CN112113763A - Automobile exhaust pipe valve opening and closing force testing and spring torsion detecting device - Google Patents
Automobile exhaust pipe valve opening and closing force testing and spring torsion detecting device Download PDFInfo
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- CN112113763A CN112113763A CN202011048948.6A CN202011048948A CN112113763A CN 112113763 A CN112113763 A CN 112113763A CN 202011048948 A CN202011048948 A CN 202011048948A CN 112113763 A CN112113763 A CN 112113763A
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses a device for testing opening and closing force of an automobile exhaust pipe valve and detecting spring torsion, which comprises a pressure testing tool and a spring torsion detecting tool; the pressure testing tool comprises a first rack, wherein a first driving motor and a linear driving mechanism are connected to the first rack; a first fixing mechanism; the pressure sensor can sense the force values of the valve core when the valve core is opened at different angles; the control box is used for collecting force values of the pressure sensor when the pressure sensor senses that the valve core is opened at different angles, testing the opening and closing force of the valve core, and controlling the spring torsion detection tool to act and correcting the spring torsion when the opening and closing force of the valve core does not meet the technical requirements. The opening and closing force testing and spring torsion detecting device for the automobile exhaust pipe valve can accurately test the opening and closing force of the valve, can feed the opening and closing force information of the valve back to the spring torsion detecting device, adjusts the magnitude of the spring torsion in real time, and improves the qualification rate of finished products of the valve.
Description
Technical Field
The invention relates to the technical field of automobile parts, in particular to a device for testing opening and closing force of an automobile exhaust pipe valve and detecting spring torsion.
Background
The exhaust pipe of the automobile is a part of an engine exhaust system, the exhaust system mainly comprises an exhaust manifold, an exhaust pipe valve and a silencer, a three-way catalyst for controlling the emission of pollutants of the engine is also installed in the exhaust system, the exhaust pipe valve is an essential auxiliary element in an exhaust pipeline system, and the exhaust pipe valve is widely applied to the highest point or an elbow or a place with closed air on a pipeline to discharge the air in the pipe to dredge the pipeline, so that the pressure in the exhaust pipe of the valve can be effectively kept within the range of technical requirements all the time, and the aim of normal exhaust work is fulfilled; the working efficiency of the engine is improved, the fuel consumption, the environmental pollution and the noise are reduced, and the effects of energy conservation and emission reduction are achieved.
The automobile exhaust pipe valve in the prior art, like the patent application with publication number CN207829979U, name exhaust pipe valve structure, its structure is including installing the mount pad of air inlet or gas outlet department in automobile exhaust pipe exhaust cold end noise elimination package, is equipped with the opening on this mount pad, and swivelling joint has the case that can close or open the opening on the mount pad, is provided with the spring that can make case automatic re-setting in the pivot of this case. When the engine runs at low speed, the whole valve is in a closed state, waste gas is discharged from the hole pipe or the discharge pipe, the pressure is lower at the moment, and the valve core of the valve is in a closed pressure maintaining state under the elastic force of the spring; when the engine runs at high speed, one side of the valve core is pressed and increased, so that the valve core is opened by overcoming the elasticity of the spring, waste gas is discharged from the valve and the hole pipe or the discharge pipe, and the valve has a pressure relief effect at the moment when the pressure is higher; the valve can keep the pressure in the exhaust pipe in one state all the time; when the exhaust pressure is reduced, the elasticity of the torsion spring drives the valve core to rotate to close the valve. Therefore, whether the valve can work normally or not, the spring plays a crucial role, if the torsion of the spring is too small, the valve core is easy to open, the pressure in the automobile exhaust pipe is lower than a set pressure value, and the noise is large when the automobile runs at low speed; if the torsion setting of spring is too big, then the case is difficult to be opened, leads to vehicle vent-pipe internal pressure to be higher than the pressure value of settlement far away, and the blast pipe exhaust is not smooth and easy, then influences the life and the engine work efficiency of engine.
The automobile exhaust pipe valve spring needs torsion detection during assembly and needs to test the opening and closing force of the valve core after the spring is assembled, so that the assembled spring meets the requirement of the opening and closing force of the valve. At present, a full-automatic torsion spring tester is generally adopted to detect the relation between the rotating angle and the torsion force during the assembly of the spring, so that when the spring is assembled on a valve, the required assembly angle is judged by using a test result value. Although the method is feasible, the rigidity of each spring is different, and assembly errors also exist during assembly of the springs, so that the force value of the valve assembly cannot be guaranteed, the whole process is multiple, the efficiency is low, and the qualified rate of the finished valve products is low. The valve core opening and closing force test is manually carried out by using a pressure sensor, when an unqualified valve is tested, the valve can only be sealed and stored as a unqualified product, and the opening and closing force test result of the valve core cannot be fed back to the torsion detection and assembly station of the spring in real time, so that the torsion of the spring cannot be corrected in time, the qualified rate of the valve finished product is low, and the error of the opening and closing force of the manually tested valve is large.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art, and provide the automobile exhaust pipe valve opening and closing force testing and spring torsion detecting device which can accurately test the opening and closing force of the valve, feed the opening and closing force information of the valve back to the spring torsion detecting device, adjust the magnitude of the spring torsion in real time and improve the qualification rate of finished products of the valve
The technical scheme of the invention is to provide an automobile exhaust pipe valve opening and closing force testing and spring torsion detecting device with the following structure: the device comprises a pressure testing tool and a spring torsion detecting tool;
the pressure test tool comprises
The first frame is connected with a first driving motor and a linear driving mechanism, and the first driving motor is in transmission connection with the linear driving mechanism and is used for driving the linear driving mechanism to stretch and retract;
the first fixing mechanism is arranged at the bottom of the first rack and used for fixing a valve assembly to be tested;
the pressure sensor is provided with a pressure rod which is arranged downwards and the lower end of the pressure rod is abutted to a valve core of the valve assembly to be tested, the pressure sensor is connected with the linear driving mechanism and synchronously extends and retracts along with the linear driving mechanism, the pressure sensor is used for enabling the pressure rod to drive the valve core to open different angles, and the pressure sensor can sense force values when the valve core is opened at different angles;
the spring torsion detecting tool comprises
The second frame is connected with a second driving motor;
the second fixing mechanism is arranged at the bottom of the second rack and used for fixing the valve assembly to be detected;
the spring cover fixing seat is connected to the lower end of the rotating shaft of the second driving motor and synchronously rotates along with the rotating shaft of the second driving motor; the spring cover fixing seat is provided with a bayonet through which the upper end of a fixing column provided with a spring on the valve assembly passes, and a working space which can enable the spring cover to be assembled at the upper end of the fixing column and enables the spring cover to be connected with the upper end of the spring is arranged above the bayonet;
the pressing mechanism is connected to the spring cover fixing seat and provided with a pressing block arranged in the working space, the pressing block is used for downwards pressing the spring cover and the spring which are arranged above the bayonet and assembled on the fixing column, and the pressing block is used for enabling the upper ends of the spring cover and the spring to synchronously rotate when the spring cover fixing seat rotates;
the torsion sensor is used for detecting the torsion of the spring when the rotating shaft of the second driving motor rotates;
the control box is electrically connected with the pressure sensor, the torque sensor and the second driving motor and used for collecting force values of the pressure sensor when the pressure sensor senses that the valve core is opened at different angles, testing the opening and closing force of the valve core, and when the opening and closing force of the valve core does not meet the technical requirements, controlling the second driving motor to act by the control box, adjusting the rotating angle of the spring cover fixing seat and correcting the torque of the spring.
Preferably, the linear driving mechanism comprises a sliding table connected to the first frame, a sliding seat is in sliding fit in the height direction of the sliding table, a threaded hole is formed in the sliding seat, a lead screw is in threaded connection with the threaded hole, and the lead screw is in transmission connection with a rotating shaft of the first driving motor; the pressure sensor is connected to the sliding seat.
Preferably, the first fixing mechanism comprises a support for placing the valve assembly to be tested and two pressing cylinders for pressing the valve assembly to be tested.
Preferably, both sides of the upper end of the bayonet are provided with limiting steps for supporting the lower end of the spring cover when the pressing block presses the spring cover downwards.
Preferably, the pressing mechanism comprises a vertically arranged pressing air cylinder and a sliding block which is in sliding fit with the spring cover fixing seat, the lower end of a piston rod of the pressing air cylinder is connected with the sliding block, and the pressing block is connected to the sliding block and moves synchronously with the sliding block.
Preferably, the pressing block is provided with a pressing part which is matched and pressed with the upper end face of the bayonet, the pressing part is provided with a notch matched with the width of the bayonet, the upper end of the spring cover can be exposed through the notch, two pressing arc surfaces capable of pressing the spring cover downwards are arranged on two sides of the bottom of the notch, and the two pressing arc surfaces are symmetrically arranged and the distance between the upper ends is smaller than that between the lower ends.
Preferably, one side of the spring cover fixing seat, which is close to the working space, is provided with a first inclined surface which extends into the working space and inclines from top to bottom; the outer side wall of the pressing block is provided with a second inclined surface matched and attached with the first inclined surface, when the pressing block moves downwards to the second inclined surface to be attached with the first inclined surface, a gap is arranged between the bottom of the pressing part and the upper end of the bayonet of the spring cover fixing seat, and the pressing part compresses the spring cover on the upper end of the fixing column.
Preferably, the second fixing mechanism comprises a positioning seat, a supporting block and a fixing cylinder, the positioning seat is connected to the bottom of the second frame, a positioning groove for accommodating the valve assembly to be detected is formed in the positioning seat, the supporting block is rotatably connected with a locking rod, the free end of a piston rod of the fixing cylinder is hinged to the first end of the locking rod, the second end of the locking rod extends towards the positioning groove, and when the piston rod of the fixing cylinder pushes the locking rod outwards to rotate, the second end of the locking rod can be pressed against the valve assembly to be detected, which is arranged in the positioning groove.
Preferably, the second frame is rotatably connected with a transmission polished rod coaxial with the rotating shaft of the second driving motor, the upper end of the transmission polished rod is connected with the rotating shaft of the second driving motor through a coupler and a speed reducer, and the lower end of the transmission polished rod is connected with the spring cover fixing seat.
Preferably, the first rack is sequentially provided with a lower travel switch and an upper travel switch from bottom to top, the lower travel switch and the upper travel switch are both electrically connected with a control circuit of the first driving motor, and the sliding seat is provided with a contact block matched with the lower travel switch and the upper travel switch.
After the structure is adopted, compared with the prior art, the device for testing the opening and closing force of the exhaust pipe valve and detecting the spring torsion has the following advantages: when the tool for testing the opening and closing force of the exhaust pipe valve and detecting the spring torsion of the device for detecting the spring torsion of the automobile exhaust pipe valve is used, a valve assembly to be detected is placed in a positioning groove of a positioning seat at the bottom of a second frame, then a fixing cylinder of a second fixing mechanism drives a locking rod to rotate, so that the locking rod presses the valve assembly to be detected, at the moment, the upper end of a fixing column, provided with a spring, on the valve assembly penetrates through a bayonet of a spring cover fixing seat, a worker pre-assembles the spring cover at the upper end of the fixing column in a working space above the bayonet, and the spring cover is clamped with a clamping foot at the upper end of; then a pressing block of the pressing mechanism presses the spring cover and the spring downwards; the second driving motor operates to drive the spring cover fixing seat and the pressing mechanism to rotate, so that the spring cover and a clamping pin at the upper end of the spring rotate together, the torsion sensor detects torsion applied to a rotating shaft of the second driving motor by the spring in real time, transmits a torsion change signal to the control box, and the control box controls the second driving motor to operate or stop operating; when the control box detects that the torsion of the spring is within a set range, the second driving motor is controlled to stop running, at the moment, a worker welds the spring cover and the upper end of the fixing column through a welding gun, and therefore automatic detection and assembly of the torsion of the valve spring of the automobile exhaust pipe are completed. The pressure testing tool of the automobile exhaust pipe valve opening and closing force testing and spring torsion detecting device drives the linear driving mechanism to move through the first driving motor, so that the pressure rod of the pressure sensor can drive the valve core to open different angles, the pressure sensor transmits a force value when the valve core is opened at different angles to the control box, the control box judges whether the opening and closing force of the valve core meets requirements or not, if the opening and closing force of the valve core does not meet the technical requirements, the control box gives an alarm, and feeds the force value of the opening and closing force of the valve core back to the spring torsion detecting tool, the control box can control the second driving motor to move, the rotating angle of the spring cover fixing seat is adjusted, the size of the spring torsion is corrected, and an unqualified valve assembly is avoided. Therefore, the opening and closing force testing and spring torsion detecting device for the automobile exhaust pipe valve can detect the torsion of the spring in the spring assembling process, adjust the torsion of the spring to a preset range, then complete the assembly of the spring, ensure the opening force value of the valve assembly, improve the qualification rate of the finished valve product and greatly improve the assembling efficiency; and can test the power of opening and shutting of case according to the pressure test frock to give the real-time feedback of test data to spring torsion detection frock, with the size of real-time regulation spring torsion, also when detecting that the power of opening and shutting of case does not satisfy technical requirement, the action of steerable second driving motor of this control box, the turned angle of regulation spring lid fixing base revises the size of spring torsion. Secondly, the structure setting of the linear driving mechanism of the pressure testing tool enables the telescopic motion of the pressure rod to be more stable, the opening and closing force testing of the valve core to be more accurate, the force values of the valve core opening and closing at different angles can be transmitted to the control box in real time, and the control box can accurately judge the opening and closing force of the valve core. In addition, the limiting steps on the two sides of the upper end of the bayonet are arranged, so that the spring can be prevented from being crushed or deformed, the limiting effect on the installation position of the spring cover is achieved, the synchronous rotation of the spring cover and the spring cover fixing seat can be ensured, and the torsion detection of the spring is more accurate; in addition, the notch of the pressing part on the pressing block and the arrangement of the notch bottom pressing inclined plane or the cambered surface enable the spring cover to be pressed more firmly, so that the spring cover is prevented from shifting or deviating in the rotating process, and the finished product qualification rate of products is guaranteed. Furthermore, the cooperation setting on the second inclined plane on first inclined plane and the briquetting lateral wall on the spring lid fixing base makes the briquetting move down when second inclined plane and first inclined plane laminating, the bottom of crimping portion and the upper end of the bayonet socket of spring lid fixing base have the clearance before, crimping portion compresses tightly the spring lid of fixed column upper end this moment, also be the setting in this clearance, the in-process of further having guaranteed to push down at the briquetting avoids crushing the spring or makes the spring warp, and make the spring lid compress tightly more stable.
Drawings
FIG. 1 is a schematic structural diagram of an opening and closing force testing and spring torsion detecting device for an exhaust pipe valve of an automobile according to the present invention.
Fig. 2 is a schematic structural diagram of a pressure testing tool of the automobile exhaust pipe valve opening and closing force testing and spring torsion detecting device.
Fig. 3 is a schematic structural diagram of a spring torsion detection tool of the automobile exhaust pipe valve opening and closing force testing and spring torsion detection device of the invention.
Fig. 4 is another angle structure diagram of the spring torsion detecting tool of the automobile exhaust pipe valve opening and closing force testing and spring torsion detecting device of the invention.
Fig. 5 is a schematic structural diagram of a spring cover fixing seat of the automobile exhaust pipe valve opening and closing force testing and spring torsion detecting device of the invention.
Fig. 6 is a schematic structural diagram of a second fixing mechanism of the device for testing the opening and closing force of the exhaust pipe valve and detecting the spring torsion of the automobile according to the invention.
As shown in the figure:
1. a second machine frame, 100, a support frame, 101, a base, 2, a second driving motor, 200, a reducer, 201, a coupler, 202, a transmission polished rod, 3, a spring cover fixing seat, 300, a bayonet, 301, a limit step, 302, a guide hole, 303, a working space, 304, a first inclined plane, 4, a pressing cylinder, 400, a pressing block, 401, a sliding block, 402, a notch, 403, a pressing arc surface, 404, a second inclined plane, 405, a gap, 406, a pressing part, 5, a second fixing mechanism, 500, a positioning seat, 501, a supporting block, 502, a locking rod, 503, a fixing cylinder, 504, a positioning groove, 6, a torsion sensor, 7, a valve assembly, 700, a spring, 701, a spring cover, 702, a valve core, 8, a spring torsion detection tool, 9, a pressure test tool, 900, a first machine frame, 901, a first driving motor, 902, a sliding table, 903, a sliding seat, 904 and a threaded hole, 905. the device comprises a lead screw, 906, a bottom plate, 10, a control box, 11, a pressure sensor, 1100, a pressure rod, 12, a first fixing mechanism, 1200, a support, 1201 and a pressing cylinder.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
As shown in fig. 1 to 6;
the invention relates to a device for testing opening and closing force of an automobile exhaust pipe valve and detecting the torsion of a spring, which is used for detecting the torsion of the spring in the process of assembling a valve core spring of the automobile exhaust pipe valve and adjusting the torsion of the spring to be within a set torsion range so as to ensure the opening force value of the valve and improve the qualification rate of a finished product of the valve; and testing the opening and closing force of the valve core of the valve assembly provided with the spring. The automobile exhaust pipe valve opening and closing force testing and spring torsion detecting device comprises a pressure testing tool and a spring torsion detecting tool; the spring torsion detection tool comprises a second rack 1, and a second driving motor 2 is connected to the second rack 1; the output end of the rotating shaft of the second driving motor 2 is connected with a speed reducer 200, a transmission polished rod 202 coaxial with the rotating shaft of the second driving motor 2 is arranged below the speed reducer 200, the upper end of the transmission polished rod 202 is connected with the speed reducer 200 below the rotating shaft of the second driving motor 2 through a coupler 201, the lower end of the transmission polished rod 202 is connected with a spring cover fixing seat 3, and the transmission polished rod 202 is rotatably connected on a supporting frame 100 positioned on the second rack 1. When the second driving motor 2 acts, the spring cover fixing seat 3 can be driven to rotate. The automatic detection and assembly device for the torsion of the valve spring of the automobile exhaust pipe further comprises a torsion sensor 6 for detecting the torsion of the spring when the rotating shaft of the second driving motor 2 rotates, and the torsion sensor 6 is connected to the second rack 1 and connected with the rotating shaft of the second driving motor 2. And the control box 10 is electrically connected with the second driving motor 2, the pressing mechanism and the torsion sensor 6, and is used for receiving the spring torsion signal transmitted by the torsion sensor 6 and controlling the second driving motor 2 to act. The control box is also called as a controller or a computer and can receive the spring torsion signals transmitted by the torsion sensor, display the torsion change curve of the spring and control the rotation of the rotating shaft of the second driving motor in real time.
The bottom of the second rack 1 is provided with a base 101, the base 101 is connected with a second fixing mechanism 5 which is arranged at the bottom of the second rack 1, and the second fixing mechanism 5 is used for fixing a valve assembly 7 to be detected; the second fixing mechanism 5 includes a positioning seat 500, a supporting block 501 and a fixing cylinder 503 connected to the bottom of the second frame 1, the positioning seat 500 is provided with a positioning groove 504 for placing the valve assembly 7 to be detected, the supporting block 501 is rotatably connected with a locking rod 502, the free end of the piston rod of the fixing cylinder 503 is hinged to the first end of the locking rod 502, the second end of the locking rod 502 extends towards the positioning groove 504, and when the piston rod of the fixing cylinder 503 pushes the locking rod 502 outwards to rotate, the second end of the locking rod 502 can be pressed against the valve assembly 7 to be detected placed in the positioning groove 504.
The automatic detection and assembly device for the valve spring torsion of the automobile exhaust pipe further comprises a spring cover fixing seat 3 which is connected to the lower end of a rotating shaft of the second driving motor 2 and synchronously rotates along with the rotating shaft of the second driving motor 2; the spring cover fixing seat 3 is provided with a bayonet 300 for the upper end of a fixing column provided with a spring 700 on the valve assembly 7 to pass through, and a working space 303 which can enable the spring cover 701 to be assembled at the upper end of the fixing column and enables the spring cover 701 to be connected with the upper end of the spring 700 is arranged above the bayonet 300; and the pressing mechanism is connected to the spring cover fixing seat 3 and is provided with a pressing block 400 arranged in the working space 303, the pressing block 400 is used for downwards pressing the spring cover 701 and the spring 700 which are arranged on the fixing column and positioned above the bayonet 300, and the pressing mechanism is used for enabling the upper ends of the spring cover 701 and the spring 700 to synchronously rotate when the spring cover fixing seat 3 rotates. When the automatic torsion detecting and assembling device for the valve spring of the automobile exhaust pipe is used, a valve assembly 7 to be detected is placed in a positioning groove 504 of a positioning seat 500 at the bottom of a second frame 1, then a fixing cylinder 503 of a second fixing mechanism 5 drives a locking rod 502 to rotate, so that the locking rod 502 presses the valve assembly 7 to be detected, at the moment, the upper end of a fixing column, provided with a spring 700, on the valve assembly 7 penetrates through a bayonet 300 of a spring cover fixing seat 3, a worker pre-assembles a spring cover 701 at the upper end of the fixing column in a working space 303 above the bayonet 300, and the spring cover 701 is clamped with a clamping foot at the upper end of the spring 700; then, a pressing block 400 of the pressing mechanism presses the spring cover 701 and the spring 700 downwards; the control box controls the second driving motor 2 to operate, drives the spring cover fixing seat 3 and the pressing mechanism to rotate, so that the spring cover 701 drives the clamping pin at the upper end of the spring 700 to rotate together, the torsion sensor 6 detects the torsion applied to the rotating shaft of the second driving motor by the spring in real time, transmits a torsion change signal to the control box, and controls the second driving motor to operate or stop operating by the control box; when the control box detects that the torsion of the spring is within a set range, the second driving motor is controlled to stop running, at the moment, a worker welds the spring cover and the upper end of the fixing column through a welding gun, and therefore automatic detection and assembly of the torsion of the valve spring of the automobile exhaust pipe are completed. This automobile exhaust pipe valve spring torsion automated inspection and assembly quality can detect the torsion of spring at the spring assembling in-process to adjust the torsion of spring to the predetermined within range, then accomplish the assembly of spring, the power value that its valve assembly opened obtains guaranteeing, improves the valve finished product qualification rate, and assembly efficiency improves greatly.
Referring to fig. 1 and fig. 2 again, the pressure testing tool 9 includes a first frame 900, on which a first driving motor 901 and a linear driving mechanism are connected, the first driving motor 901 is in transmission connection with the linear driving mechanism for driving the linear driving mechanism to extend and retract; the first fixing mechanism 12 is arranged on the bottom plate 906 at the bottom of the first rack 900 and used for fixing the valve assembly 9 to be tested; the pressure sensor 11 is provided with a pressure rod 1100 which is arranged downwards and the lower end of the pressure rod 1100 is abutted against the valve core 702 of the valve assembly 7 to be tested, the pressure sensor 11 is connected with the linear driving mechanism and synchronously extends and retracts along with the linear driving mechanism, the pressure rod 1100 is used for driving the valve core 702 to open at different angles, and the pressure sensor 11 can sense the force values of the valve core 702 when the valve core 702 is opened at different angles; the control box 10 is electrically connected with the pressure sensor 11, the torsion sensor 6 and the second driving motor 2 and used for collecting force values of the pressure sensor 11 when the pressure sensor senses that the valve core 702 is opened at different angles and testing the opening and closing force of the valve core 702, and when the opening and closing force of the valve core 702 does not meet the technical requirements, the control box 10 can control the second driving motor 2 to act, adjust the rotation angle of the spring cover fixing seat 3 and correct the torsion of the spring.
The pressure testing tool 9 drives the linear driving mechanism to act through the first driving motor 901, so that the pressure rod 1100 of the pressure sensor 11 can drive the valve core 702 to open different angles, that is, the first driving motor 901 drives the sliding seat 903 to move in the length direction of the lead screw 905, so that the pressure rod 1100 moves five position points downwards at intervals, each position point corresponds to a valve core opening force value, the pressure sensor 11 transmits the force values when sensing the valve core to open different angles to the control box 10, the control box 10 automatically produces a pressure curve and compares the pressure curve with a preset pressure curve, the control box 10 judges whether the opening and closing force of the valve core 702 meets the requirements, if the opening and closing force of the valve core 702 does not meet the technical requirements, the control box 10 gives an alarm and feeds back the force value of the torsional opening and closing force of the valve core 702 to the spring detecting tool 8, and the control box 10 can control, the rotation angle of the spring cover fixing seat 3 is adjusted, and the size of the torsion of the spring is corrected, so that an undesirable valve assembly is avoided. Therefore, the opening and closing force testing and spring torsion detecting device for the automobile exhaust pipe valve can detect the torsion of the spring in the spring assembling process, adjust the torsion of the spring to a preset range, then complete the assembly of the spring, ensure the opening force value of the valve assembly, improve the qualification rate of the finished valve product and greatly improve the assembling efficiency; and can test the power of opening and shutting of case according to the pressure test frock to give the real-time feedback of test data to spring torsion detection frock, with the size of real-time regulation spring torsion, also when detecting that the power of opening and shutting of case does not satisfy technical requirement, the action of steerable second driving motor of this control box, the turned angle of regulation spring lid fixing base revises the size of spring torsion.
Referring to fig. 2 again, as an embodiment of the present invention, the linear driving mechanism includes a sliding table 902 connected to a first frame 900, a sliding seat 903 is slidably fitted in a height direction of the sliding table 902, a threaded hole 904 is formed in the sliding seat 903, a lead screw 905 is connected to the threaded hole 904 in an internal thread manner, and the lead screw 905 is in transmission connection with a rotating shaft of a first driving motor 901; the pressure sensor 11 is connected to the sliding seat 903. The first fixing mechanism 12 includes a support 1200 for placing the valve assembly 7 to be tested and two pressing cylinders 1201 for pressing the valve assembly 7 to be tested. The first rack 900 is sequentially provided with a lower travel switch and an upper travel switch from bottom to top, the lower travel switch and the upper travel switch are electrically connected with a control circuit of the first driving motor, and the sliding seat 903 is provided with a contact block matched with the lower travel switch and the upper travel switch. The structure setting of the linear driving mechanism of the pressure testing tool enables the telescopic motion of the pressure rod to be more stable, the opening and closing force testing of the valve core to be more accurate, the force values of the valve core opening and closing at different angles can be transmitted to the control box in real time, and the control box can obtain the accurate size of the opening and closing force of the valve core.
Referring to fig. 3 and 4 again, as an embodiment of the present invention, both sides of the upper end of the bayonet 300 are provided with a limit step 301 for supporting the lower end of the spring cover 701 when the pressing block 400 presses the spring cover 701 downward. The setting of the limiting steps 301 on the two sides of the upper end of the bayonet 300 can not only avoid the spring 700 from being crushed or deformed, but also play a limiting role in the mounting position of the spring cover 701, and can also ensure the synchronous rotation of the spring cover and the spring cover fixing seat, so that the torsion of the spring is detected more accurately.
Referring to fig. 3 to 5 again, as an embodiment of the present invention, the pressing mechanism includes a vertically disposed pressing cylinder 4 and a sliding block 401 slidably engaged with the spring cover fixing seat 3, a guiding hole 302 extending along a moving direction of a piston rod of the pressing cylinder 4 is disposed on the spring cover fixing seat 3, and the sliding block 401 is slidably engaged with the guiding hole 302; the lower end of a piston rod of the compaction cylinder 4 is connected with a sliding block 401, and the pressing block 400 is connected to the sliding block 401 and moves synchronously with the sliding block 401. The pressing block 400 is provided with a pressing part 406 which is matched and pressed with the upper end face of the bayonet 300, the pressing part 406 is provided with a gap 402 matched with the width size of the bayonet 300, the upper end of the spring cover 701 can be exposed from the gap 402, and two pressing inclined faces or pressing arc faces 403 which can press the spring cover 701 downwards are arranged on two sides of the bottom of the gap 402. The two pressing inclined planes are symmetrically arranged and the distance between the upper ends of the two pressing inclined planes is smaller than that between the lower ends of the two pressing inclined planes, or the two pressing arc-shaped surfaces 403 are symmetrically arranged and the distance between the upper ends of the two pressing arc-shaped surfaces is smaller than that between the lower ends of the two pressing arc-shaped surfaces 403. The arrangement of the notch 402 of the crimping part 406 on the pressing block 400 and the bottom of the notch 402 pressing the inclined plane or the pressing arc surface 403 makes the pressing of the spring cover firmer, avoids displacement or deviation in the rotation process of the spring cover, and ensures the qualified rate of the finished products.
Referring to fig. 5 again, as an embodiment of the present invention, a first inclined plane 304 extending into the working space 303 and inclined from top to bottom is disposed on one side of the spring cover fixing seat 3 close to the working space 303; a second inclined surface 404 matched and attached with the first inclined surface 304 is arranged on the outer side wall of the pressing block 400, when the pressing block 400 moves downwards until the second inclined surface 404 is attached with the first inclined surface 304, a gap 405 is arranged between the bottom of the press-connection part 406 and the upper end of the bayonet 300 of the spring cover fixing seat 3, and the press-connection part 406 presses the spring cover 701 on the upper end of the fixing seat. When the press block 400 moves downwards to the state that the second inclined plane 404 is attached to the first inclined plane 304 by the cooperation of the first inclined plane 304 on the spring cover fixing seat 3 and the second inclined plane 404 on the outer side wall of the press block 400, a gap 405 is formed between the bottom of the press-connection part 406 and the upper end of the bayonet 300 of the spring cover fixing seat 3, that is, the gap 405 is also formed, so that the spring is prevented from being crushed or deformed in the pressing process of the press block 400, and the spring cover is pressed more stably.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a car exhaust pipe valve opening and shutting power test and spring torsion detection device which characterized in that: it comprises
The device comprises a pressure testing tool and a spring torsion detecting tool; the pressure test tool comprises
The first frame is connected with a first driving motor and a linear driving mechanism, and the first driving motor is in transmission connection with the linear driving mechanism and is used for driving the linear driving mechanism to stretch and retract;
the first fixing mechanism is arranged at the bottom of the first rack and used for fixing a valve assembly to be tested;
the pressure sensor is provided with a pressure rod which is arranged downwards and the lower end of the pressure rod is abutted to a valve core of the valve assembly to be tested, the pressure sensor is connected with the linear driving mechanism and synchronously extends and retracts along with the linear driving mechanism, the pressure sensor is used for enabling the pressure rod to drive the valve core to open different angles, and the pressure sensor can sense force values when the valve core is opened at different angles;
the spring torsion detecting tool comprises
The second frame is connected with a second driving motor;
the second fixing mechanism is arranged at the bottom of the second rack and used for fixing the valve assembly to be detected;
the spring cover fixing seat is connected to the lower end of the rotating shaft of the second driving motor and synchronously rotates along with the rotating shaft of the second driving motor; the spring cover fixing seat is provided with a bayonet through which the upper end of a fixing column provided with a spring on the valve assembly passes, and a working space which can enable the spring cover to be assembled at the upper end of the fixing column and enables the spring cover to be connected with the upper end of the spring is arranged above the bayonet;
the pressing mechanism is connected to the spring cover fixing seat and provided with a pressing block arranged in the working space, the pressing block is used for downwards pressing the spring cover and the spring which are arranged above the bayonet and assembled on the fixing column, and the pressing block is used for enabling the upper ends of the spring cover and the spring to synchronously rotate when the spring cover fixing seat rotates;
the torsion sensor is used for detecting the torsion of the spring when the rotating shaft of the second driving motor rotates;
the control box is electrically connected with the pressure sensor, the torque sensor and the second driving motor and used for collecting force values of the pressure sensor when the pressure sensor senses that the valve core is opened at different angles, testing the opening and closing force of the valve core, and when the opening and closing force of the valve core does not meet the technical requirements, controlling the second driving motor to act by the control box, adjusting the rotating angle of the spring cover fixing seat and correcting the torque of the spring.
2. The device for testing opening and closing force and detecting torsion of spring for exhaust pipe valve of automobile according to claim 1, wherein: the linear driving mechanism comprises a sliding table connected to the first frame, a sliding seat is in sliding fit in the height direction of the sliding table, a threaded hole is formed in the sliding seat, a lead screw is connected with the threaded hole in a threaded manner, and the lead screw is in transmission connection with a rotating shaft of the first driving motor; the pressure sensor is connected to the sliding seat.
3. The device for testing opening and closing force and detecting torsion of spring for exhaust pipe valve of automobile according to claim 1, wherein: the first fixing mechanism comprises a support for placing the valve assembly to be tested and two pressing air cylinders for pressing the valve assembly to be tested.
4. The device for testing opening and closing force and detecting torsion of spring for exhaust pipe valve of automobile according to claim 1, wherein: and both sides of the upper end of the bayonet are provided with limiting steps for supporting the lower end of the spring cover when the pressing block presses the spring cover downwards.
5. The device for testing opening and closing force and detecting torsion of spring for exhaust pipe valve of automobile according to claim 1, wherein: the pressing mechanism comprises a vertically arranged pressing air cylinder and a sliding block which is in sliding fit with the spring cover fixing seat, the lower end of a piston rod of the pressing air cylinder is connected with the sliding block, and the pressing block is connected to the sliding block and moves synchronously with the sliding block.
6. The device for testing opening and closing force and detecting torsion of spring for exhaust pipe valve of automobile according to claim 5, wherein: the briquetting on be equipped with the crimping portion that matches with the bayonet socket up end and compress tightly, this crimping portion has the breach that matches with bayonet socket width size, this breach can supply the upper end of spring lid to expose, and the bottom both sides of breach are equipped with two cambered surfaces that compress tightly that can compress tightly the spring lid downwards, two cambered surfaces that compress tightly set up for the symmetry and the upper end distance is less than the lower extreme distance.
7. The device for testing opening and closing force and detecting torsion of spring for exhaust pipe valve of automobile according to claim 6, wherein: one side of the spring cover fixing seat, which is close to the working space, is provided with a first inclined plane which extends into the working space and is inclined from top to bottom; the outer side wall of the pressing block is provided with a second inclined surface matched and attached with the first inclined surface, when the pressing block moves downwards to the second inclined surface to be attached with the first inclined surface, a gap is arranged between the bottom of the pressing part and the upper end of the bayonet of the spring cover fixing seat, and the pressing part compresses the spring cover on the upper end of the fixing column.
8. The device for testing opening and closing force and detecting torsion of spring for exhaust pipe valve of automobile according to claim 1, wherein: the second fixing mechanism comprises a positioning seat, a supporting block and a fixing cylinder, the positioning seat is connected to the bottom of the second rack, a positioning groove for accommodating a valve assembly to be detected is formed in the positioning seat, the supporting block is connected with a locking rod in a rotatable mode, the free end of a piston rod of the fixing cylinder is hinged to the first end of the locking rod, the second end of the locking rod extends towards the positioning groove, and when the piston rod of the fixing cylinder pushes the locking rod outwards to rotate, the second end of the locking rod can be pressed against the valve assembly to be detected, which is arranged in the positioning groove.
9. The device for testing opening and closing force and detecting torsion of spring for exhaust pipe valve of automobile according to claim 1, wherein: the second frame is rotatably connected with a transmission polished rod coaxial with the rotating shaft of the second driving motor, the upper end of the transmission polished rod is connected with the rotating shaft of the second driving motor through a coupler and a speed reducer, and the lower end of the transmission polished rod is connected with a spring cover fixing seat.
10. The device for testing opening and closing force and detecting torsion of spring for exhaust pipe valve of automobile according to claim 2, wherein: the first rack is sequentially provided with a lower travel switch and an upper travel switch from bottom to top, the lower travel switch and the upper travel switch are electrically connected with a control circuit of the first driving motor, and the sliding seat is provided with a contact block matched with the lower travel switch and the upper travel switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011048948.6A CN112113763A (en) | 2020-09-29 | 2020-09-29 | Automobile exhaust pipe valve opening and closing force testing and spring torsion detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011048948.6A CN112113763A (en) | 2020-09-29 | 2020-09-29 | Automobile exhaust pipe valve opening and closing force testing and spring torsion detecting device |
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| CN112113763A true CN112113763A (en) | 2020-12-22 |
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| CN202011048948.6A Pending CN112113763A (en) | 2020-09-29 | 2020-09-29 | Automobile exhaust pipe valve opening and closing force testing and spring torsion detecting device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112665849A (en) * | 2020-12-25 | 2021-04-16 | 浙江元成科技有限公司 | Finished product detection device is used in expansion valve rotor production |
| CN112683435A (en) * | 2021-01-20 | 2021-04-20 | 宁夏计量质量检验检测研究院 | Equipment for detecting tableware covering strength |
| CN114964591A (en) * | 2022-06-06 | 2022-08-30 | 金华市宇辰粉末冶金有限公司 | Special torsion testing device and method for driving gear |
| CN116481927A (en) * | 2023-04-24 | 2023-07-25 | 山东富瑞工贸有限公司 | Valve pressure-bearing performance testing device and method |
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2020
- 2020-09-29 CN CN202011048948.6A patent/CN112113763A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112665849A (en) * | 2020-12-25 | 2021-04-16 | 浙江元成科技有限公司 | Finished product detection device is used in expansion valve rotor production |
| CN112683435A (en) * | 2021-01-20 | 2021-04-20 | 宁夏计量质量检验检测研究院 | Equipment for detecting tableware covering strength |
| CN114964591A (en) * | 2022-06-06 | 2022-08-30 | 金华市宇辰粉末冶金有限公司 | Special torsion testing device and method for driving gear |
| CN114964591B (en) * | 2022-06-06 | 2024-04-16 | 金华市宇辰粉末冶金有限公司 | Special torsion testing device for driving teeth and testing method thereof |
| CN116481927A (en) * | 2023-04-24 | 2023-07-25 | 山东富瑞工贸有限公司 | Valve pressure-bearing performance testing device and method |
| CN116481927B (en) * | 2023-04-24 | 2023-09-29 | 山东富瑞工贸有限公司 | Valve pressure-bearing performance testing device and method |
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