CN210603931U

CN210603931U - Vehicle frame stress detection device

Info

Publication number: CN210603931U
Application number: CN201921712309.8U
Authority: CN
Inventors: 童宝祥; 庄清阳
Original assignee: Kunshan Xuyang Machinery Technology Co ltd
Current assignee: Kunshan Xuyang Machinery Technology Co ltd
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2020-05-22
Anticipated expiration: 2029-10-14

Abstract

The utility model discloses a frame atress detection device, include: workstation, fixed bolster, frame, control center, the control support includes front end support, middle support, rear end support, front end support and workstation adjustable connection, front end support upper end sets up first detection mechanism, sets up second detection mechanism in the middle of middle support and the rear end support, and rear end support department sets up third detection mechanism, first detection mechanism, second detection mechanism, third detection mechanism all set up pressure sensor and displacement sensor, pressure sensor and displacement sensor and control center electricity federation, first detection mechanism, second detection mechanism, third detection mechanism and control center electricity federation carry out complete detection to each stress point of whole frame through the setting of three detection mechanism groups, guarantee to the all-round safety inspection of frame.

Description

Vehicle frame stress detection device

Technical Field

The utility model mainly relates to a frame detection area, concretely relates to frame atress detection device.

Background

In the actual riding process of the bicycle, all positions of the frame can be subjected to forces of different degrees and different directions, so that the limit test of the stress condition of the frame before the finished frame leaves a factory is very important.

Chinese utility model patent, grant bulletin number: CN207300586U, application No.: CN201720971761.0, patent name, a perpendicular force testing machine of bicycle horizontal force provides a perpendicular force testing machine of bicycle horizontal force, including the organism, install in the frame of organism top, the frame colludes the claw including false front fork, seat pipe and back, the organism include the board, with false front fork articulated front axle fixed axle, with collude claw articulated rear axle fixed axle, set up in the horizontal impact hydro-cylinder of board one end, set up in the perpendicular impact hydro-cylinder of seat pipe top after the board. According to the size of the bicycle frame, a screw rod device is adjusted, the test force value and the test frequency required by the test are set on a computer, the maximum deformation of the allowable frame is adjusted, the machine can automatically stop the test after the maximum deformation is exceeded, after the test program is started, the horizontal impact oil cylinder and the vertical impact oil cylinder start to apply loads to the front fork and the seat tube, the test reaches the set frequency or the test piece is damaged, and the computer automatically stops the test and keeps the test result. The patent better solves the limit condition of horizontal force and vertical force borne by the bicycle, but still has shortcomings.

1. In the practical use process of the bicycle, the front end of the frame cannot be subjected to a horizontal force simply, the front end of the frame is subjected to a constantly changing vector force, the sizes of the horizontal force and the vertical force which are resolved by different directions of the vector force are different, and the application condition of the vector force in different directions to the front end of the frame cannot be solved.

2. In the time of in-service use, the atress situation of frame distributes on the branch of each frame, and current bicycle all can have an inclined bracing piece in the frame middle part, can't realize detecting the actual atress condition on the bracing piece in the middle of the frame in the above-mentioned patent.

3. The rear end of the frame is also applied with the acting force of the wheel when the wheel rotates at the position where the wheel is installed, and although the patent can detect the vertical force applied to the frame, the patent can not completely simulate the applied force condition of the fixed position of the wheel and the frame when in actual use.

In order to overcome the defects, the applicant provides a vehicle frame stress detection device which is used for solving the defects.

SUMMERY OF THE UTILITY MODEL

The utility model aims to perfectly simulate the stress situation of a bicycle in the actual use process, and detect the stress situation of the main stress situation points.

A vehicle frame stress detection device comprises: the automatic control device comprises a workbench, a fixed support, a frame and a control center, and is characterized in that the control support comprises a front end support, a middle support and a rear end support, the front end support is adjustably connected with the workbench, a first detection mechanism is arranged at the upper end of the front end support, the first detection mechanism is connected with the front end of the frame through a front end connecting piece, the middle support and the rear end support are detachably connected with the workbench, the upper part of the middle support is fixedly connected with the frame, a second detection mechanism is arranged between the middle support and the rear end support, the upper end of the second detection mechanism is connected with the middle support of the frame, the upper part of the rear end support is connected with a rear end thin rod of the frame, a third detection mechanism is arranged at the rear end support and connected with the rear end thin rod of the frame, the first detection mechanism, the second detection mechanism and the third detection mechanism are all provided with a pressure sensor and a displacement sensor, the pressure sensor and the displacement sensor are electrically connected with the control center, and the first detection mechanism, the second detection mechanism and the third detection mechanism are electrically connected with the control center.

Furthermore, a rotary table and a screw rod are arranged on the front end support, a threaded hole matched with the thread on the screw rod is formed in the front end support, one end of the screw rod is fixedly connected with the rotary table, the other end of the screw rod penetrates through the threaded hole of the front end support, a fixing plate is arranged close to the front end support, the screw rod penetrates through the fixing plate, and the screw rod is connected with the fixing plate through a bearing.

Further, first detection mechanism includes first headstock, fly leaf, scale zone, first headstock is fixed on the front end support, set up a slide rail on the fly leaf, set up a slider on the slide rail, first headstock is connected with the slider transmission, and the slider is connected with the front end connecting piece, the scale zone sets up on the front end support, scale zone inboard sets up the circular arc groove, and the fly leaf side is provided with regulating spindle, fixed axle, the regulating spindle card just can move along the circular arc groove at the circular arc inslot, fixed axle and front end support rotatable coupling.

Furthermore, the front end connecting piece comprises an inner plate and an outer plate, wherein an inner plate hole is formed in the inner plate, an outer plate groove matched with the inner plate hole is formed in the outer plate, the inner plate is connected with the sliding block, and the outer plate is connected with the frame.

Furthermore, the second detection mechanism comprises a second power box, a transmission rod, an intermediate connecting piece and an inclined rod, the second power box is fixed on the workbench and connected with the transmission rod, the transmission rod and the inclined rod are connected through the intermediate connecting piece, and the inclined rod is connected with the middle support of the frame.

Furthermore, the middle connecting piece is provided with an inclined through hole and a straight through hole, one end of the inclined rod is in supporting connection with the middle of the frame, the other end of the inclined rod penetrates through the inclined through hole, one end of the transmission rod is connected with the second power box, and the other end of the transmission rod is fixedly connected with the middle connecting piece through the straight through hole.

Further, the third detection mechanism comprises an oil cylinder, a rear end connecting piece and a connecting rod, the oil cylinder is fixed on the workbench through an oil cylinder fixing seat, a motor matched with the oil cylinder is further arranged on the oil cylinder fixing seat, the oil cylinder is connected with the rear end connecting piece through a push rod, one end of the connecting rod is rotatably connected with the rear end connecting piece, and the other end of the connecting rod is connected with a rear end thin rod of the frame.

Furthermore, connecting rod fixed connection transmission disc, can dismantle on the transmission disc and connect the one-level regulating block, the connection second grade regulating block can be dismantled to the one-level regulating block, second grade regulating block and frame rear end pin fixed connection.

Furthermore, the first-level regulating block is provided with connecting holes, the connecting holes are distributed on the whole first-level regulating block, and the first-level regulating block is detachably connected with the second-level regulating block through the connecting holes.

Preferably, the control center adopts a PLC programmable logic controller.

Has the advantages that: the utility model discloses a design first detection mechanism is used for measuring the detection frame front end atress condition; measuring and detecting the stress condition of the middle support of the frame through a second detection mechanism; the stress condition of the joint of the rear end thin rod of the frame and the wheel is measured through the third detection mechanism, the stress condition possibly encountered by the bicycle frame in the actual use process is completely simulated, and the service life of the frame and the limit data of stress can be more comprehensively known.

Drawings

Fig. 1 is an overall structure diagram of the present invention.

Fig. 2 is a side view of the entire apparatus of the present invention with the third motor removed.

Fig. 3 is a schematic structural diagram of the first detecting mechanism of the present invention.

Fig. 4 is the connection structure diagram of the frame and the first detection mechanism of the present invention.

Fig. 5 shows a connection structure diagram of the third detecting mechanism and the rear end of the frame.

Fig. 6 is a structure diagram of the intermediate connecting member of the present invention.

Wherein: 1. the device comprises a workbench 101, a fixing groove 2, a front end support 201, a turntable 202, a screw rod 203, a fixing plate 3, a middle support 4, a rear end support 5, a frame 501, a frame front end 502, a frame middle support 503, a frame rear end thin rod 6, a front end connecting piece 601, an outer plate 602, an inner plate 603, an outer plate groove 604, an inner plate hole 7, a first detection mechanism 701, a first power box 702, a movable plate 703, a sliding rail 704, a sliding block 705, a scale area 706, an arc groove 707, an adjusting shaft 708, a fixed shaft 8, a third detection mechanism 801, an oil cylinder 802, a motor 803, a push rod 804, a rear end connecting piece 805, a connecting rod 806, a transmission disc, a primary adjusting block 808, a secondary adjusting block 809, a connecting hole 9, a second detection mechanism 901, a second power box 902, a transmission rod 903, a middle connecting, A diagonal rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1 to 6, a vehicle frame stress detection device includes: workstation 1, fixed bolster, frame 5, control center. The workbench 1 is provided with a fixing groove 101 penetrating through a workbench working plane and used for ensuring that the fixing supports are on the same straight line. The control bracket comprises a front end bracket 2, a middle bracket 3 and a rear end bracket 4, the front end bracket 2 is adjustably connected with the workbench 1, a turntable 201 and a screw rod 202 are arranged on the front end bracket 2, a threaded hole matched with a thread on the screw rod 202 is formed in the front end bracket 2, one end of the screw rod 202 is fixedly connected with the turntable 201, the other end of the screw rod 202 penetrates through the threaded hole of the front end bracket 2, a fixing plate 203 is arranged at a position close to the front end bracket 2, the screw rod 202 penetrates through the fixing plate 203, and the screw rod 202 is connected with the fixing plate 203 through a bearing. The effect is, can drive lead screw 202 through rotary turntable 201 and move in front end support 2, because fixed plate 203 and workstation 1 fixed connection, consequently lead screw 202 can not be by in the precession front end support 2, can drive front end support 2 and move on workstation 1 when rotary turntable 201, and it is fixed to use the bolt after moving suitable position, realizes the position control to front end support 2. The upper end of the front end support 2 is provided with a first detection mechanism 7, the first detection mechanism 7 is connected with the front end 2 of the frame through a front end connecting piece 6, the first detection mechanism 7 comprises a first power box 701, a movable plate 702 and a scale area 705, the first power box 701 is fixed on the front end support 2, the movable plate 702 is provided with a sliding rail 703, the sliding rail 703 is provided with a sliding block 704, the first power box 701 is in transmission connection with the sliding block 704, the sliding block 704 is connected with the front end connecting piece 6, the scale area 705 is arranged on the front end support 2, the inner side of the scale area 705 is provided with an arc groove 706, the side edge of the movable plate 702 is provided with an adjusting shaft 707 and a fixed shaft 708, the adjusting shaft 707 is clamped in the arc groove 706 and can move along the arc groove 706, and the fixed shaft 708 is rotatably connected with the front end support 2. The structure of the adjusting shaft 708 is a shaft with one end fixedly connected to the movable plate, the other end of the shaft is provided with an external thread, and one end of the shaft provided with the external thread is provided with a fastening bolt, so that the movable plate 702 can rotate around the fixed shaft 708, and when the movable plate 702 rotates to a proper position, the movable plate 702 can be fixed at any position within a range defined by the arc groove 706 by screwing the fastening bolt, thereby realizing the angle adjustment of the movable plate 702. The front end connecting piece 6 comprises an inner plate 602 and an outer plate 601, wherein the inner plate 602 is provided with an inner plate hole 604, the outer plate 601 is provided with an outer plate groove 603 matched with the inner plate hole 604, and the length of the front end connecting piece 6 can be adjusted by fixing the inner plate hole 604 and the outer plate groove 603 at different positions. The inner plate 602 is rotatably connected to the slider 704, and the outer plate 601 is connected to the frame 5. Middle support 3, rear end support 4 can dismantle with workstation 1 and be connected, middle support 3, rear end support 4 can realize being connected with dismantling of workstation 1 through the bolt. The upper part of the middle bracket 3 is fixedly connected with the frame 5, and a second detection mechanism 9 is arranged between the middle bracket 3 and the rear end bracket 4. The second detection mechanism 9 comprises a second power box 901, a transmission rod 902, an intermediate connecting piece 903 and a diagonal rod 904, the second power box 903 is fixed on the workbench 1, the second power box 903 is in transmission connection with the transmission rod 902, the transmission rod 902 is connected with the diagonal rod 904 through the intermediate connecting piece 903, and the diagonal rod 904 is connected with the middle frame support 502. The middle connecting piece 903 is provided with an inclined through hole 9032 and a straight through hole 9031, one end of the inclined rod 904 is connected with the middle frame support 502, the other end of the inclined rod 904 penetrates through the inclined through hole 9032, the inclined rod 904 can move in the inclined through hole 9032, one end of the transmission rod 902 is connected with the second power box 901, the other end of the transmission rod 902 is fixedly connected with the middle connecting piece 903 through the straight through hole 9031, and the upper end of the second detection mechanism 9 is connected with the middle frame support 502. Rear end support 4 top is connected with frame rear end pin 503, and rear end support 4 department sets up third detection mechanism 8, third detection mechanism 8 includes hydro-cylinder 801, rear end connecting piece 804, connecting rod 805, and hydro-cylinder 801 passes through hydro-cylinder fixing base 10 to be fixed on workstation 1, still sets up on the hydro-cylinder fixing base 10 with hydro-cylinder 801 assorted motor 802, hydro-cylinder 801 passes through push rod 803 and connects rear end connecting piece 804, connecting rod 805 one end is rotated with rear end connecting piece 804 and is connected, and connecting rod 805 other end fixed connection drive disc 806, set up a plurality of apertures on the connecting rod 805, adjust suitable aperture according to the actual size of different motorcycle types and be connected with rear end connecting piece 804, realize the regulation to the length of connecting rod 805. Can dismantle on the transmission disc 806 and connect one-level regulating block 807, one-level regulating block 807 can dismantle and connect second grade regulating block 808, second grade regulating block 808 and frame rear end pin 503 fixed connection, set up connecting hole 809 on the one-level regulating block 807, connecting hole 809 distributes on whole one-level regulating block 807, one-level regulating block 807 can dismantle with second grade regulating block 808 through connecting hole 809 and be connected. The first detection mechanism 7, the second detection mechanism 9 and the third detection mechanism 8 are all provided with a pressure sensor and a displacement sensor, and the pressure sensor and the displacement sensor are electrically connected with a control center. Specifically, a pressure sensor and a displacement sensor are arranged at three positions, the first position is the joint of the front end connecting piece 6 and the frame 5, the second position is the joint of the inclined rod 904 and the frame 5, the third position is the joint of the secondary adjusting block 808 and the frame 5, and the pressure sensors and the displacement sensors at the three positions are arranged at the corresponding positions of the frame 5, so as to detect the stress condition of the monitoring point corresponding to the frame in the test process and the displacement condition under the stress condition, namely the deformation quantity under the stress condition.

It should be noted that, the first power box 7 and the second power box 9 are both provided with oil cylinders identical to the oil cylinder 801 and corresponding matching motors, the first power box 7 is connected with the sliding block 704 through a push rod on the inner oil cylinder, and the second power box is connected with the transmission rod 902 through the inner oil cylinder. The first detection mechanism 7, the second detection mechanism 9 and the third detection mechanism 8 are electrically connected with the control center.

The specific working principle is as follows: when the stress detection device is used, the force and the times required by detecting the corresponding position of the frame 5 and the numerical value of the deformation quantity which can be borne are firstly set through the control center, and then the stress detection device of the frame works. The pressure sensor and the displacement sensor at the corresponding positions of the frame 5 detect data in real time and transmit the data to the control center, the control center monitors the data conditions of the pressure sensor and the displacement sensor in real time, when the force or the frequency of the force applied to the corresponding positions of the frame 5 reaches an expected value and the displacement of the corresponding positions of the frame 5 does not exceed the preset value, the frame stress detection device stops detecting, and the frame 5 meets the production standard. Or although the force or the frequency of the force applied to the corresponding position of the frame 5 does not reach the expected value, but the displacement of the corresponding position of the frame 5 exceeds the preset value, the frame force detection device stops detecting, and the force condition of the frame 5 does not meet the standard. When the force or the frequency of the corresponding position of the frame 5 reaches an expected value and the displacement of the corresponding position of the frame 5 reaches or exceeds a preset value, the frame stress detection device stops detecting, and the frame 5 does not accord with the production standard.

When the vehicle frame 5 with different models and sizes is detected, the size can be adjusted by adjusting the position of the front end bracket 2, adjusting the thicknesses of the first-stage adjusting plate 807 and the second-stage adjusting plate 808 and adjusting the positions of the connecting rod 805 and the rear end connecting piece 804. When the frame 5 with the same model size is tested in stress conditions at different angles, the detection of different stress conditions at the front end of the frame 5 can be realized by adjusting the angle of the movable plate 702.

To sum up, the utility model discloses reach anticipated purpose.

Claims

1. A vehicle frame stress detection device comprises: the device comprises a workbench, a fixed support, a frame and a control center, and is characterized in that the fixed support comprises a front end support, a middle support and a rear end support, the front end support is adjustably connected with the workbench, a first detection mechanism is arranged at the upper end of the front end support, the first detection mechanism is connected with the front end of the frame through a front end connecting piece, the middle support and the rear end support are detachably connected with the workbench, the upper part of the middle support is fixedly connected with the frame, a second detection mechanism is arranged between the middle support and the rear end support, the upper end of the second detection mechanism is connected with the middle support of the frame, the upper part of the rear end support is connected with a rear end thin rod of the frame, a third detection mechanism is arranged at the rear end support and connected with the rear end thin rod of the frame, the first detection mechanism, the second detection mechanism and the third detection mechanism are all provided with a pressure sensor and a displacement sensor, the pressure sensor and the displacement sensor are electrically connected with the control center, and the first detection mechanism, the second detection mechanism and the third detection mechanism are electrically connected with the control center.

2. The apparatus as claimed in claim 1, wherein the front bracket is provided with a rotary plate and a screw rod, the front bracket is provided with a threaded hole matching with the thread on the screw rod, one end of the screw rod is fixedly connected with the rotary plate, the other end of the screw rod passes through the threaded hole of the front bracket, a fixing plate is arranged near the front bracket, the screw rod passes through the fixing plate, and the screw rod is connected with the fixing plate by a bearing.

3. The vehicle frame stress detection device according to claim 2, wherein the first detection mechanism comprises a first power box, a movable plate and a scale area, the first power box is fixed on the front end bracket, a slide rail is arranged on the movable plate, a slide block is arranged on the slide rail, the first power box is in transmission connection with the slide block, the slide block is connected with the front end connecting piece, the scale area is arranged on the front end bracket, an arc groove is arranged on the inner side of the scale area, an adjusting shaft and a fixed shaft are arranged on the side edge of the movable plate, the adjusting shaft is clamped in the arc groove and can move along the arc groove, and the fixed shaft is rotatably connected with the front end bracket.

4. The frame stress detection device of claim 3, wherein the front end connection member comprises an inner plate and an outer plate, the inner plate is provided with an inner plate hole, the outer plate is provided with an outer plate groove matched with the inner plate hole, the inner plate is connected with the sliding block, and the outer plate is connected with the frame.

5. The vehicle frame stress detection device as claimed in claim 1, wherein the second detection mechanism comprises a second power box, a transmission rod, an intermediate connection member and a diagonal rod, the second power box is fixed on the workbench and connected with the transmission rod, the transmission rod and the diagonal rod are connected through the intermediate connection member, and the diagonal rod is connected with the middle support of the vehicle frame.

6. The apparatus for testing frame stress according to claim 5, wherein the middle connection member has a through hole and a through hole, one end of the diagonal rod is connected to the middle support of the frame, the other end of the diagonal rod passes through the through hole, one end of the transmission rod is connected to the second power box, and the other end of the transmission rod is fixedly connected to the middle connection member through the through hole.

7. The vehicle frame stress detection device according to claim 1, wherein the third detection mechanism comprises an oil cylinder, a rear end connecting piece and a connecting rod, the oil cylinder is fixed on the workbench through an oil cylinder fixing seat, a motor matched with the oil cylinder is further arranged on the oil cylinder fixing seat, the oil cylinder is connected with the rear end connecting piece through a push rod, one end of the connecting rod is rotatably connected with the rear end connecting piece, and the other end of the connecting rod is connected with a rear end thin rod of the vehicle frame.

8. The apparatus as claimed in claim 7, wherein the connecting rod is fixedly connected to a transmission disc, the transmission disc is detachably connected to a first-stage adjusting block, the first-stage adjusting block is detachably connected to a second-stage adjusting block, and the second-stage adjusting block is fixedly connected to the rear end pin of the frame.

9. The apparatus for testing frame stress of claim 8, wherein the first-stage adjustment block has connection holes distributed therein, and the first-stage adjustment block is detachably connected to the second-stage adjustment block through the connection holes.