Positioning clamp for assembling frame of double-person vehicle

Abstract

According to the positioning clamp for assembling the frame of the double-person vehicle, a first adjusting rod and a second adjusting rod are arranged above a first guide rod and a second guide rod, and one end of the first adjusting rod and one end of the second adjusting rod are connected with the first guide rod into a whole through a five-way positioning device in a position and angle adjustable mode; two sets of position adjusting locking devices connected with the first adjusting rod and the second adjusting rod respectively are installed on the second guide rod in a sliding mode, the first adjusting rod and the second adjusting rod are each provided with a middle pipe positioning device, and under the combined action of the middle pipe positioning devices and the five-way positioning devices on the first adjusting rod and the second adjusting rod, the middle pipe can be positioned. And the front fork and the rear fork are positioned and fixed on the same plane. Reliable positioning conditions are provided for welding of the connecting fork, the front fork and the rear fork on the same plane, the problems of low manual measurement precision and efficiency and poor welding quality in a traditional welding mode are solved, the cost is low, the requirement for assembling and positioning of frames of two-person vehicles of different models is met, and the use value is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of auxiliary clamps, and in particular relates to a positioning clamp for assembling a frame of a two-seater bicycle. Background Art

[0002] A tandem bicycle is a bicycle that can be ridden by two people at the same time. The frame of a tandem bicycle includes not only a front fork and a rear fork, but also a connecting fork located between the front fork and the rear fork. At present, when assembling the front fork and the connecting fork, it is difficult to ensure that the two are located on the same plane, and manual measurement and positioning are required before welding. The welding is difficult, the welding accuracy is low, and the welding quality consistency is poor. Therefore, in order to improve the assembly efficiency of the front fork and the connecting fork, and improve the assembly accuracy and quality, it is necessary to design a positioning fixture to solve the above problems. Utility Model Content

[0003] The technical problem solved by the utility model is as follows: a positioning fixture for assembling a frame of a two-person bicycle is provided, by arranging two mutually parallel first guide rods and second guide rods on a welding platform, and making one end of a first adjusting rod and a second adjusting rod located above the first guide rod and the second guide rod and provided with a middle tube positioning device be connected to the first guide rod in an angle and position adjustable manner through a five-way positioning device, while the other ends of the first adjusting rod and the second adjusting rod are connected to the second guide rod through a position adjustment locking device, so as to realize fast positioning and fixing of front forks and rear forks of different models, provide reliable positioning conditions for welding the connecting fork with the front fork and the rear fork in the same plane, solve the problems of low manual measurement accuracy and efficiency and poor welding quality existing in traditional welding methods, have a simple structure, a novel design, and a low cost, meet the assembly and positioning requirements of frames of two-person bicycles of different models, and have a high use value.

[0004] The technical solution adopted by the utility model: a positioning fixture for assembling a double-person bicycle frame, comprising a first guide rod and a second guide rod which are arranged parallel to each other and fixed on a welding platform, a first adjusting rod and a second adjusting rod are provided above the first guide rod and the second guide rod, and one end of the first adjusting rod and the second adjusting rod are connected to the first guide rod in a position and angle-adjustable manner through a five-way positioning device, two groups of positioning locking devices which are respectively connected to the first adjusting rod and the second adjusting rod are slidably mounted on the second guide rod, and the first adjusting rod and the second adjusting rod are fixed to the second guide rod through the corresponding positioning locking devices when the distance and angle of the first adjusting rod and the second adjusting rod are adjusted into place, the first adjusting rod and the second adjusting rod are both provided with a middle tube positioning device for positioning the middle tubes on the front fork and the rear fork, and the front fork and the rear fork are positioned and fixed in the same plane under the joint action of the middle tube positioning device and the five-way positioning device on the first adjusting rod and the second adjusting rod.

[0005] Among them, the five-way positioning device includes a positioning plate, a T-bolt and a pressure plate, the upper end surfaces of one end of the first adjusting rod and the second adjusting rod are both provided with positioning plates, the lower ends of the five-way tube in the front fork and the five-way tube in the rear fork are both positioned on the positioning plate, and the pressure plate is concentrically arranged on the upper end surface of the five-way tube, the big head end of the T-bolt is adapted in the guide groove of the first guide rod, and the upper end of the T-bolt passes through the center hole on the positioning plate, the through hole on the five-way tube and the pressure plate, and is adapted to be connected with the locking nut, so as to realize the positioning and fixation of the first adjusting rod and the second adjusting rod as well as the five-way tube on the first guide rod.

[0006] Furthermore, the positioning plate is an inverted T-shaped disc with a lower end diameter greater than an upper end diameter, and the five-way pipe is adapted to the upper end small-diameter disc and abuts against the upper end surface of the large-diameter disc.

[0007] Furthermore, the positioning locking device includes a slider, which is adapted in the guide groove of the second guide rod, and the guide groove surfaces of the first adjusting rod and the second adjusting rod are provided with waist-shaped long holes, and the guide screws passing through the waist-shaped long holes are fixedly connected to one end of the slider, and the other ends of the two sliders are threadedly connected with locking screws whose ends are against the guide groove surface of the second guide rod and are used to fix the first adjusting rod and the second adjusting rod to adjust the angles into position respectively.

[0008] Furthermore, the middle tube positioning device includes an L-shaped seat, a positioning cone is fixed on the outer wall of the vertical plate of the L-shaped seat, and the middle tubes on the front fork and the rear fork are adapted to the positioning cone, T-shaped bolts are adapted to the guide grooves of the first adjusting rod and the second adjusting rod, and the upper end of the T-shaped bolt passes through the through hole on the horizontal plate of the L-shaped seat and is adapted to be connected to the screw sleeve, and an L-shaped handle is fixed on the screw sleeve for facilitating the rotation of the screw sleeve.

[0009] Furthermore, the bottom surface of the horizontal handle of the L-shaped handle is higher than the upper end surface of the vertical plate of the L-shaped seat.

[0010] Furthermore, the first guide rod and the second guide rod as well as the first adjustment rod and the second adjustment rod are all made of aluminum profiles with guide grooves on four side walls.

[0011] The advantages of this utility model compared with the prior art:

[0012] 1. This technical solution realizes the positioning and fixing of the first adjusting rod, the second adjusting rod and the five-way pipe on the first guide rod through the five-way positioning device arranged at one end of the first adjusting rod and the second adjusting rod, so as to provide reliable conditions for the front fork and the rear fork to be supported in the same plane and the connecting fork to be welded in the same plane with the front fork and the rear fork;

[0013] 2. The positioning locking device of the technical solution and the waist-shaped long holes on the first adjusting rod and the second adjusting rod provide conditions for adjusting and fixing the angles of the first adjusting rod and the second adjusting rod, thereby ensuring the position reliability of the first adjusting rod and the second adjusting rod during the welding process;

[0014] 3. The setting of the tube positioning device in the technical solution provides conditions for the concentric positioning support of the five-way tube, and adopts this structure to ensure that the front fork and the rear fork are located on the same plane, thereby ensuring the welding accuracy of the connecting fork between the front fork and the rear fork. The same model of two-person bicycle frames only needs one measurement to be batch positioned and welded, with high positioning accuracy, greatly improving the welding quality and efficiency;

[0015] 4. This technical solution can realize the rapid positioning and fixing of front forks and rear forks of different models, provide reliable positioning conditions for welding the connecting fork with the front fork and rear fork on the same plane, solve the problems of low manual measurement accuracy and efficiency and poor welding quality in traditional welding methods, have simple structure, novel design, low cost, meet the assembly and positioning requirements of two-person bicycle frames of different models, and have high use value. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the use state of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the five-way positioning device of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the middle tube positioning device of the utility model. DETAILED DESCRIPTION

[0020] The following will be combined with the embodiment of the present utility model Figure 1-4 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] It should be noted that, in this document, unless otherwise stated, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc., are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0022] In this document, the terms "comprises", "comprising" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further limitations. The elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method, article or device comprising the elements.

[0023] Positioning fixture for assembling the frame of a two-person bicycle, such as Figure 1-4 As shown, it includes a first guide rod 1 and a second guide rod 2 which are arranged parallel to each other and fixed on a welding platform, a first adjusting rod 3 and a second adjusting rod 4 are arranged above the first guide rod 1 and the second guide rod 2, and one end of the first adjusting rod 3 and the second adjusting rod 4 are connected to the first guide rod 1 in a position and angle-adjustable manner through a five-way positioning device, two groups of adjustment locking devices which are respectively connected to the first adjustment rod 3 and the second adjustment rod 4 are slidably mounted on the second guide rod 2, and when the distance and angle of the first adjustment rod 3 and the second adjustment rod 4 are adjusted to the right position, they are fixed to the second guide rod 2 through the corresponding adjustment locking devices, and the first adjustment rod 3 and the second adjustment rod 4 are both provided with a middle tube positioning device for positioning the middle tube 6 on the front fork 5 and the rear fork, and under the joint action of the middle tube positioning device and the five-way positioning device on the first adjustment rod 3 and the second adjustment rod 4, the front fork 5 and the rear fork are positioned and fixed in the same plane; wherein, the first guide rod 1 and the second guide rod 2 as well as the first adjustment rod 3 and the second adjustment rod 4 are all made of aluminum profiles with guide grooves on the four side walls.

[0024] like Figure 3As shown, the specific structure of the five-way positioning device is as follows: the five-way positioning device includes a positioning plate 7, a T-bolt 8 and a pressure plate 9, the upper end surfaces of one end of the first adjusting rod 3 and the second adjusting rod 4 are both provided with positioning plates 7, the lower ends of the five-way tube 10 in the front fork 5 and the five-way tube 10 in the rear fork are both positioned on the positioning plate 7, and the pressure plate 9 is concentrically arranged on the upper end surface of the five-way tube 10, the big head end of the T-bolt 8 is adapted to the guide groove of the first guide rod 1, providing conditions for adjusting the position and angle between the first adjusting rod 3 and the second adjusting rod 4, and the upper end of the T-bolt 8 passes through the center hole on the positioning plate 7, the through holes on the five-way tube 10 and the pressure plate 9, and is adapted to be connected with the locking nut 11, so as to realize the first adjusting rod 3 and the second adjusting rod 4 and the five-way tube Specifically, the positioning plate 7 is an inverted T-shaped disc with a lower end diameter greater than an upper end diameter, and the five-way tube 10 is adapted to the upper small-diameter disc and abuts against the upper end surface of the large-diameter disc; in the above structure, the positioning plate 7 is arranged to provide conditions for the concentric positioning support of the five-way tube 10, and this structure can ensure that the front fork 5 and the rear fork are located on the same plane, thereby ensuring the welding accuracy of the connecting fork between the front fork 5 and the rear fork; the five-way positioning device arranged at one end of the first adjusting rod 3 and the second adjusting rod 4 realizes the positioning and fixing of the first adjusting rod 3, the second adjusting rod 4 and the five-way tube 10 on the first guide rod 1, providing reliable conditions for the front fork 5 and the rear fork to be supported in the same plane and the connecting fork to be welded in the same plane with the front fork 5 and the rear fork;

[0025] like Figure 1-2 As shown, the specific structure of the position adjustment and locking device is as follows: the position adjustment and locking device includes a slider 12, the slider 12 is adapted to be in the guide groove of the second guide rod 2, the guide groove surface of the first adjusting rod 3 and the second adjusting rod 4 is provided with a waist-shaped long hole 13, and the guide screw 17 passing through the waist-shaped long hole 13 is fixedly connected to one end of the slider 12, and the other ends of the two sliders 12 are threadedly connected with a locking screw 14 whose end is against the guide groove surface of the second guide rod 2 and is used to fix the first adjusting rod 3 and the second adjusting rod 4 that are respectively adjusted to the right angle; in the above structure, the setting of the waist-shaped long hole 13 on the first adjusting rod 3 and the second adjusting rod 4 provides a swinging condition for adjusting the angle of the first adjusting rod 3 and the second adjusting rod 4. When the angle of the first adjusting rod 3 and the second adjusting rod 4 is adjusted to the right angle, it is only necessary to tighten the locking screw 14. At this time, the lower end of the locking screw 14 is against the guide groove surface of the second guide rod 2, and the position of the slider 12 is fixed.

[0026] like Figure 4As shown, the specific structure of the middle tube positioning device is as follows: the middle tube positioning device includes an L-shaped seat 15, and a positioning cone 16 for centering and height determination of the middle tube 6 is fixed on the outer wall of the vertical plate of the L-shaped seat 15, and the middle tube 6 on the front fork 5 and the rear fork is adapted to the positioning cone 16, and the guide grooves of the first adjustment rod 3 and the second adjustment rod 4 are adapted to be equipped with T-shaped bolts, and the upper ends of the T-shaped bolts pass through the through holes on the horizontal plate of the L-shaped seat 15 and are adapted to be connected with the screw sleeve 18, and the screw sleeve 18 is fixed with an L-shaped handle 19 for facilitating the rotation of the screw sleeve; specifically, the bottom surface of the horizontal handle of the L-shaped handle 19 is higher than the bottom surface of the vertical plate of the L-shaped seat 15. The upper end surface is formed by rotating the L-shaped handle 19, so that interference with the L-shaped seat 15 can be avoided when rotating the L-shaped handle 19, thereby ensuring the smooth rotation of the L-shaped handle 19; when the five-way tube 10 on the front fork 5 and the rear fork is positioned and fixed, the nut 18 is loosened by the L-shaped handle 19. At this time, the two T-bolts move along the length direction of the guide grooves of the first adjusting rod 3 and the second adjusting rod 4 respectively, and the L-shaped seat 15 is adjusted to when the outer end of the middle tube 6 is sleeved on the positioning cone 16 and abuts against the end surface of the vertical plate of the L-shaped seat 15, the nut 18 is tightened by rotating the L-shaped handle 19. At this time, the position of the L-shaped seat 15 is fixed, and the middle tube 6 is reliably positioned.

[0027] The square tube of this technology can realize the rapid positioning and fixing of different types of front forks 5 and rear forks, provide reliable positioning conditions for welding the connecting fork with the front fork 5 and the rear fork on the same plane, solve the problems of low manual measurement accuracy and efficiency and poor welding quality in traditional welding methods, have simple structure, novel design, low cost, meet the assembly positioning requirements of different types of two-person bicycle frames, and have high use value.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A positioning fixture for assembling a two-person bicycle frame, characterized in that: The invention comprises a first guide rod (1) and a second guide rod (2) which are arranged parallel to each other and fixed on a welding platform, a first adjusting rod (3) and a second adjusting rod (4) are arranged above the first guide rod (1) and the second guide rod (2), and one end of the first adjusting rod (3) and the second adjusting rod (4) are connected to the first guide rod (1) in a position and angle-adjustable manner through a five-way positioning device, two groups of position adjustment locking devices which are respectively connected to the first adjusting rod (3) and the second adjusting rod (4) are slidably mounted on the second guide rod (2), and when the distance and angle of the first adjusting rod (3) and the second adjusting rod (4) are adjusted to the right position, the first adjusting rod (3) and the second adjusting rod (4) are fixed to the second guide rod (2) through the corresponding position adjustment locking devices, and the first adjusting rod (3) and the second adjusting rod (4) are both provided with a middle tube positioning device for positioning the middle tube (6) on the front fork (5) and the rear fork, and under the joint action of the middle tube positioning device and the five-way positioning device on the first adjusting rod (3) and the second adjusting rod (4), the front fork (5) and the rear fork are positioned and fixed in the same plane.

2. The positioning fixture for assembling a two-person bicycle frame according to claim 1, characterized in that: The five-way positioning device comprises a positioning plate (7), a T-bolt (8) and a pressure plate (9); the upper end surfaces of one end of the first adjusting rod (3) and the second adjusting rod (4) are both provided with positioning plates (7); the lower ends of the five-way tube (10) in the front fork (5) and the five-way tube (10) in the rear fork are both positioned on the positioning plate (7); and the pressure plate (9) is concentrically arranged on the upper end surfaces of the five-way tube (10); the large head end of the T-bolt (8) is adapted to the guide groove of the first guide rod (1); and the upper end of the T-bolt (8) passes through the center hole on the positioning plate (7), the through hole on the five-way tube (10) and the pressure plate (9) and is adapted to be connected with a locking nut (11), so as to realize the positioning and fixing of the first adjusting rod (3) and the second adjusting rod (4) and the five-way tube (10) on the first guide rod (1).

3. The positioning fixture for assembling a two-person bicycle frame according to claim 2, characterized in that: The positioning disc (7) is an inverted T-shaped disc with a lower end diameter greater than an upper end diameter, and the five-way pipe (10) is adapted to the upper end small-diameter disc and abuts against the upper end surface of the large-diameter disc.

4. The positioning fixture for assembling a two-person bicycle frame according to claim 1, characterized in that: The position adjustment and locking device comprises a slider (12), the slider (12) being adapted to fit in the guide groove of the second guide rod (2), the guide groove surfaces of the first adjustment rod (3) and the second adjustment rod (4) being provided with waist-shaped long holes (13), and a guide screw (17) passing through the waist-shaped long hole (13) being fixedly connected to one end of the slider (12), and the other ends of the two sliders (12) being threadedly connected with locking screws (14) whose ends are against the guide groove surface of the second guide rod (2) and are used to respectively fix the first adjustment rod (3) and the second adjustment rod (4) whose angles are adjusted into place.

5. The positioning fixture for assembling a two-person bicycle frame according to claim 1, characterized in that: The middle tube positioning device comprises an L-shaped seat (15), a positioning cone (16) is fixed on the outer wall of the vertical plate of the L-shaped seat (15), and the middle tubes (6) on the front fork (5) and the rear fork are adapted to the positioning cone (16), the guide grooves of the first adjustment rod (3) and the second adjustment rod (4) are adapted to be equipped with T-shaped bolts, and the upper ends of the T-shaped bolts pass through the through holes on the horizontal plate of the L-shaped seat (15) and are adapted to be connected with the screw sleeve (18), and the screw sleeve (18) is fixed with an L-shaped handle (19) for facilitating the rotation of the screw sleeve.

6. The positioning fixture for assembling a two-person bicycle frame according to claim 5, characterized in that: The bottom surface of the horizontal handle of the L-shaped handle (19) is higher than the upper end surface of the vertical plate of the L-shaped seat (15).

7. The positioning fixture for assembling a two-person bicycle frame according to any one of claims 1 to 6, characterized in that: The first guide rod (1) and the second guide rod (2) as well as the first adjustment rod (3) and the second adjustment rod (4) are all made of aluminum profiles with guide grooves on four side walls.

Images