spline portion 2202 form a synchronous sliding structure, and since the upper cavity wall of the lower shell cavity of the shell seat 16 is provided with a first spline groove 1601, and the upper end of the transmission rod 21 is provided with a third spline groove 2102, the specification and size of the first spline groove 1601 are the same as the specification and size of the third spline groove 2102, and the two are arranged in a corresponding state up and down, after the spline rod 22 slides downward, the upper end of the second spline portion 2202 loses the engaging connection with the first spline groove 1601, and the locking of the transmission rod 21 is released. After the lower end of the second spline portion 2202 is completely engaged in the third spline groove 2102, the spline rod 22 and the transmission rod 21 form a synchronous rotation structure through the engaging action between the lower end of the second spline portion 2202 and the third spline groove 2102; Since the upper section of the rod body of the spline rod 22 is provided with a first annular groove 2203 and a second annular groove 2204 in sequence from top to bottom, the specification and size of the second annular groove 2204 are the same as the specification and size of the first annular groove 2203, the longitudinal section of the groove cavity of the two is arranged in a semicircular structure, and the spacing dimension between the first annular groove 2203 and the second annular groove 2204 is equal to the maximum sliding distance dimension of the spline rod 22, and since the sliding connection between the spline rod 22 and the shell seat 16 is provided with a positioning pin 23 for locking, the positioning pin 23 is in the shape of a nail. The spline rod 22 is provided with four spline rods 22 in a circular array with the center of the spline rod 22 as the center of the circle, and the nail head part is provided with a hemispherical structure. After the positioning pin 23 is placed, it is movably clamped in the groove cavity of the upper shell cavity wall of the shell seat 16, and is provided in an active positioning state. When the spline rod 22 is pressed and moved downward, the hemispherical nail head end of the positioning pin 23 loses the clamping connection with the second annular groove 2204 through the structural setting of the hemispherical nail head in the positioning pin 23, and the positioning pin 23 is contracted and slid on the upper shell cavity wall of the shell seat 16; Since a third spring 24 is installed at the connection between the positioning pin 23 and the shell seat 16, the third spring 24 is movably inserted into the groove cavity of the upper shell cavity wall of the shell seat 16 after being placed, one end of which is fixedly clamped on the nail tail part of the positioning pin 23, and the other end thereof is pressed against the groove cavity wall of the shell seat 16. When the positioning pin 23 contracts and slides, the third spring 24 is squeezed and elastically deformed. When the spline rod 22 slides down under pressure, the elastic deformation of the third spring 24 is used to reset, so that the positioning pin 23 extends and slides in the upper shell cavity of the shell seat 16, and the hemispherical nail head end of the positioning pin 23 is clamped and connected with the first annular groove 2203, so as to lock the spline rod 22 after sliding down. according to Figure 1 and Figure 3As shown, the plate body of the bottom plate 1 is provided with locking holes in a through state, wherein the locking holes are arranged in a dot matrix state with equal spacing. Since the diameter of the rod shell 5 is smaller than the diameter of the locking holes in the bottom plate 1, the locking holes at corresponding positions are selected according to the structural form of the welded parts and the docking positions of the components therein, and the rod shell 5 is connected to the locking holes in the bottom plate 1 in a movable and interlaced manner. When the rod support frame assembly 2 is in an unlocked state, it is rotated or slid in the locking holes in the bottom plate 1 to adjust the position of the clamping assembly 3. according to Figure 8 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 As shown, both ends of the worm 20 are fixedly connected with a turning handle by bolts. Since both ends of the worm 20 are fixedly clamped with bearings, after installation, the two ends thereof are respectively connected with the bearings to movably penetrate through the front and rear cavity walls of the upper shell cavity of the shell seat 16 and extend outward, and are arranged in a movable positioning state. Since the lower section of the driving tube 17 is provided with a worm wheel 1702 of an integrated structure, the left side of the worm wheel 1702 is meshed and connected with the worm 20. Since the upper and lower ends of the driving tube 17 are fixedly clamped with bearings, after installation, the upper and lower ends thereof are respectively connected with the bearings to be inserted into the upper and lower cavity walls of the upper and middle shell cavity of the shell seat 16, and are arranged in a movable positioning state. By screwing the turning handle in the worm 20, the worm 20 is assisted by the bearing to rotate in the upper shell cavity wall of the shell seat 16, and the meshing action between the worm 20 and the worm wheel 1702 makes the driving tube 17 rotate in the upper shell cavity of the shell seat 16 with the assistance of the bearing. Since the first annular groove 2203 and the second annular groove 2204 are both slidably connected to the hemispherical nail head end of the positioning pin 23, the driving tube 17 drives the spline rod 22 to rotate synchronously when rotating, and the first annular groove 2203, the second annular groove 2204 and the positioning pin 23 are slidably connected to each other, so that the rotation of the spline rod 22 is not affected; Since the center of the driving tube 17 and the center of the transmission rod 21 are on the same vertical central axis, and since the upper end of the transmission rod 21 is arranged in an "I"-shaped structure, the upper and lower ends of the "I"-shaped section are fixedly connected with bearings, and after it is placed, the "I"-shaped section is movably clamped in the lower shell cavity of the shell seat 16 with the bearing, and the lower end rod body movably penetrates through the lower shell cavity wall of the shell seat 16, and is movably inserted in the tube cavity of the linkage 11, and is arranged in a movable positioning state. After the spline rod 22 slides down, it forms a synchronous rotation structure with the driving tube 17 and also forms a synchronous rotation structure with the transmission rod 21. When the driving tube 17 is driven to rotate, it drives the transmission rod 21 to move synchronously, so that the transmission rod 21 rotates in the lower shell cavity of the shell seat 16 with the assistance of the bearing; according to Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 8 As shown, the housing seat 16 is clamped and connected to the upper end of the rod housing 5 by bolts after being placed, and is arranged in an integrated structure. The linkage 11 is composed of a tube body and a block body, wherein the center of the tube body and the center of the block body are on the same vertical central axis. Since a spiral groove 1101 is provided on the lumen wall of the tube body in the linkage 11, the spiral angle of the spiral groove 1101 is 180 degrees, and it is symmetrically arranged about the vertical central axis of the linkage 11, and the spiral angles of the two spiral grooves 1101 are arranged in opposite directions, and since the transmission rod The lower end of the rod body 21 is threadedly fixed with a pin bolt 2101 in a vertical state. The pin bolt 2101 is symmetrically arranged about the vertical center axis of the transmission rod 21. The two pin bolts 2101 correspond to the two spiral grooves 1101 respectively. After being arranged, they are movably inserted in the spiral grooves 1101. The two are connected in a sliding manner. After the transmission rod 21 is driven to rotate, the lower end of the transmission rod 21 rotates in the tube body part of the linkage 11. Through the sliding cooperation between the pin bolt 2101 and the spiral groove 1101, the linkage 11 is driven to move. Since a square slide groove is provided downwardly in the upper shell cavity of the rod shell 5, the spiral height dimension of the linkage 11 is equal to the maximum sliding distance dimension of the linkage 11. After being installed, it is movably clamped in the upper shell cavity of the rod shell 5, and the block part thereof is movably inserted in the square slide groove in the rod shell 5, and is positioned in an active state. In addition, since a spring bin is provided on the wall of the tube cavity of the tube body part in the linkage 11, a second spring 12 is installed at the connection between the linkage 11 and the rod shell 5. After being installed, the second spring 12 is movably inserted in the spring bin in the linkage 11, one end of which presses against the wall of the spring bin in the linkage 11, and the other end presses against the lower shell wall of the shell seat 16. After being driven, the linkage 11 slides upward in the upper shell cavity of the rod shell 5, and the second spring 12 is squeezed to undergo elastic deformation. After the linkage 11 is installed, the block part thereof is sleeved and fixedly connected to the upper end of the round rod 7 by bolts, and since the round rod 7 is movably inserted into the middle shell cavity of the rod shell 5 after being installed, after the linkage 11 slides upward, the round rod 7 slides upward in the middle shell cavity of the rod shell 5; Since the round rod 7 is provided with pushing rings 8 at equal intervals from top to bottom, the pushing rings 8 are sleeved and fixedly connected to the round rod 7 by bolts after being installed, and the pushing rings 8 and the round rod 7 form a synchronous sliding structure, and the upper end of the pushing ring 8 is provided with a conical structure. Since the pressure strip frame 6 is provided with pins 9 at equal intervals from top to bottom, the pins 9 are arranged in a circular array with the center of the pushing ring 8 as the center of the circle, and the end thereof facing the pushing ring 8 is provided with a hemispherical structure, each pin 9 on the pressure strip frame 6 is respectively provided in one-to-one correspondence with each pushing ring 8 on the round rod 7, and the pins 9 are provided in a vertical state on the pressure strip frame 6 after being installed, and the inner end thereof is movably inserted through the shell cavity wall of the rod shell 5 and inserted into the middle shell cavity, and the pins 9 are provided towards the pressure strip frame 6. The outer end is movably inserted through the housing cavity wall of the rod shell 5 and inserted into the "concave" shaped groove. Since the two side walls of the spring compartment in the pin column member 9 are provided with through-going sliding grooves, a limit rod is arranged at the connection between the pin column member 9 and the rod shell 5. After the limit rod is installed, it is movably inserted through the sliding groove and the spring compartment in turn, and the two ends of the limit rod are respectively fixedly connected to the two sides of the housing cavity wall of the rod shell 5, so that the pin column member 9 is positioned on the rod shell 5 in a movable state. The inclined outer wall of the conical end of the pushing ring 8 is connected with the hemispherical end of the pin column member 9 in a pressing manner. After the round rod 7 drives the pushing ring 8 to slide upward, the pushing ring 8 pushes the pin column member 9, so that the pin column member 9 extends out and slides on the housing cavity wall of the rod shell 5. Since the middle part of the pin member 9 is provided with an open spring compartment, a first spring 10 is installed at the connection between the pin member 9 and the rod housing 5. After being installed, the first spring 10 is movably inserted into the spring compartment in the pin member 9, one end of which is pressed against the spring compartment wall in the pin member 9, and the other end of which is pressed against the limit rod in the pin member 9. After the pin member 9 is extended and slid, the first spring 10 is squeezed and elastically deformed. Since the pin column member 9 is fixedly connected to the horizontal frame body in the pressure strip frame 6 by bolts, the two constitute a synchronous sliding structure. Since the front, back, left, and right sides of the rod shell 5 are all provided with a "concave" shaped groove that is open outward, the pressure strip frames 6 are arranged on the shell walls of the front, back, left, and right sides, and are arranged in a circular array with the center of the rod shell 5 as the center of the circle. The cross section of the pressure strip frame 6 is arranged in a "U" shaped structure, wherein the horizontal frame body is arranged in an arc structure, and the arc is adapted to the arc of the hole wall of the locking hole in the bottom plate 1. After the pressure strip frame 6 is placed, two longitudinal frames are respectively movably inserted into the groove cavities on both sides of the "concave" shaped groove in the rod shell 5. With the assistance of the pin column member 9, the pressure strip frame 6 is positioned on the rod shell 5 in an active state. After the pin column member 9 slides out, the pressure strip frame 6 slides out on the shell wall of the rod shell 5, wherein the horizontal frame body extends out of the "concave" shaped groove in the rod shell 5. Since the transverse frame body of the pressure strip frame 6 is clamped and glued to the outside with a rubber pad, and anti-slip grooves are arranged at equal intervals on the rubber pad, the friction between the pressure strip frame 6 and the locking hole in the base plate 1 is increased. After the pressure strip frame 6 slides out, the transverse frame body together with the rubber pad is expanded and pressed into connection with the locking hole in the base plate 1, and the adjusted rod shell 5 is fixed in the locking hole in the base plate 1, thereby completing the fixation of the support rod frame assembly 2 and the locking hole in the base plate 1 after docking.

[0022] According to the structural form of the welded parts and the docking positions of the components therein, the two support rod frame assemblies 2 are extended and connected through the interchangeable extension mechanism 4. According to the above, the diameter of the annular cavity of the ring sleeve frame 19 is equal to the diameter of the locking hole in the base plate 1. The fixing method between the support rod frame assembly 2 and the base plate 1 is equivalent to the fixing method between the ring sleeve frame 19 and the support rod frame assembly 2. The rod shell 5 is connected to the ring sleeve frame 19 in a movable and interlaced manner. When the support rod frame assembly 2 is not locked, the rod shell 5 can rotate or slide in the ring sleeve frame 19 to adjust the position of the clamping assembly 3. After the rod shell 5 is adjusted in the ring sleeve frame 19, the transverse frame body of the pressure strip frame 6 together with the rubber pad is connected to the ring sleeve frame 19 by expansion and pressing, and the rod shell 5 is fixed in the ring sleeve frame 19, that is, the fixation of the support rod frame assembly 2 and the ring sleeve frame 19 after docking is completed.

[0023] According to the structural form of the welded parts and the docking positions of the components, the angle of the extended support rod frame assembly 2 is changed by the exchangeable extension mechanism 4. Specifically, according to the above, according to Figure 2 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 and Fig.13 As shown, by pulling up the pull handle in the spline rod 22, the hemispherical nail head end of the positioning pin 23 loses the engagement connection with the first annular groove 2203, and the elastic deformation of the third spring 24 is used to reset the hemispherical nail head end of the positioning pin 23 to re-engage with the second annular groove 2204, thereby locking the spline rod 22 that slides upward; Since the spacing between the second spline groove 1703 and the upper tube cavity opening of the driving tube 17 is greater than the length of the first spline portion 2201, the spline rod 22 slides upward in the tube cavity of the driving tube 17, so that the first spline portion 2201 loses the engagement connection with the second spline groove 1703 and is placed in the gap between the second spline groove 1703 and the upper tube cavity opening of the driving tube 17, thereby releasing the synchronous rotation between the spline rod 22 and the driving tube 17, that is, releasing the synchronous rotation between the driving tube 17 and the transmission rod 21; Since the depth dimension of the third spline groove 2102 is greater than the maximum sliding distance dimension of the second spline portion 2202, when the spline rod 22 slides upward, the upper end of the second spline portion 2202 is engaged in the first spline groove 1601, and the lower end of the second spline portion 2202 is still engaged and connected with the third spline groove 2102. Through the engagement between the second spline portion 2202, the first spline groove 1601 and the third spline groove 2102, the rotating transmission rod 21 is locked, and the layering frame 6 in the support rod frame assembly 2 is kept in an extended fixed state; Since the upper section of the driving tube 17 is provided with an integrated active bevel gear 1701, and since the right side of the active bevel gear 1701 is meshed and connected with the driven bevel gear 18, the active bevel gear 1701 and the worm wheel 1702 are arranged in a co-centric state, and the two and the driving tube 17 constitute a synchronous rotation structure, and the worm 20 is rotated by the worm 20 through the bearing to assist the worm 20 to rotate on the upper shell cavity wall of the shell seat 16, and the meshing action between the worm 20 and the worm wheel 1702 makes the driving tube 17 rotate in the upper shell cavity of the shell seat 16 through the bearing, and the meshing action between the active bevel gear 1701 and the driven bevel gear 18 drives the driven bevel gear 18 to rotate; Since an integrated shaft column is provided at the center position of the driven bevel gear 18, and a bearing is fixedly clamped on the shaft column, after the driven bevel gear 18 is installed, the shaft column and the bearing are movably inserted into the right cavity wall of the upper shell cavity of the shell seat 16, and the shaft column movably penetrates through the right cavity wall of the upper shell cavity and extends outward, and is arranged in a movable positioning state. Since the right end of the shaft column in the driven bevel gear 18 is fixedly connected to the ring sleeve frame 19 by bolts, after the driven bevel gear 18 is driven, it is assisted by the bearing to rotate on the right cavity wall of the upper shell cavity of the shell seat 16, and drives the ring sleeve frame 19 to rotate synchronously, so as to adjust the angle of the extended support rod frame assembly 2, and after the adjustment, the self-locking characteristics between the worm 20 and the worm wheel 1702 are used to complete the fixation of the adjusted ring sleeve frame 19.

[0024] When the welding parts are clamped by the clamping assembly 3, specifically, according to Figure 1 , Figure 2 and Figure 7 As shown, the upper section of the rod support frame assembly 2 is provided with a detachable clamping assembly 3. Since the main clamping jaw 13 is arranged in an "L"-shaped structure, the end of the transverse claw body is sleeved on the upper section of the rod shell 5 after being arranged. Since the connection between the main clamping jaw 13 and the rod shell 5 is provided with a locking bolt, wherein the locking bolt is symmetrically arranged about the horizontal central axis of the main clamping jaw 13, and wherein the locking bolt is inserted through the end groove wall of the transverse claw body in the main clamping jaw 13, and is threadedly fixed to the shell wall of the upper section of the rod shell 5, the end of the transverse claw body in the main clamping jaw 13 is fixedly connected to the upper section of the rod shell 5 through the locking bolt, so that the main clamping jaw 13 is in a vertical state on the rod shell 5; Since a convex groove is provided in the transverse jaw body of the main jaw 13, wherein the narrow part of the convex groove is set in an open state, and since an integrated convex connecting seat is provided at the lower end of the auxiliary jaw 15, the convex connecting seat is movably clamped in the groove cavity of the transverse jaw body of the main jaw 13 after being placed, so that the auxiliary jaw 15 is positioned on the main jaw 13 in an active state; Since the outward end of the threaded rod 14 is fixedly connected with a turning handle by bolts, the inward and outward ends thereof are fixedly clamped with bearings, and after being placed, the two ends thereof are respectively movably inserted into the groove walls of the transverse claw body in the main clamping jaw 13 with the bearings, and since the "convex" connecting seat in the auxiliary clamping jaw 15 is movably inserted and connected with the threaded rod 14, the two are connected together through the thread, and by screwing the turning handle in the threaded rod 14, the threaded rod 14 is assisted by the bearings to rotate in the groove cavity of the transverse claw body in the main clamping jaw 13 , through the threaded connection between the threaded rod 14 and the auxiliary clamping jaw 15, the auxiliary clamping jaw 15 slides in the groove cavity of the transverse jaw body in the main clamping jaw 13, and the longitudinal jaw body in the main clamping jaw 13 is clamped and glued with a rubber pad. After the auxiliary clamping jaw 15 is placed, it is arranged in a parallel state corresponding to the longitudinal jaw body in the main clamping jaw 13, and a rubber pad is also clamped and glued on it. After the auxiliary clamping jaw 15 slides, it and the longitudinal jaw body in the main clamping jaw 13 are fixed by clamping and pressing with the rubber pad to assist the welding part; This is the entire working process of the welded anti-deformation fixing bottom bracket. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0025] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A welded anti-deformation fixed bottom bracket, comprising: A bottom plate (1), wherein a locking hole in a through state is provided on the plate body of the bottom plate (1); It is characterized by further comprising: A rod support frame assembly (2), wherein a detachable clamping assembly (3) is arranged on the upper section of the rod support frame assembly (2), and the rod support frame assembly (2) can be rotated or slidably adjusted in a locking hole in the bottom plate (1), and the clamping assembly (3) is driven by the rod support frame assembly (2) to realize free position adjustment in a three-dimensional space, and the rod support frame assembly (2) is fixed to the locking hole in the bottom plate (1) by an expansion pressing method; The interchangeable extension mechanism (4) is arranged at the top of the upper end of the support rod frame assembly (2), and is used for adaptive extension connection between two support rod frame assemblies (2). By exchanging the angle of the extended support rod frame assembly (2), the interchangeable extension mechanism (4) assists in the full-range and flexible adjustment of the clamping direction of the clamping assembly (3).

2. A welded anti-deformation fixed bottom bracket according to claim 1, characterized in that: The support rod frame assembly (2) comprises a rod shell (5), a pressure strip frame (6) and a round rod (7), wherein the rod shell (5) is connected to the locking hole in the bottom plate (1) in a movable interlaced manner, the pressure strip frames (6) are telescopically and slidably connected to the four side shell walls of the rod shell (5) on the front, back, left and right sides, and the transverse frame body of the pressure strip frame (6) is connected to the locking hole in the bottom plate (1) in an expansion and pressing manner, the round rod (7) is slidably connected in the middle shell cavity of the rod shell (5), and the round rod (7) is fixedly connected to a pushing ring (8) from top to bottom by bolts at equal intervals; Wherein, the horizontal frame body in the pressure strip frame (6) is fixedly connected with a pin member (9) at equal intervals from top to bottom by bolts toward the inside, and the pin member (9) forms a sliding structure on the shell cavity wall of the rod shell (5), and a first spring (10) is installed at the connection between the pin member (9) and the rod shell (5).

3. A welded anti-deformation fixed bottom bracket according to claim 2, characterized in that: A linking piece (11) is slidably connected in the housing cavity at the upper end of the rod housing (5), a second spring (12) is installed at the connection between the linking piece (11) and the rod housing (5), and a block portion in the linking piece (11) is fixedly connected to the upper end of the round rod (7) by means of bolts; Wherein, a spiral groove (1101) is provided on the lumen wall of the tube body portion of the linkage member (11).

4. A welded anti-deformation fixed bottom bracket according to claim 2, characterized in that: The end of the pin member (9) facing the pushing ring (8) is arranged in a hemispherical structure, and the upper end of the pushing ring (8) is arranged in a conical structure, and the inclined outer wall of the conical end of the pushing ring (8) is connected to the hemispherical end of the pin member (9) by a pressing manner.

5. The anti-deformation fixed bottom bracket of a welded part according to claim 1, characterized in that: The clamping assembly (3) comprises a main clamping jaw (13) and a secondary clamping jaw (15), the end of the transverse jaw body in the main clamping jaw (13) being fixedly connected to the upper section of the rod housing (5) via a locking bolt, and a threaded rod (14) being rotatably connected in the groove cavity of the transverse jaw body in the main clamping jaw (13) via a bearing, the secondary clamping jaw (15) being slidably connected in the groove cavity of the transverse jaw body in the main clamping jaw (13), and a "convex"-shaped connecting seat in the secondary clamping jaw (15) being threadedly connected to the threaded rod (14), and the secondary clamping jaw (15) and the longitudinal jaw body in the main clamping jaw (13) being connected by a clamping and pressing method via a rubber pad to assist the welding of the parts.

6. The anti-deformation fixed bottom bracket of a welded part according to claim 1, characterized in that: The exchangeable extension mechanism (4) comprises a housing seat (16), a drive tube (17) and a ring frame (19); the housing seat (16) is fixedly connected to the upper end of the rod housing (5) by means of bolts; the drive tube (17) is rotatably connected to the upper housing cavity of the housing seat (16) by means of a bearing, and the drive tube (17) is provided with active bevel teeth (1701) and a worm gear (1702) of an integrated structure in sequence from top to bottom, and a second spline groove (1703) is provided on the upper cavity wall of the drive tube (17); The right side of the active bevel gear (1701) is meshedly connected with the driven bevel gear (18), and the driven bevel gear (18) is assisted by a bearing to form a rotating structure on the right cavity wall of the upper shell cavity of the shell seat (16), and the right end of the shaft column of the driven bevel gear (18) is fixedly connected with a ring frame (19) by bolts, and the ring frame (19) is connected to the rod shell (5) in a movable and interlaced manner; The left side of the worm wheel (1702) is meshedly connected with a worm (20), and the worm (20) forms a rotating structure on the upper shell cavity wall of the shell seat (16) with the assistance of a bearing.

7. A welded anti-deformation fixed bottom bracket according to claim 6, characterized in that: A first spline groove (1601) is formed on the upper cavity wall of the lower cavity of the housing seat (16); a transmission rod (21) is rotatably connected to the lower cavity of the housing seat (16) via a bearing, and a lower end rod body of the transmission rod (21) is rotatably connected to a tube body portion of the linkage member (11); The lower end of the transmission rod (21) is threadedly fixed with a pin bolt (2101), and the pin bolt (2101) is connected to the spiral groove (1101) in a sliding manner. The upper end of the transmission rod (21) is provided with a third spline groove (2102).

8. The anti-deformation fixed bottom bracket of the welded part according to claim 7, characterized in that: The upper cavity wall of the upper shell cavity of the shell seat (16) is slidably connected to a spline rod (22), and the middle part and the lower end of the rod body of the spline rod (22) are respectively provided with a first spline part (2201) and a second spline part (2202) of an integrated structure; The first spline portion (2201) and the second spline groove (1703) are connected by a snap-fitting manner, and the first spline portion (2201) and the second spline portion (2202) form a synchronous sliding structure, and the upper and lower ends of the second spline portion (2202) are respectively connected to the first spline groove (1601) and the third spline groove (2102) by a snap-fitting manner.

9. The anti-deformation fixed bottom bracket of the welded part according to claim 8, characterized in that: The upper section of the rod body of the spline rod (22) is provided with a first annular groove (2203) and a second annular groove (2204) in sequence from top to bottom, a locating pin (23) for locking is provided at the sliding connection between the spline rod (22) and the housing seat (16), and a third spring (24) is installed at the connection between the locating pin (23) and the housing seat (16); The positioning pin (23) forms a telescopic sliding structure on the upper shell cavity wall of the shell seat (16), and the nail head portion of the positioning pin (23) is arranged in a hemispherical structure; The first annular groove (2203) and the second annular groove (2204) are both connected to the hemispherical nail head end of the positioning pin (23) in a snap-fit ​​manner, and the first annular groove (2203) and the second annular groove (2204) are both slidably connected to the hemispherical nail head end of the positioning pin (23).

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