CN110143131A - A general-purpose automotive fuel tank installation fixture - Google Patents

Abstract

The invention relates to the technical field of automobile assembly equipment, and discloses a general-purpose automobile oil tank installation fixture. The fixture includes a main frame and a number of installation units, each installation unit is symmetrically distributed and its position can be adjusted; the main frame includes a frame and a central main shaft, the central main shaft is arranged horizontally and horizontally, and each installation unit is slidingly connected to the central main shaft; the installation unit includes a support Shaft, fixed bracket and tightening shaft, the supporting shaft is arranged horizontally, the supporting shaft is slidably connected with the central main shaft and can slide back and forth along the central main shaft; the fixed bracket is vertically arranged on the supporting shaft, slidingly connected with the supporting shaft and sliding back and forth along the supporting shaft; The tightening shaft is arranged on the top of the fixing bracket, and is used for stretching and tightening when the fuel tank strap bolt is installed. This fixture can be adapted to the installation of fuel tanks of multiple models. It integrates upper part positioning and automatic tightening, and solves the problems of multi-model fuel tank upper part positioning fixtures that are difficult to share, low switching efficiency, and low automation level, achieving high efficiency, high flexibility, and high automation. production line purpose.

Description

A general-purpose automotive fuel tank installation fixture

technical field

The invention relates to the technical field of automobile assembly equipment, and more specifically, relates to a general-purpose automobile fuel tank installation fixture.

Background technique

The fuel tank is an important assembly component of the car. The assembly of the fuel tank generally includes the fuel tank assembly, two left and right fuel tank straps, and four fastening bolts on the straps. The installation and fastening of the fuel tank needs to be fastened to the body by the straps through the bolts. . Generally, after the fuel tank is loaded with auxiliary equipment, the operator uses a wind plate or a battery gun to pre-tighten the four bolts of the fuel tank to the vehicle body one by one, and then tightens the four bolts of the fuel tank one by one by operating the tightening shaft. The fuel tank assembly Tightening with the fuel tank requires two sets of equipment to complete. At present, two solutions are usually adopted. One is to develop a special upper part positioning fixture for each new model to meet the different fuel tanks of each model. The rear station is equipped with a single tightening shaft to tighten the fuel tank, which cannot realize the automatic tightening function of the fuel tank; The second is to share the base plate part of the upper part positioning fixture, and make a special positioning unit according to the outer size of the fuel tank of each model to meet the different fuel tanks of each model. The rear station is equipped with a single tightening shaft to fasten the fuel tank, and it is also impossible to realize the automatic tightening of the fuel tank Function.

Due to the differences in the shapes of various models, the shape of the fuel tank is quite different, and the limit points of the upper part positioning fixture are quite different, it is difficult to realize the common use of multiple models on the upper part positioning fixture. Production costs are high. On the other hand, if the tightening shaft is not integrated on the fixture, the automatic tightening function cannot be realized, and the production efficiency is low. The fixture is positioned by limiting the outer contour of the fuel tank. Different models need to switch fixture production, and there is no integrated tightening unit. The operator operates the wind plate to pre-tighten the single bolt and then operates the tightening shaft to tighten the single bolt, which is time-consuming and laborious. Therefore, it is necessary to design a new fuel tank installation fixture.

Contents of the invention

In order to overcome the defects described in the above-mentioned prior art, the present invention provides a general-purpose automotive fuel tank installation fixture, which can be adapted to the installation of fuel tanks of multiple models, integrates upper part positioning and automatic tightening, and solves the difficulty of sharing the upper part positioning fixture of multi-model fuel tanks , Low switching efficiency and low level of automation to achieve high efficiency, high flexibility and high automation production line.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

A general-purpose automotive fuel tank installation fixture, including a main frame and several installation units, each installation unit is symmetrically distributed and its position can be adjusted; The main shafts are all slidably connected; the installation unit includes a supporting shaft, a fixed bracket and a tightening shaft, the supporting shaft is arranged horizontally, and the supporting shaft is slidably connected with the middle main shaft and can slide back and forth along the middle main shaft; the fixed bracket is vertically arranged on the The supporting shaft is slidably connected with the supporting shaft and slides back and forth along the supporting shaft; the tightening shaft is arranged on the top of the fixing bracket, and is used for stretching and tightening when the fuel tank strap bolt is installed.

The installation units are symmetrically distributed on both sides of the main shaft in the middle, and the installation units can be moved to the corresponding installation points through the sliding adjustment between the components. Tighten function.

Further, the installation unit further includes a rotating bracket, which is rotatably connected to the fixed bracket to adjust the vertical angle of the fixed bracket; the rotating bracket is also provided with a locking pin. The rotating bracket is mainly used to realize the angle adjustment of the tightening shaft, and is suitable for the positions of the fuel tank strap bolts of various specifications. The anti-rotation pin is mainly used for clamping the rotating bracket to avoid self-rotation.

Further, the installation unit also includes a sliding bracket and a cylinder, one side of the sliding bracket is slidingly connected to the fixed bracket, and the other side is rotationally connected to the rotating bracket; the two ends of the cylinder are respectively fixed to the sliding bracket and the fixed bracket, For adjusting the working height of the fixed bracket. The cylinder is used in conjunction with the sliding bracket to greatly adjust the working height of the tightening shaft. In special cases, a double cylinder structure can also be adopted.

Further, the sliding fit length of the sliding bracket and the fixed bracket is greater than the maximum elongation of the cylinder. In order to ensure that the telescopic state of the cylinder is not affected, the sliding fit length between the sliding bracket and the fixed bracket must be greater than the maximum elongation of the cylinder.

Further, the horizontal angle between the fulcrum and the central main axis is a right angle.

Further, it also includes a positioning unit for realizing the positioning of the clamp and the vehicle body, the positioning unit is slidably connected with the frame; the positioning unit includes a positioning pin and a fixing plate, the positioning pin is vertically arranged on the fixing plate and is used to cooperate with the positioning hole of the vehicle body, The fixing plate is slidably matched with the frame for position adjustment; the positioning pin is also sleeved with a buffer spring, and the buffer spring is compressed between the positioning pin and the fixing plate. The positioning unit is mainly fixed at the frame position of the main frame, and the relative position of the fixture and the vehicle body is determined through the cooperation of the positioning pin of the positioning unit with the positioning hole of the vehicle body.

Further, plug pins for stopping are provided at the connection positions between the support shaft and the central main shaft, the connection positions between the fixed bracket and the support shaft, and the connection positions between the fixed plate and the frame. The plug-in pin is mainly used to fix the position of the sliding part. After the position of the positioning unit and the installation unit are determined through sliding adjustment, the plug-in pin is used to fix its position.

Further, the central main shaft is provided with a support base for cushioning and draining the oil tank. Before the fuel tank is installed and fixed, put the fuel tank pad on the support seat, and then adjust each installation unit to the bolt position of the fuel tank strap for installation. Wherein, the supporting seat is arranged at the middle section of the central main shaft.

Further, the tightening shaft is also provided with strap positioning pins for positioning the straps of the fuel tank, and the strap positioning pins are arranged on both sides of the bolt holes of the tightening shaft. In order to better determine the position of the fuel tank strap, there are strap positioning pins on both sides of the tightening shaft to avoid the strap swinging from side to side during the installation process and affecting the assembly.

Further, the clamp is also connected with a PLC system and a driving motor, and the main frame is also provided with an emergency switch for emergency operation, and the emergency switch is connected with the driving motor. When a wrong operation occurs during the work of the fixture, the emergency switch can be pressed to stop the fixture and continue to operate.

Compared with the prior art, the beneficial effects of the present invention are: the present invention discloses a general-purpose automobile fuel tank installation fixture, which can quickly adjust the position of the installation unit of the fixture according to the installation points of fuel tanks of different shapes and structures, and is suitable for the installation of fuel tanks of multiple models. It has good versatility. At the same time, the fixture integrates an automatic tightening function, which integrates the installation and positioning of the fuel tank and the automatic tightening of the fuel tank strap bolts, which helps to improve production efficiency.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention in an installed state.

Fig. 2 is a side view of the structure in the installed state of the present invention.

Fig. 3 is a schematic diagram of the overall structure of the present invention.

Fig. 4 is a top view of the overall structure of the present invention.

Fig. 5 is a schematic diagram of the overall structure of the positioning unit.

Fig. 6 is a schematic diagram of the overall structure of the installation unit on the reference side.

Fig. 7 is an exploded view of the overall structure of the installation unit on the reference side.

Fig. 8 is a schematic diagram of the overall structure of the tightening shaft.

FIG. 9 is a first schematic diagram of the overall structure of the installation unit on the non-reference side.

Fig. 10 is a second schematic diagram of the overall structure of the installation unit on the non-reference side.

Figure 11 is the first exploded view of the overall structure of the installation unit on the non-reference side.

Figure 12 is the second exploded view of the overall structure of the installation unit on the non-reference side.

Fig. 13 is a schematic diagram of the overall structure of the support seat.

Among them, 1 main frame, 2 installation unit, 3 positioning unit, 4 plug pin, 5 support seat, 6 emergency switch, 11 frame, 12 middle main shaft, 21 supporting shaft, 22 fixed bracket, 23 tightening shaft, 24 rotating bracket, 241 anti-rotation pin, 242 shaft hole, 25 sliding bracket, 26 cylinder, 31 positioning pin, 32 fixed plate, 34 buffer spring, 231 strap positioning pin, 232 spring expansion pin, 233 sleeve, 234 positioning pin bracket, 251 sliding Rail, 252 slide blocks, 253 rotating shafts, 51 seat frames, 52 support shafts, 53 support blocks, 54 support sleeves, 55 springs, 7 fuel tanks, 71 fuel tank straps.

Detailed ways

The accompanying drawings are for illustrative purposes only, and should not be construed as limitations on this patent; in order to better illustrate this embodiment, certain components in the accompanying drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art It is understandable that some well-known structures and descriptions thereof may be omitted in the drawings. The positional relationship described in the drawings is for illustrative purposes only, and should not be construed as a limitation on this patent.

In the drawings of the embodiments of the present invention, the same or similar symbols correspond to the same or similar components; The orientation or positional relationship indicated by "long" and "short" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific Orientation, construction and operation in a specific orientation, so the terms describing the positional relationship in the drawings are for illustrative purposes only, and should not be construed as limitations on this patent. For those of ordinary skill in the art, it can be understood according to specific circumstances The specific meaning of the above terms.

Below by specific embodiment, in conjunction with accompanying drawing, the technical solution of the present invention is described in further detail:

Example

As shown in Figures 1-4, this embodiment provides a universal automotive fuel tank installation fixture, including a main frame 1, four installation units 2 and two positioning units 3, each installation unit 2 is symmetrically distributed and its position is adjustable . The main frame 1 includes a frame 11 and a central main shaft 12. The central main shaft 12 is arranged in the middle of the main frame 1 horizontally and horizontally. Each installation unit 2 is slidably connected to the central main shaft 12.

Wherein, as shown in Fig. 3-4, the positioning unit 3 is arranged symmetrically on the frame 11 on both sides, and is slidably connected with the frame 11, and is mainly used to realize the positioning of the fixture and the vehicle body. Specifically, as shown in Figure 5, the positioning unit 3 includes a positioning pin 31 and a fixing plate 32. The positioning pin 31 is vertically arranged on the fixing plate 32 and can slide up and down slightly. A buffer spring 34 is sleeved, and the buffer spring 34 is compressed between the positioning pin 31 and the fixing plate 32. Under the elastic force of the buffer spring 34, the positioning pin 31 flexibly fits with the positioning hole of the vehicle body. In addition, the fixing plate 32 is slidably matched with the frame 11 , and the position of the fixing plate 32 on the frame 11 is slidably adjusted, so as to adjust the position of the positioning pin 31 and adapt to the positioning holes of vehicle bodies of different models.

Further, the connection position between the fixed plate 32 and the frame 11 is provided with a plug-in pin 4 for stopping. After the positioning pin 31 is moved to a suitable position, the relative position of the frame 11 and the fixed plate 32 is adjusted by using the plug-in pin 4 . Fix to prevent the position of the fixed plate 32 from shifting.

In this embodiment, there are altogether four installation units 2 distributed in a rectangular shape, and divided into a reference side and a non-reference side with the central axis 12 as the axis of symmetry. The structures of the installation units 2 on both sides can be different.

Specifically, as shown in Figures 6-7, the installation unit 2 on the reference side includes a support shaft 21, a fixed bracket 22, and a tightening shaft 23. The support shaft 21 is arranged horizontally. 12 slides back and forth, and the horizontal angle between the support shaft 21 and the middle main shaft 12 is a right angle, which is convenient for building XYZ orientation data calculation. Meanwhile, the fixing bracket 22 is vertically arranged on the support shaft 21 , is slidably connected with the support shaft 21 and slides back and forth along the support shaft 21 . In addition, at the connection position between the support shaft 21 and the middle main shaft 12, and at the connection position between the fixed bracket 22 and the support shaft 21, there are also plug-in pins 4 for stopping. After facing the position, use plug-in pin 4 to fix its relative position.

Wherein, as shown in FIG. 8 , the tightening shaft 23 is vertically arranged on the top of the fixing bracket 22 , and is mainly used for stretching and tightening when the fuel tank strap bolt is installed. The tightening shaft 23 adopts the existing tightening shaft 23 with telescopic function, which can absorb the slight height difference of fuel tanks of different models. The tightening shaft 23 is mainly fixed on the fixed bracket 22 through threaded connection, and the tightening shaft 23 is provided with a strap positioning pin 231 and a spring telescopic pin 232 for positioning the fuel tank strap, and the strap positioning pin 231 is located at the head of the tightening shaft 23. Both sides of the bolt hole are fixed by the sleeve 233. In addition, the tightening shaft 23 is also provided with a positioning pin bracket 234. One end of the spring expansion pin 232 is fixed on the positioning pin bracket 234, and the other end passes through the sleeve 233, and is connected with the sleeve. The barrel 233 is a slip fit.

Specifically, as shown in FIGS. 9-12 , the installation unit 2 on the non-reference side is based on the structure of the installation unit 2 on the reference side, and a rotating bracket 24 , a sliding bracket 25 and an air cylinder 26 are added. Wherein, the sliding bracket 25 is slidably connected with the fixed bracket 22. The sliding bracket 25 is provided with a slide rail 251 and a slide block 252. The 251 slides to realize the adjustment in the Z direction and realize the fast adjustment of the height of the tightening point of different models. The two ends of the cylinder 26 are rotated and fixed to the sliding bracket 25 and the fixed bracket 22, respectively, to provide the sliding power of the fixed bracket 22 in the Z direction. In this embodiment, the structure of double cylinders 26 is adopted to achieve a larger sliding distance adjustment. Furthermore, the length of the sliding fit between the sliding bracket 25 and the fixed bracket 22 must be greater than the maximum elongation of the cylinder 26 to ensure that the movement of the fixed bracket 22 is not interfered when the cylinder 26 is fully stretched.

Simultaneously, the sliding bracket 25 is rotationally connected with the rotating bracket 24. Specifically, the sliding bracket 25 is provided with a rotating shaft 253, and the rotating bracket 24 is provided with a shaft hole 242 matched therewith. . Moreover, the rotating bracket 24 is also provided with a locking pin 241, which is used to clamp the relative position of the rotating bracket 24 and the sliding bracket 25. After the angle adjustment is completed, the locking pin 241 is clamped to avoid The rotating bracket 24 or the sliding bracket 25 rotates by itself.

Therefore, the rotating bracket 24 is slidably connected with the supporting shaft 21 and slides back and forth along the supporting shaft 21, and the position of the rotating bracket 24 on the supporting shaft 21 is adjusted by sliding, and the positions of the fixing bracket 22 and the tightening shaft 23 are indirectly adjusted. Similarly, at the connection position between the support shaft 21 and the rotating bracket 24, there is a plug-in pin 4 for stopping. After the Y-direction position of the rotating bracket 24 is slid and adjusted, the relative position is fixed by using the plug-in pin 4 .

Further, as shown in FIG. 13 , the middle main shaft 12 is provided with a support base 5 for cushioning and draining the fuel tank. The support base 5 in this embodiment is located at the center of the middle main shaft 12 and has a symmetrical structure. Specifically, the support seat 5 includes a seat frame 51, a support shaft 52, a support block 53 and a support sleeve 54, the support sleeve 54 is vertically fixed on the seat frame 51 through the support shaft 52, and the support block 53 is sleeved on the support sleeve 54 In, and is provided with spring 55 to carry out elastic regulation.

In addition, this embodiment is also connected with a PLC system and a drive motor. The main frame 1 is provided with an emergency switch 6 for emergency operation. The emergency switch 6 is connected to the drive motor. Switch 6, stop the fixture and continue to operate.

When performing the installation operation, the relative position of the clamp and the vehicle body is firstly determined by the positioning unit 3 , that is, by the cooperation of the positioning pin 31 with the positioning hole of the vehicle body. Then, put the fuel tank pad with straps on the support base 5, and adjust the direction of the reference side mounting unit 2 in the XY direction by sliding to determine the fixed point where the reference side mounting unit 2 is positioned to the fastening bolt of the fuel tank strap. Next, the installation unit 2 on the non-reference side is used to determine the fixed point of the fuel tank through the XY direction and the rotation of the rotating bracket 24, and then use the cylinder 26 to quickly adjust the height of the tightening shaft 23, and use the strap positioning pin 231 and the spring telescopic pin to realize the strap. position for tightening.

The fixture has a high degree of flexibility. Through the adjustment of the XYZ direction and angle, the fast change and adjustment of the 2 positions of the installation unit can be realized. It is suitable for the installation of different fuel tanks of multiple models and is more versatile. Moreover, the fixture also integrates the function of automatic tightening. , greatly improving production efficiency.

Apparently, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, on the basis of the above description, other changes or changes in different forms can also be made. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (10)

1. A general-purpose automobile oil tank installation fixture is characterized in that: comprise main frame (1) and some installation units (2), each installation unit (2) is symmetrically distributed and position is adjustable; Described main frame (1) It includes a frame (11) and a central main shaft (12), the central main shaft (12) is arranged horizontally and laterally, and each installation unit (2) is slidably connected to the central main shaft (12); The installation unit (2) includes a support shaft (21), a fixed bracket (22) and a tightening shaft (23), the support shaft (21) is arranged horizontally, and the support shaft (21) is slidably connected to the central main shaft (12) and Can slide back and forth along the middle main shaft (12); the fixed bracket (22) is vertically arranged on the support shaft (21), is slidably connected with the support shaft (21) and slides back and forth along the support shaft (21); the tightening shaft (23) is located at the top of the fixed bracket (22), and is used for stretching and tightening when the fuel tank strap bolts are installed. 2. A general-purpose automotive fuel tank installation fixture according to claim 1, characterized in that: the installation unit (2) also includes a rotating bracket (24), and the rotating bracket (24) is rotationally connected with the fixed bracket (22) to adjust the vertical angle of the fixed bracket (22); the rotating bracket (24) is also provided with a locking pin (241). 3. A kind of universal automobile fuel tank installation fixture according to claim 2, is characterized in that: described installation unit (2) also comprises sliding support (25) and cylinder (26), and described sliding support (25) one One side is slidably connected with the fixed bracket (22), and the other side is rotatably connected with the rotating bracket (24); the two ends of the cylinder (26) are respectively fixed to the sliding bracket (25) and the fixed bracket (22) for adjusting and fixing The working height of support (22). 4. A universal automotive fuel tank installation fixture according to claim 3, characterized in that: the sliding fit length of the sliding bracket (25) and the fixed bracket (22) is greater than the maximum elongation of the cylinder (26) value. 5. A universal automotive fuel tank installation fixture according to claim 1, characterized in that: the horizontal angle between the support shaft (21) and the middle main shaft (12) is a right angle. 6. A general-purpose automotive fuel tank installation fixture according to claim 1, characterized in that: it also includes a positioning unit (3) for realizing the positioning of the fixture and the vehicle body, and the positioning unit (3) slides with the frame (11) connection; the positioning unit (3) includes a positioning pin (31) and a fixing plate (32), the positioning pin (31) is vertically arranged on the fixing plate (32) and is used to cooperate with the positioning hole of the vehicle body, and the fixing plate (32) Slidingly fit with the frame (11) for position adjustment; the positioning pin (31) is also sleeved with a buffer spring (34), and the buffer spring (34) is compressed between the positioning pin (31) and the fixing plate (32). 7. A universal automotive fuel tank installation fixture according to any one of claims 6, characterized in that: at the connection position between the support shaft (21) and the middle main shaft (12), the fixed bracket (22) and the support The connecting position of the shaft (21) and the connecting position of the fixed plate (32) and the frame (11) are all provided with plug pins (4) for stopping. 8. A general-purpose automotive fuel tank installation fixture according to claim 1, characterized in that: the middle spindle (12) is provided with a support seat (5) for cushioning the fuel tank. 9. A universal automotive fuel tank installation fixture according to claim 1, characterized in that: the tightening shaft (23) is also provided with a strap positioning pin (231) for positioning the fuel tank strap, and the strap Positioning pins (231) are arranged on both sides of the bolt holes of the tightening shaft (23). 10. A general-purpose automotive fuel tank installation fixture according to claim 1, characterized in that: the fixture is also connected with a PLC system and a drive motor, and the main frame (1) is also provided with an emergency switch for emergency operation (6), the emergency switch (6) is connected with the driving motor.