Engine test bench with power transmission

Abstract

The invention discloses an engine test bench with a power transmission function, and relates to the technical field of engine testing. The device comprises a base, a hollow frame is arranged at the top of the base, two transmission assemblies are arranged at the edge of the bottom of the inner wall of the base and driven by an external motor, the two transmission assemblies are symmetrically distributed about the axis of the base, and chain type conveying belts are arranged in the transmission assemblies and penetrate through the interior of the hollow frame. A supporting plate is arranged on the inner wall of the hollow frame, the top of the supporting plate makes contact with the top of the inner wall of the chain type conveying belt, a detection table is arranged on the edge of the top of the supporting plate, and a testing assembly is arranged on the top of the detection table. The non-smooth outer wall of the engine can be tightly attached while the contact area between the arc-shaped clamping plate and the engine is increased through the U-shaped rubber plate, and the situation that the precision of a detection result is reduced due to synchronous vibration of the connecting end of the test assembly caused by vibration generated after the engine is started and operated is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of engine testing, in particular to an engine testing bench with power transmission. Background Art

[0002] An engine is a general term for a machine that can convert other forms of energy into mechanical energy. Engines usually include internal combustion engines, external combustion engines, jet engines, electric motors, etc. Common internal combustion engines in life usually convert chemical energy into mechanical energy, thus bringing great convenience to the development of people's lives.

[0003] Patent announcement number CN211234972U discloses an engine test bench with power transmission, including a platform, support plates are arranged on both sides of the bottom end of the platform, a chain conveyor belt is arranged between the two support plates, a perforation is opened in the middle of the top of the platform, a first receiving groove connected to the perforation is opened inside the platform, a first cylinder is horizontally installed on the groove wall of the first receiving groove, and a bottom plate is arranged at the output end of the first cylinder. The patent facilitates the transportation of the engine by arranging a chain conveyor belt, can realize continuous detection, and greatly improves the efficiency of engine detection. Through the clamping mechanism, since the clamping mechanism includes two pressure rods, under the drive of the second cylinder, the pressure rod can swing inside the notch, so that the two pressure rods can be opened and closed, and then can meet the clamping requirements of engines of different sizes, and has a wide range of applications.

[0004] However, the device still has some shortcomings: the device can realize continuous detection of the engine, but in the process of detecting the engine, the engine itself is prone to vibration after starting and running, which can easily cause synchronous vibration of the connection end between the engine output end and the data detection component, thereby causing a certain impact on the detection data and reducing the accuracy of the detection results to a certain extent. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides an engine test bench with power transmission, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an engine test bench with power transmission, comprising a base, a hollow frame is arranged on the top of the base, two transmission assemblies are arranged at the bottom edge of the inner wall of the base, and the transmission assembly is driven by an external motor, the two transmission assemblies are symmetrically distributed around the axis of the base, a chain conveyor is arranged inside the transmission assembly, the chain conveyor passes through the inside of the hollow frame, a support plate is arranged on the inner wall of the hollow frame, the top of the support plate contacts the top of the inner wall of the chain conveyor, a detection platform is arranged at the top edge of the support plate, a test assembly is arranged on the top of the detection platform, and an electric motor is fixedly installed on the top of the inner wall of the hollow frame. A movable slide rail, an electric telescopic rod is slidably installed inside the electric slide rail, a hydraulic component is fixedly installed at the bottom of the telescopic end of the electric telescopic rod, the outer walls on the left and right sides of the hydraulic component are hinged with arc-shaped clamping plates through a torsion spring, a round rod is passed through and hinged at the bottom of the arc-shaped clamping plate, a U-shaped rubber plate is passed through and fixedly installed on the front and back of the outer wall of the round rod, a limit ring is fixedly installed on the outer wall of the telescopic end of the electric telescopic rod, two arc-shaped spring pieces are hinged on the outer wall of the limit ring, and an arc pressure plate is hinged at the bottom of the arc-shaped spring piece through a torsion spring, the external motor is started, and the transmission assembly drives the chain conveyor belt through the output end of the external motor for transmission, and the chain conveyor belt drives the engine to be tested to approach the testing platform When the engine is transported to the right side of the inspection table, the chain conveyor belt stops conveying. At this time, the electric slide rail starts, and the electric slide rail drives the electric telescopic rod to slide to the right inside itself. After the electric telescopic rod is started, its telescopic end drives the hydraulic component to move downward, and the hydraulic component drives the arc clamping plate to move synchronously. The arc clamping plate causes its own hinge shaft to start rotating through the hydraulic transmission of the hydraulic component, and the arc clamping plate rotates away from the center of the hydraulic component to open or directly clamp the engine. When the arc clamping plate clamps the engine, the chain conveyor belt is supported by the support plate to prevent the top of the chain conveyor belt from collapsing due to the heavy weight of the engine. The arc clamping plate closes the engine through the hydraulic component. Tightly clamp, at this time, the telescopic end of the electric telescopic rod rises to drive the engine to rise and the electric slide rail drives the electric telescopic rod to move horizontally to the left. The telescopic end of the electric telescopic rod places the engine on the top of the test bench. The staff pushes the engine conveying end into the test assembly for speed test and displays the data on the display screen on the front of the test assembly. The arc clamp drives the round rod and the U-shaped rubber plate to move synchronously. Before the arc clamp clamps the engine, the U-shaped rubber plate first contacts the outer wall of the engine to generate resistance. At this time, the hinge shaft between the U-shaped rubber plate and the round rod begins to rotate and the U-shaped rubber plate rotates downward in an arc. After the test is completed, the electric telescopic rod is used to place the engine on the top of the left side of the chain conveyor belt through the electric slide rail for continued transportation.When the arc clamp is tightened and clamped towards the center of the hydraulic assembly, the hydraulic assembly fails, causing the arc clamp to open and be limited by the arc pressure plate. At the same time, the arc pressure plate is subjected to the tension of the arc clamp, causing the arc spring to deform. The arc spring is stabilized and kept still by the limit ring. Since the elastic force of the arc spring is greater than the elastic force of the torsion spring between the arc clamp and the hydraulic assembly, the deformation process of the arc spring is extremely slow or difficult to deform. At this time, it is difficult for the arc clamp to loosen its grip on the engine. At the same time, the alarm component sends an alarm and the fault information is passed to the maintenance personnel. ;

[0007] According to the above technical solution, an alarm component is provided on the top of the hydraulic component, a torsion spring is provided between the inside of the arc-shaped clamping plate and the round rod, the two arc-shaped spring pieces are symmetrically distributed around the axis of the limiting ring, the inner wall of the arc-shaped pressure plate is slidably connected to the outer wall of the arc-shaped clamping plate, and a heat flow device is provided on the back of the hydraulic component for mixing the heat formed by the external wind influx and the heat emitted by the module engine itself when the carrier moves to do work.

[0008] According to the above technical solution, the heat flow device includes an L-shaped plate, a heating component and a fixed plate. The front of the top of the L-shaped plate is fixedly installed on the back of the outer wall of the fixed end of the electric telescopic rod, the bottom of the heating component is fixedly installed on the bottom of the L-shaped plate, and the back of the fixed plate is fixedly installed on the back of the inner wall of the hollow frame. The back of the heating component is slidably connected to the front of the fixed plate. When the electric telescopic rod moves left and right, it drives the L-shaped plate to move synchronously. The L-shaped plate drives the heating component to slide synchronously along the front of the fixed plate. The heating component is started, and the heating component dissipates heat within the test range of the engine. The heat dissipated by the heating component is used to simulate the ambient temperature when the engine drives the equipment or carrier to do work in a high-temperature outdoor environment.

[0009] According to the above technical scheme, the heat flow device also includes a sliding plate, a reciprocating screw, a transmission wheel, an L-shaped fan plate, a semicircular long block and a hinged plate, the bottom of the sliding plate is fixedly installed on the top of the L-shaped plate, the front end of the reciprocating screw passes through and is rotatably installed inside the sliding plate, the back of the transmission wheel is fixedly installed on the front end of the reciprocating screw, the inside of the L-shaped fan plate passes through and is slidably installed on the outer wall of the reciprocating screw, the front of the semicircular long block is fixedly installed on the back of the L-shaped fan plate, and the hinged plate is hinged at the back edge of the hollow frame through a torsion spring on the side away from the center of the L-shaped fan plate. The L-shaped plate drives the sliding plate to move synchronously, the sliding plate drives the reciprocating screw to move synchronously, and the reciprocating screw drives the transmission wheel to slide synchronously along the top of the hollow frame The movement generates friction, and the transmission wheel starts to rotate through the friction force and drives the reciprocating screw to rotate. When the reciprocating screw rotates, the reciprocating spiral groove on its outer wall restricts the built-in block of the L-shaped fan plate. At the same time, the built-in block of the L-shaped fan plate continuously contacts the inner wall of the reciprocating spiral groove. Therefore, when the reciprocating screw rotates, the L-shaped fan plate can slide back and forth along its outer wall, and the L-shaped fan plate drives the semicircular long block to move synchronously. The arc surface of the semicircular long block hits the inclined surface of the inner wall of the hinged plate to generate a resistance force, which causes the hinge axis of the hinged plate to start rotating. At the same time, the hinged plate moves away from the back side of the L-shaped fan plate. When the L-shaped fan plate moves left and right, the hinged plate on one side rotates around its own hinge axis, and the other side moves toward the back side of the L-shaped fan plate.

[0010] According to the above technical solution, the outer wall of the transmission wheel contacts the top of the inner wall of the hollow frame, the inner wall of the L-shaped fan plate contacts the outer wall of the reciprocating spiral groove of the reciprocating screw, and the bottom of the L-shaped fan plate contacts the bottom of the inner wall of the hollow frame. The inner wall of the hinged plate is located on the arc motion trajectory of the semicircular long block, and the front side of the L-shaped fan plate is provided with an anti-falling device for preventing the chain conveyor belt from deforming under the gravity pressure of the engine.

[0011] The U-shaped plate is used to hold the handle of the wheel hub and the spring to move relative to the bottom of the wheel hub.

[0012] According to the above technical scheme, the anti-falling device also includes an L-shaped resistance plate, a semi-cylinder, a hollow knocking plate and a hollow vibration plate. The front side of the top of the L-shaped resistance plate is fixedly installed on the back of the U-shaped plate, the bottom of the semi-cylinder is fixedly installed on the bottom of the inside of the L-shaped fan plate, the inside of the hollow knocking plate passes through and is fixedly installed on the outer wall of the fixed end of the elastic telescopic rod, and the top of the hollow vibration plate is fixedly installed on the outer wall of the U-shaped plate. When the L-shaped fan plate moves back and forth, it drives the semi-cylinder to move synchronously. When the semi-cylinder moves forward, it resists the arc surface of the L-shaped resistance plate to generate an upward resistance force, and the L-shaped resistance plate drives the U-shaped plate to move upward The U-shaped plate drives the through rod and the friction brush wheel to move upward synchronously. The friction brush wheel resists the bottom of the chain conveyor belt upward to cause it to deform. When the L-shaped fan plate moves forward, it moves horizontally left and right. At this time, the resistance of the semi-cylinder to the L-shaped resistance plate is a constantly changing single or multiple resistance. Therefore, the friction brush wheel above the L-shaped resistance plate also resists the chain conveyor belt asynchronously. At the same time, the hollow knocking plate moves synchronously when the U-shaped plate moves upward. When the U-shaped plate is reset by the elastic force of the elastic telescopic rod, it suddenly knocks on the top of the hollow vibration plate to generate vibration, and the friction brush wheel is caused to vibrate synchronously through the transmission of force.

[0013] According to the above technical solution, the bottom arc surface of the L-shaped resistance plate is located on the movement trajectory of the outer wall of the semi-cylinder, and the top of the hollow vibration plate is located on the movement trajectory of the bottom of the hollow knocking plate.

[0014] The present invention provides an engine test bench with power transmission, which has the following beneficial effects: (1) The present invention realizes the testing of engines of different models and specifications by means of the coordination of an electric slide rail, an electric telescopic rod, a hydraulic assembly, an arc-shaped clamping plate, a round rod, a U-shaped rubber plate, a limiting ring, an arc-shaped spring sheet and an arc-shaped pressure plate. This is different from the traditional test in which different types of clamping devices need to be frequently replaced. The preparation time for the test and the labor intensity of the staff are reduced. At the same time, the U-shaped rubber plate increases the contact area between the arc-shaped clamping plate and the engine and can fit tightly against the non-smooth outer wall of the engine, thereby preventing the vibration generated after the engine is started from causing the synchronous vibration of the connection end of the test assembly, thereby reducing the accuracy of the test result. It also effectively prevents the engine from falling due to a hydraulic assembly failure, thereby preventing the engine from falling and being damaged, thereby preventing the chain conveyor belt or other components from being damaged and causing economic losses. At the same time, it is convenient for the staff to understand the operating status of the hydraulic assembly in a timely manner to ensure the timeliness of equipment maintenance.

[0015] (2) The present invention effectively simulates the actual operation scenario of the engine during outdoor use by setting up a heat flow device, through an electric telescopic rod, an L-shaped plate, a heating component, a fixed plate, a sliding plate, a reciprocating screw, a transmission wheel, an L-shaped fan plate, a semicircular long block and a hinged plate, so as to facilitate testing whether the engine will experience a reduction in efficiency when it generates heat during its own operation and in an outdoor high temperature environment compared with a simple self-heating scenario, thereby improving the authenticity of the test work; at the same time, it simulates the engine driving a carrier such as a car moving or turning, and the external airflow enters the cabin to drive the heat to be indirectly discharged from the cabin. After the heat stored in the cabin is indirectly discharged, the energy efficiency test data of the engine can be improved and stably output, thereby further improving the diversity and accuracy of the test data.

[0016] (3) The present invention adopts the setting of the anti-falling device, and cooperates with the L-shaped fan plate, the fixed seat, the elastic telescopic rod, the U-shaped plate, the through rod, the friction brush wheel, the L-shaped contact plate, the semi-cylinder, the hollow knocking plate and the hollow vibration plate. The friction brush wheel is used to rotate and brush away the solid particles or dirt remaining in the gap of the chain conveyor belt, so as to avoid the gap enlargement caused by the jamming of solid particles in the gap of the chain conveyor belt, thereby reducing the tightness of the connection between the gaps, and preventing the dirt from accelerating the oxidation rate of the chain conveyor belt; at the same time, the friction brush wheel is used to intermittently contact the chain conveyor belt with a single or multiple synchronous frictions, so as to realize the friction of the chain conveyor belt with multiple ranges and different frequencies, thereby reducing the risk of the chain conveyor belt and the transmission component falling off due to loose connection. At the same time, the vibration force is used to avoid the occurrence of a jamming phenomenon when the friction brush wheel deeply contacts the chain conveyor belt upward, and to prevent the friction brush wheel from being stuck in the gap of the chain conveyor belt and being pulled off. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the present invention as a whole; Figure 2 It is a bottom perspective schematic diagram of the present invention as a whole; Figure 3 This is a schematic diagram of the peripheral structure of the electric telescopic rod of the present invention; Figure 4 It is a schematic diagram of the peripheral structure of the electric telescopic rod of the present invention from a front view; Figure 5 For the present invention Figure 4 A schematic diagram of the structure enlargement in the middle; Figure 6 It is a schematic diagram of the heat flow device of the present invention; Figure 7 This is a schematic diagram of the heat flow device of the present invention from the back side; Figure 8 It is a schematic diagram of the anti-falling device of the present invention; Fig. 9 It is a schematic diagram showing the overall structure of the anti-falling device of the present invention.

[0018] In the figure: 1, base; 2, hollow frame; 21, transmission assembly; 22, chain conveyor belt; 23, support plate; 3, test bench; 31, test assembly; 4, heat flow device; 41, L-shaped plate; 42, heating assembly; 43, fixed plate; 44, sliding plate; 45, reciprocating screw rod; 46, transmission wheel; 47, L-shaped fan plate; 48, semicircular long block; 49, hinged plate; 5, anti-drop device; 5 1. Fixed seat; 52. Elastic telescopic rod; 53. U-shaped plate; 54. Through rod; 55. Friction brush wheel; 56. L-shaped resistance plate; 57. Semi-cylinder; 58. Hollow knocking plate; 59. Hollow vibration plate; 6. Electric slide rail; 7. Electric telescopic rod; 8. Hydraulic assembly; 9. Arc splint; 10. Round rod; 11. U-shaped rubber plate; 12. Limiting ring; 13. Arc spring piece; 14. Arc pressure plate. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] See also Figure 1-Figure 9One embodiment of the present invention is: an engine test bench with power transmission, comprising a base 1, a hollow frame 2 is arranged on the top of the base 1, two transmission components 21 are arranged at the bottom edge of the inner wall of the base 1, and the transmission components 21 are driven by an external motor, the two transmission components 21 are symmetrically distributed around the axis of the base 1, a chain conveyor 22 is arranged inside the transmission component 21, the chain conveyor 22 passes through the inside of the hollow frame 2, a support plate 23 is arranged on the inner wall of the hollow frame 2, the top of the support plate 23 contacts the top of the inner wall of the chain conveyor 22, a test bench 3 is arranged at the top edge of the support plate 23, a test assembly 31 is arranged on the top of the test bench 3, an electric slide rail 6 is fixedly installed on the top of the inner wall of the hollow frame 2, an electric telescopic rod 7 is slidably installed inside the electric slide rail 6, a hydraulic assembly 8 is fixedly installed at the bottom of the telescopic end of the electric telescopic rod 7, the outer walls of the left and right sides of the hydraulic assembly 8 are both hinged with arc splints 9 through torsion springs, a round rod 10 is penetrated and hinged at the bottom of the inner part of the arc splint 9, and the front and back sides of the outer walls of the round rod 10 are penetrated and fixed A U-shaped rubber plate 11 is fixedly installed, and a limit ring 12 is fixedly installed on the outer wall of the telescopic end of the electric telescopic rod 7. Two arc-shaped spring pieces 13 are hinged on the outer wall of the limit ring 12. The bottom of the arc-shaped spring piece 13 is hinged with an arc-shaped pressure plate 14 through a torsion spring. Through the above cooperation, testing work for engines of different models and specifications can be achieved. Different from the traditional test, different types of clamping equipment need to be frequently replaced, which reduces the preparation time for the test work and the labor intensity of the staff. At the same time, the U-shaped rubber plate 11 increases the contact area between the arc clamping plate 9 and the engine while being able to fit tightly to the non-smooth outer wall of the engine, preventing the vibration generated after the engine starts running from causing the synchronous vibration of the connecting end of the test component 31, thereby reducing the accuracy of the test result; through the above cooperation, the phenomenon of the engine falling due to a failure of the hydraulic component 8 can be effectively avoided, and the chain conveyor belt 22 or other components can be avoided from being damaged while the engine itself falls and is damaged, which increases economic losses. At the same time, it is convenient for the staff to understand the operating status of the hydraulic component 8 in time to ensure the timeliness of equipment maintenance.

[0021] An alarm component is arranged on the top of the hydraulic component 8, a torsion spring is arranged between the inside of the arc-shaped clamping plate 9 and the round rod 10, two arc-shaped spring pieces 13 are symmetrically distributed around the axis of the limiting ring 12, the inner wall of the arc-shaped pressure plate 14 is slidingly connected to the outer wall of the arc-shaped clamping plate 9, and a heat flow device 4 is arranged on the back of the hydraulic component 8 for mixing the heat formed by the external wind influx and the heat emitted by the module engine itself when the carrier moves to do work.

[0022] When in use, the external motor is started, and the transmission component 21 drives the chain conveyor 22 through the output end of the external motor to transmit, and the chain conveyor 22 drives the engine to be tested to move toward the direction close to the testing platform 3. When the engine is transported to the right side of the testing platform 3, the chain conveyor 22 stops conveying, and the electric slide rail 6 is started at this time, and the electric slide rail 6 drives the electric telescopic rod 7 to slide rightward inside itself. After the electric telescopic rod 7 is started, its telescopic end drives the hydraulic component 8 to move downward, and the hydraulic component 8 drives the arc clamping plate 9 to move synchronously. The arc clamping plate 9 is moved by the hydraulic component The hydraulic transmission of the component 8 causes its own hinge shaft to start rotating and the arc clamping plate 9 rotates away from the center of the hydraulic component 8 to open or directly clamp the engine. When the arc clamping plate 9 clamps the engine, the chain conveyor belt 22 is supported by the support plate 23 to prevent the top of the chain conveyor belt 22 from collapsing due to the heavy weight of the engine. The arc clamping plate 9 tightens and clamps the engine through the hydraulic component 8. At this time, the telescopic end of the electric telescopic rod 7 rises to drive the engine to rise, and the electric slide rail 6 drives the electric telescopic rod 7 to move to the left, and the electric telescopic rod 7 extends. The engine is placed on the top of the test bench 3 at the retracted end, and the staff pushes the engine conveying end into the test assembly 31 for speed test and displays data through the display screen on the front of the test assembly 31. Before the arc splint 9 clamps the engine, the U-shaped rubber plate 11 first contacts the outer wall of the engine to generate a resistance force. At this time, the hinge shaft between the U-shaped rubber plate 11 and the round rod 10 begins to rotate and the U-shaped rubber plate 11 rotates downward in an arc. Through the above cooperation, testing work for engines of different models and specifications can be achieved, which is different from the traditional test that requires frequent replacement of different models of clamping equipment, reducing the preparation time for the test work and the labor intensity of the staff. At the same time, the U-shaped rubber plate 11 increases the contact area between the arc splint 9 and the engine while being able to fit closely to the non-smooth outer wall of the engine, preventing the vibration generated after the engine starts running from causing the synchronous vibration of the connection end of the test assembly 31, thereby reducing the accuracy of the test result; after the test is completed, the electric telescopic rod 7 is used to place the engine on the top of the left side of the chain conveyor belt 22 through the electric slide rail 6 for continued transportation;When the arc clamping plate 9 tightens and clamps the engine toward the center of the hydraulic assembly 8, the hydraulic assembly 8 fails, causing the arc clamping plate 9 to open and be limited by the arc pressure plate 14. At the same time, the arc pressure plate 14 is subjected to the tension of the arc clamping plate 9, which causes the arc spring piece 13 to deform. The arc spring piece 13 is stabilized and kept stationary by the limiting ring 12. Since the elastic force of the arc spring piece 13 is greater than the elastic force of the torsion spring between the arc clamping plate 9 and the hydraulic assembly 8, the deformation process of the arc spring piece 13 is extremely slow or difficult to deform. At this time, the arc clamping plate 9 is difficult to loosen the clamping of the engine. At the same time, the alarm component sends an alarm sound and the fault information is passed to the maintenance personnel. Through the above cooperation, the engine can be effectively prevented from falling due to the failure of the hydraulic assembly 8, and the chain conveyor belt 22 or other components can be damaged while the engine itself falls and is damaged, which increases economic losses. At the same time, it is convenient for the staff to understand the operating status of the hydraulic assembly 8 in time to ensure the timeliness of equipment maintenance. ;

[0023] See also Figure 1-Figure 9 , based on the above embodiment, another embodiment of the present invention further includes a heat flow device 4; The heat flow device 4 includes an L-shaped plate 41, a heating component 42 and a fixed plate 43. The front of the top of the L-shaped plate 41 is fixedly installed on the back of the outer wall of the fixed end of the electric telescopic rod 7, the bottom of the heating component 42 is fixedly installed on the bottom of the L-shaped plate 41, and the back of the fixed plate 43 is fixedly installed on the back of the inner wall of the hollow frame 2. The back of the heating component 42 is slidably connected to the front of the fixed plate 43. Through the above coordination, the real operation scenario of the engine during outdoor use is simulated, which is convenient for testing whether the engine will have a reduction in efficiency when it generates heat during its own operation and in a high temperature outdoor environment compared with the simple self-heating scenario, thereby improving the authenticity of the test work.

[0024] The heat flow device 4 also includes a sliding plate 44, a reciprocating screw 45, a transmission wheel 46, an L-shaped fan plate 47, a semicircular long block 48 and a hinged plate 49. The bottom of the sliding plate 44 is fixedly installed on the top of the L-shaped plate 41, the front end of the reciprocating screw 45 passes through and is rotatably installed inside the sliding plate 44, the back of the transmission wheel 46 is fixedly installed on the front end of the reciprocating screw 45, the inside of the L-shaped fan plate 47 passes through and is slidably installed on the outer wall of the reciprocating screw 45, the front of the semicircular long block 48 is fixedly installed on the back of the L-shaped fan plate 47, and the hinged plate 49 is hinged at the back edge of the hollow frame 2 through a torsion spring on the side away from the center of the L-shaped fan plate 47. By simulating the above cooperation, when an engine drives a carrier such as a car to move or turn, the external airflow enters the cabin and drives the heat to be indirectly discharged from the cabin. After the heat stored in the cabin of the engine is indirectly discharged, whether the energy efficiency test data of the engine can be improved and stably output, further improving the diversity and accuracy of the test data.

[0025] The outer wall of the transmission wheel 46 contacts the top of the inner wall of the hollow frame 2, the inner wall of the L-shaped fan plate 47 contacts the outer wall of the reciprocating spiral groove of the reciprocating screw rod 45, and the bottom of the L-shaped fan plate 47 contacts the bottom of the inner wall of the hollow frame 2. The inner wall of the hinged plate 49 is located on the arc motion trajectory of the semicircular long block 48. The front side of the L-shaped fan plate 47 is provided with an anti-falling device 5 for preventing the chain conveyor belt 22 from deforming under the pressure of engine gravity.

[0026] When in use, the electric telescopic rod 7 drives the L-shaped plate 41 to move synchronously when it moves left and right, and the L-shaped plate 41 drives the heating component 42 to slide synchronously along the front of the fixed plate 43, and the heating component 42 is started. The heating component 42 dissipates heat within the engine test range, and the heat dissipated by the heating component 42 is used to simulate the ambient temperature when the engine drives the equipment or carrier to do work in an outdoor high-temperature environment. By simulating the actual operation scenario of the engine during outdoor use through the above coordination, it is convenient to test whether the engine will have a reduction in efficiency when it generates heat during its own operation and in an outdoor high-temperature environment compared with a simple self-heating scenario, thereby improving the authenticity of the test work; the L-shaped plate 41 drives the sliding plate 44 to move synchronously, and the sliding plate 44 drives the reciprocating screw 45 to move synchronously, and the reciprocating screw 45 drives the transmission wheel 46 to slide synchronously along the top of the hollow frame 2 to generate friction, and the transmission wheel 46 starts to rotate through the friction and drives the reciprocating screw 45 to rotate, and when the reciprocating screw 45 rotates, it reciprocates the L The L-shaped fan plate 47 is restricted by the built-in block, and the built-in block of the L-shaped fan plate 47 continuously contacts the inner wall of the reciprocating spiral groove. Therefore, when the reciprocating screw rod 45 rotates, the L-shaped fan plate 47 can slide back and forth along its outer wall, and the L-shaped fan plate 47 drives the semicircular long block 48 to move synchronously. The arc surface of the semicircular long block 48 resists the inclined surface of the inner wall of the hinge plate 49 to generate a resistance force, which prompts the hinge axis of the hinge plate 49 to start rotating. At the same time, the hinge plate 49 moves away from the back of the L-shaped fan plate 47. When the L-shaped fan plate 47 moves left and right, the hinge plate 49 on one side rotates around its own hinge axis, and the other side moves toward the back of the L-shaped fan plate 47. By simulating the engine driving a carrier such as a car when it moves or turns, the external airflow enters the cabin and drives the heat to be indirectly discharged from the cabin. After the heat stored in the cabin is indirectly discharged, the energy efficiency test data of the engine can be improved and stably output, thereby further improving the diversity and accuracy of the test data.

[0027] See also Figure 1-Figure 9 , based on the above embodiment, another embodiment of the present invention further includes an anti-falling device 5; The anti-falling device 5 includes a fixed seat 51, an elastic telescopic rod 52, a U-shaped plate 53, a through rod 54 and a friction brush wheel 55. The bottom of the fixed seat 51 is fixedly installed at the center of the bottom of the inner wall of the hollow frame 2, the bottom of the fixed end of the elastic telescopic rod 52 is fixedly installed on the top of the fixed seat 51, the bottom of the U-shaped plate 53 is fixedly installed on the top of the telescopic end of the elastic telescopic rod 52, the outer walls of both ends of the through rod 54 are fixedly installed on the inner wall of the U-shaped plate 53, the friction brush wheel 55 is internally rotatably installed on the outer wall of the through rod 54, and the outer wall of the friction brush wheel 55 contacts the bottom of the chain conveyor belt 22. Through the above cooperation, the friction brush wheel 55 is used to rotate and brush to remove the solid particles or dirt remaining in the gap of the chain conveyor belt 22, so as to avoid the gap of the chain conveyor belt 22 being enlarged due to the jamming of solid particles, thereby reducing the tightness of the connection between each other, and at the same time preventing dirt from accelerating the oxidation rate of the chain conveyor belt 22.

[0028] The anti-falling device 5 also includes an L-shaped contact plate 56, a semi-cylinder 57, a hollow knocking plate 58 and a hollow vibration plate 59. The front side of the top of the L-shaped contact plate 56 is fixedly installed on the back of the U-shaped plate 53, the bottom of the semi-cylinder 57 is fixedly installed on the bottom of the L-shaped fan plate 47, the hollow knocking plate 58 passes through and is fixedly installed on the outer wall of the fixed end of the elastic telescopic rod 52, and the top of the hollow vibration plate 59 is fixedly installed on the outer wall of the U-shaped plate 53. Through the above cooperation, the friction brush wheel 55 is used to perform intermittent single or multiple synchronous resistances on the chain conveyor belt 22, so as to achieve resistance of the chain conveyor belt 22 in multiple ranges and different frequencies, reduce the risk of the chain conveyor belt 22 and the transmission assembly 21 falling off due to loose connection, and rely on vibration force to avoid the friction brush wheel 55 from deeply resisting the chain conveyor belt 22 upward without a jam phenomenon, and prevent the friction brush wheel 55 from being stuck in the gap of the chain conveyor belt 22 and being pulled off.

[0029] The bottom arc surface of the L-shaped abutment plate 56 is located on the movement trajectory of the outer wall of the semi-cylinder 57 , and the top of the hollow vibration plate 59 is located on the bottom movement trajectory of the hollow knocking plate 58 .

[0030] When in use, the fixing seat 51 limits the elastic telescopic rod 52, and the elastic telescopic rod 52 limits the U-shaped plate 53. The U-shaped plate 53 forces the through rod 54 to remain stationary. The through rod 54 drives the friction brush wheel 55. When the elastic telescopic rod 52 is stationary and in the initial state, its outer wall can contact the bottom of the outer wall of the chain conveyor belt 22 and generate friction. The friction brush wheel 55 starts to rotate due to the friction force. Therefore, during the transmission process of the chain conveyor belt 22, the friction brush wheel 55 continuously contacts the adjacent gaps and crevices of the chain conveyor belt 22. The solid particles or dirt remaining in the gap of the chain conveyor belt 22 are removed by rotating the brush, so as to avoid the gap of the chain conveyor belt 22 being enlarged due to the jamming of solid particles, thereby reducing the tightness of the connection between them, and at the same time preventing the dirt from accelerating the oxidation rate of the chain conveyor belt 22; when the L-shaped fan plate 47 moves forward and backward, it drives the semi-cylinder 57 to move synchronously, and when the semi-cylinder 57 moves forward, it contacts the arc surface of the L-shaped contact plate 56 to generate an upward contact force, and the L-shaped contact plate 56 drives the U-shaped plate 53 to move upward, and the U-shaped plate 53 drives the through rod 54 and the friction brush wheel 55 to move upward synchronously. The friction brush wheel 55 contacts the bottom of the chain conveyor belt 22 upward to cause it to deform. When the L-shaped fan plate 47 moves forward, it moves horizontally to the left and right. At this time, the contact between the semi-cylinder 57 and the L-shaped contact plate 56 is a continuously changing single or multiple contact. Therefore, the friction brush wheel 55 above the L-shaped contact plate 56 also contacts the chain conveyor belt 22 asynchronously. At the same time, when the U-shaped plate 53 moves upward, the hollow knocking plate 58 moves synchronously. When the U-shaped plate 53 is reset by the elastic force of the elastic telescopic rod 52, it suddenly knocks on the top of the hollow vibration plate 59 Vibration is generated, and the friction brush wheel 55 is caused to vibrate synchronously through the transmission of force. Through the above cooperation, the friction brush wheel 55 is relied upon to perform intermittent single or multiple synchronous resistances on the chain conveyor belt 22, so as to achieve resistance of the chain conveyor belt 22 in multiple ranges and at different frequencies, thereby reducing the risk of the chain conveyor belt 22 and the transmission component 21 falling off due to loose connection. At the same time, the vibration force is relied upon to avoid the friction brush wheel 55 from deeply resisting the chain conveyor belt 22 upward to prevent the friction brush wheel 55 from getting stuck in the gap inside the chain conveyor belt 22 and being pulled off.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An engine test bench with power transmission, comprising a base (1), a hollow frame (2) being arranged on the top of the base (1), two transmission assemblies (21) being arranged at the bottom edge of the inner wall of the base (1), and the transmission assemblies (21) being driven by an external motor, the two transmission assemblies (21) being symmetrically distributed around the axis of the base (1), a chain conveyor belt (22) being arranged inside the transmission assembly (21), the chain conveyor belt (22) passing through the inside of the hollow frame (2), a support plate (23) being arranged on the inner wall of the hollow frame (2), the top of the support plate (23) being in contact with the top of the inner wall of the chain conveyor belt (22), a test bench (3) being arranged at the top edge of the support plate (23), and a test assembly (31) being arranged on the top of the test bench (3), characterized in that: An electric slide rail (6) is fixedly mounted on the top of the inner wall of the hollow frame (2), an electric telescopic rod (7) is slidably mounted inside the electric slide rail (6), a hydraulic assembly (8) is fixedly mounted on the bottom of the telescopic end of the electric telescopic rod (7), arc-shaped clamping plates (9) are hingedly connected to the outer walls on both sides of the hydraulic assembly (8) through torsion springs, a round rod (10) passes through and is hingedly connected to the lower part of the arc-shaped clamping plate (9), a U-shaped rubber plate (11) passes through and is fixedly mounted on the front and back sides of the outer wall of the round rod (10), a limiting ring (12) is fixedly mounted on the outer wall of the telescopic end of the electric telescopic rod (7), two arc-shaped spring sheets (13) are hingedly connected to the outer wall of the limiting ring (12), and an arc-shaped pressure plate (14) is hingedly connected to the bottom of the arc-shaped spring sheet (13) through a torsion spring.

2. An engine test bench with power transmission according to claim 1, characterized in that: An alarm component is arranged on the top of the hydraulic component (8), a torsion spring is arranged between the inside of the arc-shaped clamping plate (9) and the round rod (10), the two arc-shaped spring pieces (13) are symmetrically distributed about the axis of the limit ring (12), the inner wall of the arc-shaped pressure plate (14) is slidably connected to the outer wall of the arc-shaped clamping plate (9), and a heat flow device (4) is arranged on the back of the hydraulic component (8) for mixing the heat generated by the external wind force rushing in and the heat emitted by the module engine itself when the carrier moves to perform work.

3. An engine test bench with power transmission according to claim 2, characterized in that: The heat flow device (4) comprises an L-shaped plate (41), a heating component (42) and a fixing plate (43); the front of the top of the L-shaped plate (41) is fixedly mounted on the back of the outer wall of the fixed end of the electric telescopic rod (7); the bottom of the heating component (42) is fixedly mounted on the bottom of the L-shaped plate (41); the back of the fixing plate (43) is fixedly mounted on the back of the inner wall of the hollow frame (2); and the back of the heating component (42) is slidably connected to the front of the fixing plate (43).

4. An engine test bench with power transmission according to claim 3, characterized in that: The heat flow device (4) further comprises a sliding plate (44), a reciprocating screw rod (45), a transmission wheel (46), an L-shaped fan plate (47), a semicircular long block (48) and a hinged plate (49), wherein the bottom of the sliding plate (44) is fixedly mounted on the top of the L-shaped plate (41), the front end of the reciprocating screw rod (45) passes through and is rotatably mounted inside the sliding plate (44), the back of the transmission wheel (46) is fixedly mounted on the front end of the reciprocating screw rod (45), the inside of the L-shaped fan plate (47) passes through and is slidably mounted on the outer wall of the reciprocating screw rod (45), the front of the semicircular long block (48) is fixedly mounted on the back of the L-shaped fan plate (47), and the hinged plate (49) is hinged to the back edge of the hollow frame (2) via a torsion spring on the side away from the center of the L-shaped fan plate (47).

5. The engine test bench with power transmission according to claim 4, characterized in that: The outer wall of the transmission wheel (46) contacts the top of the inner wall of the hollow frame (2), the inner wall of the L-shaped fan plate (47) contacts the outer wall of the reciprocating spiral groove of the reciprocating screw rod (45), and the bottom of the L-shaped fan plate (47) contacts the bottom of the inner wall of the hollow frame (2), the inner wall of the hinged plate (49) is located on the arc surface motion trajectory of the semicircular long block (48), and the front of the L-shaped fan plate (47) is provided with an anti-drop device (5) for preventing the chain conveyor belt (22) from deforming under the pressure of engine gravity.

6. The engine test bench with power transmission according to claim 5, characterized in that: The anti-falling device (5) comprises a fixed seat (51), an elastic telescopic rod (52), a U-shaped plate (53), a through rod (54) and a friction brush wheel (55); the bottom of the fixed seat (51) is fixedly mounted at the center of the bottom of the inner wall of the hollow frame (2); the bottom of the fixed end of the elastic telescopic rod (52) is fixedly mounted on the top of the fixed seat (51); the bottom of the U-shaped plate (53) is fixedly mounted on the top of the telescopic end of the elastic telescopic rod (52); the outer walls of both ends of the through rod (54) are fixedly mounted on the inner wall of the U-shaped plate (53); the friction brush wheel (55) is rotatably mounted inside the through rod (54) on the outer wall; the outer wall of the friction brush wheel (55) contacts the bottom of the chain conveyor belt (22).

7. An engine test bench with power transmission according to claim 6, characterized in that: The anti-falling device (5) further comprises an L-shaped abutment plate (56), a semi-cylinder (57), a hollow knocking plate (58) and a hollow vibration plate (59); the front side of the top of the L-shaped abutment plate (56) is fixedly mounted on the back of the U-shaped plate (53); the bottom of the semi-cylinder (57) is fixedly mounted on the bottom of the inside of the L-shaped fan plate (47); the inside of the hollow knocking plate (58) passes through and is fixedly mounted on the outer wall of the fixed end of the elastic telescopic rod (52); and the top of the hollow vibration plate (59) is fixedly mounted on the outer wall of the U-shaped plate (53).

8. The engine test bench with power transmission according to claim 7, characterized in that: The arc surface at the bottom of the L-shaped abutment plate (56) is located on the movement trajectory of the outer wall of the semi-cylinder (57), and the top of the hollow vibration plate (59) is located on the movement trajectory of the bottom of the hollow striking plate (58).

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