An auxiliary fixture for installing a commercial vehicle cab impactor

Abstract

The present invention relates to an auxiliary fixture for installing a commercial vehicle cab striker, comprising a fixture body, the fixture body being a frame structure, the bottom of which is slidably connected to a movable base, a support frame being arranged inside the fixture body, both ends of the support frame being connected to the fixture body through a slide rail and slider structure, and both ends of the support frame being arranged with a lifting assembly and being lifted and lowered under the drive of the lifting assembly. The present invention can achieve the purpose of quickly and accurately replacing a commercial vehicle cab striker.

Description

Technical Field

[0001] The invention relates to the technical field of automobile passive safety detection, in particular to an auxiliary clamp for installing a commercial vehicle cab impactor. Background Art

[0002] The national standard JT / T 1178.1-2018 "Technical Safety Requirements for Commercial Trucks Part 1: Trucks" and the EU standard ECE R29 "Uniform Provisions for Vehicle Certification with Respect to Occupant Protection in Commercial Vehicle Cabs" stipulate the test methods and requirements for the structural strength of commercial vehicle cabs, including the double A-pillar impact test of the cab and the 20° side impact test of the top strength test.

[0003] In order to meet the above test functions and reduce the footprint of the test equipment, the testing agency integrated the double A-pillar impact test and the side 20° impact test functions on the same commercial vehicle cab pendulum impact test bench. While reducing the footprint, the testing equipment also faces a problem, that is, the problem of replacing the impactor during the test. In the absence of auxiliary fixtures, replacing the impactor is very time-consuming and inconvenient, which greatly increases the test cycle and reduces the test efficiency. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an auxiliary fixture for installing a commercial vehicle cab striker, so as to achieve the purpose of quickly and accurately replacing the commercial vehicle cab striker.

[0005] The technical solution adopted by the present invention to solve the technical problem is: to provide an auxiliary clamp for installing a commercial vehicle cab impactor, comprising a clamp body, the clamp body is a frame structure, a movable base is slidably connected to the bottom of the clamp body, a support frame is arranged inside the clamp body, both ends of the support frame are connected to the clamp body through a slide rail slider structure, and both ends of the support frame are provided with lifting components and are lifted and lowered under the drive of the lifting components;

[0006] The support frame includes an upper support frame and a lower support frame, and the upper support frame and the lower support frame are arranged in parallel up and down and connected at both ends by a side support. The upper support frame includes two upper long side beams arranged side by side and a support beam connected between the two ends of the two upper long side beams. The two ends of the upper long side beams located on the front side are horizontally extended forward and provided with connecting beams. The connecting beams are provided with positioning pins that pass through the side brackets and the connecting beams in sequence from the outside in a horizontal direction, and slider mounting plates are vertically installed at both ends of the side brackets.

[0007] The auxiliary fixture described in the present invention has a plurality of movable and adjustable parts. The first is a movable base, which can move the entire auxiliary fixture to the bottom of the swing arm of the commercial vehicle cab pendulum impact test bench. The second is that the movable base and the fixture body can slide left and right to adjust the position of the fixture body, thereby adjusting the horizontal position of the support frame. The third is to drive the lifting assembly to make the support frame move up and down, and the double A-pillar impactor and the side 20° impactor can be mounted on the support frame, and one or two impactors can be selected and placed on the support frame at the same time. Specifically, the double A-pillar impactor is mainly placed on the upper support frame of the support frame, located between the two upper long side beams, and the lower end of the side 20° impactor is mounted on the lower support frame, and the inclined surface on one side of the side 20° impactor is positioned by a locating pin passing through the side bracket and the connecting beam. The height of the double A-pillar impactor and the side 20° impactor can be adjusted by lifting the entire support frame, and the horizontal position can be adjusted by the movable base to meet the needs of disassembly and installation of the double A-pillar impactor and the side 20° impactor.

[0008] Preferably, the lifting assembly includes a gearbox installed at the bottom of the clamp body, one side of the gearbox is connected to the motor and the upper end is vertically connected to a screw rod, the upper end of the screw rod passes through the side bracket and is connected to the clamp body, and a ball nut fixed on the side bracket is sleeved on the screw rod. The output of the motor is converted into the rotation of the screw rod through the gearbox, and the rotation of the screw rod is transformed into the lifting of the ball nut. The ball nut is fixedly connected to the side bracket of the support frame, so the lifting of the ball nuts on both sides realizes the lifting of the support frame, and the transmission of the screw rod is relatively precise and easy to control.

[0009] Preferably, the side bracket includes an upper side beam and a lower side beam, and the upper side beam and the lower side beam are connected by at least one side column. Such a structure has relatively large strength. A ball nut mounting block is embedded in the middle of the lower side beam to facilitate the fixed installation of the ball nut. A slider mounting plate is installed between the two ends of the upper side beam and the lower side beam. The slider in the slide rail slider structure can be installed through the slider mounting plate, and the connection is relatively firm. At least two through holes for the positioning pin to pass through are set on one side of the upper side beam, and the positioning pin can select different through holes for connection according to different side 20° impactors.

[0010] Preferably, the lower support frame includes two side-by-side lower long side beams and a short side beam connected between the two long side beams. The structure is relatively simple and can support the bottom of the side 20° impactor.

[0011] Preferably, the clamp body includes a lower longitudinal beam and a lower side beam connected in a rectangular shape, a main body column is vertically installed at the connection between the lower longitudinal beam and the lower side beam, and the lower longitudinal beams are installed with bottom slider mounting plates side by side, the lower ends of the bottom slider mounting plates are connected to the guide rails on the movable base through sliders, and the upper ends of the main body columns on the same side of both ends are connected through upper side beams, the middle part of the lower side beam is opened and the lower end is installed with a motor mounting plate, and the middle lower end of the upper side beam is installed with a bearing seat connected to the bearing seat cover at the upper end of the screw rod, which supports the upper end of the screw rod so that the screw rod can rotate smoothly, and a slide rail base corresponding to the slider mounting plate is arranged on the relatively inner side walls of the main body columns, the clamp body needs to support the entire support frame and the impactor, and the strength requirement is relatively high, and a lifting component also needs to be installed.

[0012] Preferably, limit switches are installed on the upper and lower sides of the slide rail base on the relatively inner side walls of the main body column to limit the up and down lifting distance of the support frame to avoid collision between the support frame and the fixture body.

[0013] Preferably, two limiting beams are arranged between the lower longitudinal beams to avoid collision between the clamp body and the movable base.

[0014] Preferably, the movable base is rectangular, and universal rollers are provided at the lower ends of the front and rear sides, and slide rail bases are provided at both ends of the upper side of the movable base. The universal rollers can change directions at will, facilitating fine-tuning of the movement of the entire auxiliary clamp.

[0015] Preferably, the outer middle parts of the support beams at both ends of the upper support frame are connected to the side supports through reinforcing beams. Since the double A-pillar impactor is relatively heavy, the upper support frame is strengthened by adding reinforcing beams.

[0016] Beneficial effects: The present invention relates to an auxiliary fixture for installing a commercial vehicle cab impactor, which adopts a universal pulley and a slide rail slider mechanism to realize the free adjustment of the impactor's position in the horizontal plane; adopts a ball screw mechanism to realize the free adjustment of the impactor's position in the vertical direction; adopts a separately operated motor to realize the precise adjustment of the different heights of the two ends of the impactor in the vertical direction; adopts a limit switch to realize the vertical limitation of the support frame to avoid the collision between the support frame and the fixture body; the fixture body adopts a limit beam to realize the limitation of the fixture body along the longitudinal direction of the impactor to avoid the collision between the fixture body and the movable base. In summary, the present invention has the characteristics of simple structure and convenient operation, can realize the rapid and accurate replacement of the commercial vehicle cab pendulum impactor, and improve the efficiency of the commercial vehicle cab structural strength test. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a three-dimensional structural diagram of the clamp assembly of the present invention;

[0018] Figure 2 It is a three-dimensional structural diagram of the clamp body of the present invention;

[0019] Figure 3 It is a three-dimensional structural diagram of the support frame of the present invention;

[0020] Figure 4 is a three-dimensional structural diagram of the side bracket of the present invention;

[0021] Figure 5 It is a three-dimensional structural diagram of the lower support frame of the present invention;

[0022] Figure 6 It is a three-dimensional structural diagram of the upper support frame of the present invention;

[0023] Figure 7 It is a three-dimensional structural diagram of the lifting assembly of the present invention;

[0024] Figure 8 It is a three-dimensional structural diagram of the movable base of the present invention;

[0025] Fig. 9 is a schematic structural diagram of placing a double A-pillar impactor according to the present invention;

[0026] Fig.10 This is a schematic structural diagram of the present invention in which a 20° impactor is placed on the side;

[0027] Fig.11 It is a schematic structural diagram of the installation of the side 20° impactor and the swing arm of the present invention;

[0028] Fig.12 It is a schematic structural diagram of the installation of the double A-pillar impactor and the swing arm of the present invention.

[0029] Illustration: 1. Movable base; 2. Clamp body; 3. Support frame; 4. Lifting assembly; 5. Slide rail slider structure; 6. Positioning pin; 7. Double A-pillar impactor; 8. Side 20° impactor; 9. Swing arm; 11. Universal roller; 12. Slide rail base; 20. Signal line; 14. Display instrument; 15. Communication line; 16. Pressure gauge; 17. Pressure regulating valve; 18. Pressure switch box; 19. Filter; 20. Lower longitudinal beam; 21. Upper side beam; 23. Bearing seat; 24. Motor mounting plate; 25. Lower side beam; 26. Bottom slide installation Plate; 27, limit beam; 28, main body column; 29, limit switch; 31, upper support frame; 32, side bracket; 33, lower support frame; 41, motor; 42, gearbox; 43, screw rod; 44, ball nut; 45, bearing seat cover; 311, upper long side beam; 312, support beam; 313, connecting beam; 314, reinforcement beam; 321, side column; 322, upper side beam; 323, slider mounting plate; 324, perforation; 325, ball nut mounting block; 326, lower side beam; 331, lower long side beam; 332, short side beam. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0031] like Figure 1-12 As shown, an embodiment of the present invention relates to an auxiliary fixture for installing a commercial vehicle cab striker, comprising a fixture body 2, wherein the fixture body 2 is a frame structure, and a movable base 1 is slidably connected to the bottom thereof, and a support frame 3 is arranged inside the fixture body 2, and both ends of the support frame 3 are connected to the fixture body 2 through a slide rail slider structure 5, and both ends of the support frame 3 are provided with a lifting assembly 4 and are lifted and lowered under the drive of the lifting assembly 4;

[0032] The support frame 3 includes an upper support frame 31 and a lower support frame 33, and the upper support frame 31 and the lower support frame 33 are arranged in parallel up and down and connected at both ends by a side bracket 32. The upper support frame 31 includes two upper long side beams 311 arranged side by side and a support beam 312 connected between the two ends of the two upper long side beams 311. The two ends of the upper long side beams 311 located on the front side are horizontally extended forward and provided with connecting beams 313. The connecting beams 313 are provided with positioning pins 6 that pass through the side brackets 32 and the connecting beams 313 in sequence from the outside. Both ends of the side brackets 32 are vertically installed with slider mounting plates 323.

[0033] The auxiliary fixture of the present invention has a plurality of movable and adjustable parts, the first of which is a movable base 1, which can move the entire auxiliary fixture to the bottom of the swing arm 9 of the commercial vehicle cab pendulum impact test bench, the second is that the movable base 1 and the fixture body 2 can slide left and right to adjust the position of the fixture body 2, thereby adjusting the horizontal position of the support frame 3, and the third is to drive the lifting component 4 to make the support frame 3 move up and down, and the double A-pillar impactor 7 and the side 20° impactor 8 can be mounted on the support frame 3, and one or two impactors can be placed on the support frame 3 at the same time, which is convenient to use. Specifically, the double A-pillar impactor 7 is mainly placed on the upper support frame 31 of the support frame 3, between the two upper long side beams 311, and the lower end of the side 20° impactor 8 is mounted on the lower support frame 33, and the inclined surface on one side of the side 20° impactor 8 is positioned by the positioning pin 6 passing through the side bracket 32 ​​and the connecting beam 313. The height of the double A-pillar impactor 7 and the side 20° impactor 8 can be adjusted by lifting and lowering the entire support frame 3, and the horizontal position can be adjusted by the movable base 1, so as to meet the needs of disassembly and installation of the double A-pillar impactor 7 and the side 20° impactor 8.

[0034] As a first embodiment of the present invention:

[0035] According to Appendix C.2.3 of JT / T 1178.1-2018 "Technical Requirements for Safety of Commercial Trucks Part 1: Trucks", before conducting the double A-pillar impact test (assuming that the 20° side impact has been completed), the impactor needs to be replaced. First, move the auxiliary fixture with the double A-pillar impactor 7 to the bottom of the swing arm 9 of the commercial vehicle cab pendulum impact test bench. Fig.11 As shown, pull out the positioning pin 6 on the support frame 3, roughly adjust the relative position of the side 20° impactor 8 and the lower support frame 33 through the control interface of the commercial vehicle cab pendulum impact test bench, and then slowly adjust the height of the lower support frame 33 through the lifting assembly 4, so that the lower support frame 33 and the side 20° impactor 8 are gradually in contact, insert the positioning pin 6 onto the support frame 3, radially limit the side 20° impactor 8, and then disassemble the side 20° impactor 8 and separate the side 20° impactor 8 from the swing arm 9.

[0036] Then, the swing arm 9 is raised through the control interface of the commercial vehicle cab pendulum impact test bench, and the relative position of the swing arm 9 and the double A-pillar impactor 7 is roughly adjusted. The longitudinal position of the double A-pillar impactor 7 and the swing arm 9 is adjusted through the movable base 2. The height of the upper support frame 31 is slowly adjusted through the lifting component 4, so that the double A-pillar impactor 7 is gradually in contact with the swing arm 9. After the position is completely adjusted (after long-term use, the heights of the mounting holes at both ends of the swing arm 9 from the ground may be inconsistent. At this time, the heights of the two ends of the support frame 3 can be precisely adjusted separately through the motors 41 at both ends), the double A-pillar impactor 7 is connected to the swing arm 9 by screws. Finally, the swing arm 9 is raised, and the auxiliary fixture with the side 20° impactor 8 is moved to the fixture storage position. The replacement of the commercial vehicle cab impactor is completed.

[0037] The above embodiment is only an example. The double A-pillar impactor 7 may be removed from the swing arm 9 and replaced with a 20° side impactor 8. The double A-pillar impactor 7 or the 20° side impactor 8 may also be removed or installed separately. The operation process may refer to the above embodiment.

[0038] Preferably, the lifting assembly 4 includes a gearbox 42 installed at the bottom of the clamp body 2, one side of the gearbox 42 is connected to the motor 41 and the upper end is vertically connected to a screw rod 43, the upper end of the screw rod 43 passes through the side bracket 32 ​​and is connected to the clamp body 2, and a ball nut 44 fixed on the side bracket 32 ​​is sleeved on the screw rod 43. The output of the motor 41 is converted into the rotation of the screw rod 43 through the gearbox 42, and the rotation of the screw rod 43 is transformed into the lifting and lowering of the ball nut 44. The ball nut 44 is fixedly connected to the side bracket 32 ​​of the support frame 3, so the lifting and lowering of the ball nuts 44 on both sides realizes the lifting and lowering of the support frame 3, and the transmission of the screw rod 43 is relatively precise and easy to control.

[0039] Preferably, the side bracket 32 ​​includes an upper side beam 322 and a lower side beam 326, and the upper side beam 322 and the lower side beam 326 are connected by at least one side column 321, so that the structural strength is relatively large. A ball nut mounting block 325 is embedded in the middle of the lower side beam 326 to facilitate the fixed installation of the ball nut 44. A slider mounting plate 323 is installed between the two ends of the upper side beam 322 and the lower side beam 326, and the slider in the slide rail slider structure 5 can be installed through the slider mounting plate 323, and the connection is relatively firm. One side of the upper side beam 322 is provided with at least two through holes 324 for the positioning pin 6 to pass through, and the positioning pin 6 can select different through holes 324 for connection according to different side 20° impactors 8.

[0040] Preferably, the lower support frame 33 includes two side-by-side lower long side beams 331 and a short side beam 332 connected between the two long side beams 311 , and has a relatively simple structure, and can support the bottom of the side 20° impactor 8 .

[0041] Preferably, the clamp body 2 includes a lower longitudinal beam 20 and a lower side beam 25 connected in a rectangular shape, and a body column 28 is vertically installed at the connection between the lower longitudinal beam 20 and the lower side beam 25, and the lower longitudinal beam 20 is installed with a bottom slider mounting plate 26 in parallel, and the lower end of the bottom slider mounting plate 26 is connected to the guide rail on the movable base 1 through a slider, and the upper ends of the body columns 28 on the same side of the two ends are connected through the upper side beam 21, the middle part of the lower side beam 25 is opened and the lower end is installed with a motor mounting plate 24, and the middle lower end of the upper side beam 21 is installed with a bearing seat 23 connected to the bearing seat cover 45 at the upper end of the screw rod 43, which supports the upper end of the screw rod 43 so that the screw rod 43 can rotate smoothly, and the relative inner side wall of the body column 28 is provided with a slide rail base 12 corresponding to the slider mounting plate 323, the clamp body 2 needs to support the entire support frame 3 and the impactor, and the strength requirement is relatively high, and the lifting component 4 also needs to be installed.

[0042] Preferably, limit switches 29 are installed on the upper and lower sides of the slide rail base 12 on the opposite inner side walls of the main body column 28 to limit the up and down lifting distance of the support frame 3 to avoid collision between the support frame 3 and the fixture body 2.

[0043] Preferably, a plurality of limiting beams 27 are arranged between the lower longitudinal beams 20 to avoid collision between the clamp body 2 and the movable base 1 .

[0044] Preferably, the movable base 1 is rectangular, and universal rollers 11 are provided at the lower ends of the front and rear sides. Slide rail bases 12 are provided at both ends of the upper side of the movable base 1. The universal rollers 11 can change direction at will, which facilitates the fine adjustment of the movement of the entire auxiliary clamp.

[0045] Preferably, the outer middle part of the support beam 312 at both ends of the upper support frame 31 is connected to the side support 32 through a reinforcing beam 314. Since the double A-pillar impactor 7 is relatively heavy, the upper support frame 31 is strengthened by adding a reinforcing beam 314.

Claims

1. An auxiliary clamp for installing a commercial vehicle cab impactor, comprising a clamp body (2), characterized in that: The clamp body (2) is a frame structure, the bottom of which is slidably connected to a movable base (1), a support frame (3) is arranged inside the clamp body (2), both ends of the support frame (3) are connected to the clamp body (2) via a slide rail and slider structure (5), and both ends of the support frame (3) are provided with lifting components (4) and are lifted and lowered under the drive of the lifting components (4); The support frame (3) comprises an upper support frame (31) and a lower support frame (33), the upper support frame (31) and the lower support frame (33) are arranged in parallel up and down and are connected at both ends via a side support (32), the upper support frame (31) comprises two upper long side beams (311) arranged side by side and a support beam (312) connected between the two ends of the two upper long side beams (311), both ends of the upper long side beams (311) located on the front side are horizontally extended forward and are provided with connecting beams (313), the connecting beams (313) are provided with positioning pins (6) which pass through the side support (32) and the connecting beam (313) in sequence from the outside, and both ends of the side support (32) are vertically installed with slider mounting plates (323); The lifting assembly (4) comprises a gearbox (42) mounted at the bottom of the clamp body (2); one side of the gearbox (42) is connected to the motor (41) and the upper end is vertically connected to a screw rod (43); the upper end of the screw rod (43) passes through the side bracket (32) and is connected to the clamp body (2); a ball nut (44) fixed to the side bracket (32) is sleeved on the screw rod (43); the lower support frame (33) comprises two lower long side beams (331) arranged side by side and a short side beam (332) connected between the two long side beams (311); The clamp body (2) includes a lower longitudinal beam (20) and a lower side beam (25) connected in a rectangular shape, a body column (28) is vertically installed at the connection between the lower longitudinal beam (20) and the lower side beam (25), and the lower longitudinal beam (20) is installed with a bottom slider mounting plate (26) in parallel, the lower end of the bottom slider mounting plate (26) is connected to the guide rail on the movable base (1) through a slider, and the upper ends of the body columns (28) on the same side of both ends are connected through an upper side beam (21), the middle part of the lower side beam (25) is opened and the lower end is installed with a motor mounting plate (24), the middle lower end of the upper side beam (21) is installed with a bearing seat (23) connected to the bearing seat cover (45) at the upper end of the screw rod (43), and the relative inner side wall of the body column (28) is provided with a slide rail base (12) corresponding to the slider mounting plate (323).

2. The auxiliary fixture for installing a commercial vehicle cab striker according to claim 1, characterized in that: The side bracket (32) comprises an upper side beam (322) and a lower side beam (326); the upper side beam (322) and the lower side beam (326) are connected via at least one side column (321); a ball nut mounting block (325) is embedded in the middle of the lower side beam (326); a slider mounting plate (323) is installed between both ends of the upper side beam (322) and the lower side beam (326); and at least two through holes (324) for positioning pins (6) to pass through are provided on one side of the upper side beam (322).

3. The auxiliary fixture for installing a commercial vehicle cab striker according to claim 1, characterized in that: Limit switches (29) are installed on the opposite inner side walls of the main body column (28) at the upper and lower sides of the slide rail base (12).

4. The auxiliary fixture for installing a commercial vehicle cab striker according to claim 1, characterized in that: Two limiting beams (27) are arranged between the lower longitudinal beams (20).

5. The auxiliary fixture for installing a commercial vehicle cab striker according to claim 1, characterized in that: The movable base (1) is rectangular, and universal rollers (11) are provided at the lower ends of both the front and rear sides thereof, and slide rail bases (12) are provided at both ends of the upper side of the movable base (1).

6. The auxiliary fixture for installing a commercial vehicle cab striker according to claim 1, characterized in that: The middle parts of the outer sides of the support beams (312) at both ends of the upper support frame (31) are connected to the side supports (32) via reinforcing beams (314).

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