A high and low temperature testing device for laser level

Abstract

The application relates to a high-low temperature testing device for a laser level meter, and belongs to the technical field of temperature testing. The high-low temperature testing device for the laser level meter comprises a testing box and a fixing frame, the bottom of the fixing frame is provided with a shaking assembly and a flow guiding assembly, the top of the fixing frame is provided with a supporting assembly, and the testing box is provided with a driving assembly. Through the shaking assembly, vibration testing of the laser level meter under different temperatures in the transportation process and on a transportation device such as a car can be simulated. Through comprehensive testing of high-low temperature circulation and vibration, potential defects of the laser level meter in a real environment can be better exposed, problems of the laser level meter that cannot be exposed in a static state can be exposed in a dynamic environment, the testing range of the laser level meter is expanded, the performance of the laser level meter can be evaluated in multiple aspects, and the laser level meter is convenient to use.

Description

Technical Field

[0001] This invention belongs to the field of temperature testing technology, specifically relating to a high and low temperature testing device for a laser level. Background Technology

[0002] A laser level is a portable measuring instrument that uses a laser beam to project horizontal and vertical reference lines to achieve rapid and accurate leveling, straightening, and squareness. It has been widely used in many fields such as construction, decoration, and installation. High and low temperature testing of laser levels is an important test method to evaluate their performance stability and reliability in extreme temperature environments.

[0003] A search revealed a Chinese utility model patent with application number CN202323118936.8, which discloses a high and low temperature cyclic aging test device for a laser level. This device utilizes a rotating plate. When the laser level rotates with a limiting structure, the limiting structure abuts against the rotating plate, lifting the rotating plate into a sealed temperature simulation chamber. When the limiting structure leaves the rotating plate, the rotating plate naturally rotates downwards under its own weight, continuing to seal the temperature simulation chamber. This ensures smooth testing while sealing and separating the high and low temperature simulation environments, preventing communication between the high and low temperature simulation environments and the external environment. This significantly reduces the energy consumption of the laser level high and low temperature cyclic aging test device.

[0004] However, when conducting high and low temperature tests on laser levels, the laser level is usually placed directly in a test chamber, which is then heated and then cooled to achieve the purpose of testing the laser level. This testing method can only simply test the performance of the laser level under high and low temperature environments, and cannot simulate the performance of the laser level under vibration in high and low temperature environments. This makes the test data relatively one-sided and unable to comprehensively evaluate the performance of the laser level. Based on this, a high and low temperature testing device for laser levels is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a reasonably designed high and low temperature testing device for laser levels in order to solve the above-mentioned problems.

[0006] The present invention achieves the above objectives through the following technical solutions:

[0007] A high and low temperature testing device for a laser level includes a testing box, a control module fixedly connected to the testing box, a testing chamber on the testing box, a chamber cover rotatably connected to the testing box and adapted to the testing chamber, an air inlet pipe fixedly connected to the testing box, an air blowing hole inside the testing chamber, an exhaust pipe fixedly connected to the testing box and communicating with the interior of the testing chamber, a fixing hole inside the testing chamber, a fixing frame inserted into the fixing hole, a support component for placing the laser level installed on the top of the fixing frame, a drive component installed in the middle of the testing box, a flow guiding component for guiding gas fixedly connected to the bottom of the fixing frame, a shaking component for shaking the support component fixedly connected to the bottom of the fixing frame, the shaking component including a support block fixedly connected to the bottom of the fixing frame, a drive shaft rotatably connected through the support block, a cam fixedly connected to one end of the drive shaft, a shaking block fixedly connected to the bottom of the support component, the shaking block facing the cam, and a shaking groove for the shaking block to move up and down through the fixing frame.

[0008] A clutch assembly is fixedly connected to a fixed frame. The clutch assembly includes an electric telescopic rod fixedly connected to the fixed frame. A push-pull plate is fixedly connected to the output end of the electric telescopic rod. A first clutch plate is rotatably connected to one side of the push-pull plate. A second clutch plate is fixedly connected to the other end of the drive shaft. The first clutch plate is positioned opposite the second clutch plate.

[0009] As a further optimization of the present invention, the flow guiding assembly includes a gearbox fixedly connected to the bottom of the fixed frame, a rotating rod rotatably connected through the gearbox, a second bevel gear and a spline shaft fixedly connected to both ends of the rotating rod respectively, a spline sleeve slidably connected to the outer surface of the spline shaft, a fan blade fixedly connected to the outer surface of the spline sleeve, and a support plate fixedly connected to the bottom of the fixed frame.

[0010] As a further optimization of the present invention, the spline sleeve passes through the support plate and is slidably connected to the support plate, and the second bevel gear is located inside the gearbox.

[0011] As a further optimization of the present invention, the support component includes a plug slot formed on the top of the fixing frame, a plug plate is inserted into the plug slot, a telescopic column and a buffer spring are fixedly connected to the top of the plug plate, and a support frame is fixedly connected to the top of the telescopic column.

[0012] As a further optimization of the present invention, the top of the buffer spring is fixedly connected to the support frame, the buffer spring is sleeved on the outer surface of the telescopic column, and the shaking block is fixedly connected to the bottom of the support frame.

[0013] As a further optimization of the present invention, the first clutch plate is fixedly connected to the end of the spline sleeve, and the push-pull plate is sleeved on the end of the spline sleeve.

[0014] As a further optimization of the present invention, the driving assembly includes a motor fixedly connected to the top of the inspection box, a rotating shaft fixedly connected to the output end of the motor, a limit rod fixedly connected to the outer surface of the rotating shaft, a first bevel gear slidably connected to the outer surface of the rotating shaft, a limit groove being formed in the first bevel gear, and the limit rod being slidably connected to the limit groove.

[0015] As a further optimization of the present invention, the first bevel gear meshes with the second bevel gear, the first bevel gear is rotatably connected to the inner bottom of the gearbox, and the rotating shaft passes through the gearbox.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. This invention, through the setting of the vibration component, can simulate the vibration test of a laser level during transportation and when installed on transportation devices such as automobiles at different temperatures. Through the comprehensive test of high and low temperature cycles and vibration, it can better expose potential defects of the laser level that would only appear in real environment. At the same time, it can expose problems that cannot be exposed under static conditions in dynamic environment, expand the test range of the laser level, facilitate the multi-faceted evaluation of the laser level's performance, and make it convenient to use.

[0018] 2. By setting up the flow guiding component, the present invention can guide the gas in the inspection chamber, improve the heating and cooling rate of the inspection chamber, ensure the uniformity of the internal temperature of the inspection chamber, thereby ensuring the quality of inspection of all laser levels, and avoiding the significant differences in the performance of the same batch of laser levels when inspected at different positions due to the temperature difference inside the inspection chamber, which would prevent the objective evaluation of the true performance of the laser level under the target temperature environment.

[0019] 3. This invention enables intermittent vibration testing of the laser level by setting up a clutch assembly. It can also simulate vibration testing for different durations at different temperatures, upgrading the testing from an "idealized" single-stress test to a "realistic" comprehensive stress test. By simulating harsh real environments, coupling multiple stresses, and accelerating the excitation of potential defects, it more rigorously and efficiently verifies the mechanical structural stability, optical accuracy reliability, and electronic connection reliability of the laser level. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall frontal three-dimensional structure of the present invention;

[0021] Figure 2 This is a frontal, bottom-view, three-dimensional structural diagram of the present invention;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the back side of the present invention;

[0023] Figure 4 This is a three-dimensional bottom view of the support component and the flow guiding component of the present invention;

[0024] Figure 5 This is a three-dimensional bottom view of the fixing frame and flow guiding assembly of the present invention;

[0025] Figure 6 This is the invention Figure 5 Enlarged structural diagram at point A in the middle;

[0026] Figure 7 This is a schematic diagram of the meshing transmission structure of the first and second bevel gears of the present invention;

[0027] Figure 8 This is a three-dimensional structural diagram of the fixing frame and clutch assembly of the present invention;

[0028] Figure 9 This is the invention Figure 8 Enlarged structural diagram at point B;

[0029] Figure 10 This is a three-dimensional bottom structure diagram of the support component of the present invention;

[0030] Figure 11 This is a schematic diagram showing the connection between the air intake pipe and the heating device, cooling device and humidifying device of the present invention.

[0031] In the diagram: 1. Inspection box; 2. Control module; 3. Inspection chamber; 4. Chamber cover; 5. Air inlet pipe; 6. Air blowing hole; 7. Exhaust pipe; 8. Fixing hole; 9. Fixing frame; 10. Support assembly; 101. Support frame; 102. Telescopic column; 103. Buffer spring; 104. Connecting plate; 105. Connecting slot; 11. Drive assembly; 111. Motor; 112. Rotating shaft; 113. Limiting rod; 114. First bevel gear; 115. Limiting slot; 12. Flow guiding assembly; 121. Gearbox; 122. Rotating rod; 1 23. Second bevel gear; 124. Splined shaft; 125. Splined sleeve; 126. Fan blade; 127. Support plate; 13. Vibration assembly; 131. Support block; 132. Drive shaft; 133. Cam; 134. Vibration block; 135. Vibration groove; 14. Clutch assembly; 141. Electric telescopic rod; 142. Push-pull plate; 143. First clutch plate; 144. Second clutch plate; 500. Inlet sleeve; 501. Heating device; 502. Cooling device; 503. Humidifying device; 504. Connecting flange. Detailed Implementation

[0032] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0033] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 8 , Figure 10 and Figure 11As shown, a high and low temperature testing device for a laser level includes a testing chamber 1. The testing chamber 1 is equipped with a heating device 501, a cooling device 502, a temperature sensor, and a humidifying device 503, etc. (Heating device 501, cooling device 502, temperature sensor, and humidifying device 503 are all existing technologies and will not be described in detail here). A control module 2 is fixedly connected to the testing chamber 1, and the control module 2 is used to control the operation of the mechanism. A testing chamber 3 is provided on the testing chamber 1, and a chamber cover 4 is rotatably connected to the testing chamber 1. The chamber cover 4 is adapted to the testing chamber 3. An air inlet pipe 5 is fixedly connected to the testing chamber 1, and the air inlet pipe 5 is fixedly connected to a clean air source (clean air source is existing technology and is not shown in the figure, so it will not be described in detail). The air inlet pipe 5 is fixedly connected to the heating device 501, cooling device 502, temperature sensor, and humidifying device 503, etc. The heating device 501, cooling device 502, and humidifying device 503 are connected. An air blowing hole 6 is provided inside the inspection chamber 3, and the air blowing hole 6 is connected to the air inlet pipe 5. An exhaust pipe 7 is fixedly connected to the inspection chamber 1, and the exhaust pipe 7 is connected to the interior of the inspection chamber 3. The exhaust pipe 7 is fixedly connected to a gas purification device (the gas purification device is existing technology and is not shown in the figure, so it will not be described in detail). A fixing hole 8 is provided inside the inspection chamber 3, and a fixing bracket 9 is inserted into the fixing hole 8, making the position of the fixing bracket 9 adjustable. A support assembly 10 is installed on the top of the fixing bracket 9. The support assembly 10 is used to place a laser level. The support assembly 10 includes an insertion slot 105 opened on the top of the fixing bracket 9, and an insertion plate 104 is inserted into the insertion slot 105. The top of the insertion plate 104... A telescopic column 102 and a buffer spring 103 are fixedly connected. The buffer spring 103 is sleeved on the outer surface of the telescopic column 102. A support frame 101 is fixedly connected to the top of the telescopic column 102, and the top of the buffer spring 103 is fixedly connected to the support frame 101. The air blowing hole 6 and the air inlet pipe 5 are interconnected through a pipe. The heating device 501, the cooling device 502, and the humidifying device 503 are all installed on the side wall of the inspection box 1. The heating device 501, the cooling device 502, and the humidifying device 503 are respectively connected to the air inlet sleeve 500 through pipes. The air inlet sleeve 500 is connected to the air inlet pipe 5, and valves are provided on the pipes connecting the heating device 501, the cooling device 502, and the humidifying device 503 to the air inlet sleeve 500. The end is equipped with a docking flange 504 for connecting to a clean air source. More specifically: the adjustable temperature range of the heating device 501 is +20℃ to +85℃, with forced circulation using guide fan blades, temperature control accuracy ±0.5℃, and adjustable heating rate 0.5 to 3℃ / min. The heating core uses an insulated ceramic PTC heating element, which produces no red heat or open flame, avoiding high-temperature radiation damage to the laser instrument lens. It has a constant temperature heating power of 2.5kW and a built-in temperature control fuse for double over-temperature protection, automatically cutting off power when the temperature exceeds 88℃. The heating pipeline has independent on / off switching, and the hot and cold air ducts are isolated to prevent energy loss due to crossflow. The adjustable temperature range of the cooling device 502 is -40℃ to +20℃, with a cooling rate of 0.5 to 2℃ / min, and the low-temperature insulation temperature fluctuation is ≤±0.The compressor is a 1HP fully enclosed scroll compressor with environmentally friendly R404A refrigerant, and the lowest stable temperature drop is -42℃, meeting the requirements for extreme low temperature testing. The humidification device 503 has an adjustable humidity range of 20%RH~95%RH. The humidification principle uses electric heating dry steam humidification, heating pure water into pure water vapor, without liquid water mist, and will not form water droplets on the surface of the laser level, making it suitable for the testing of precision optical and electronic components. More specifically, the inspection chamber 3 is equipped with three sets of temperature sensors, which are fixed at the top center of the inner cavity of the inspection chamber 3 and symmetrically positioned on both sides of the bottom of the inner cavity of the inspection chamber 3. The three sets of sensors are arranged in a triangle, without detection. The sensor can measure blind spots and collect real-time temperature data from the upper, lower, left, and right areas of the chamber. Temperature signals collected by the sensors are fed back to control module 2 in real time. Control module 2 dynamically adjusts the heating power of heating device 501, the cooling output of cooling device 502, and the opening and closing range of pipeline valves to correct temperature deviations within the chamber in real time, ensuring temperature uniformity throughout the chamber and avoiding data errors caused by single-point temperature measurements. Routine factory performance testing involves 5-10 cycles of alternating high and low temperatures to quickly screen the product's routine temperature change stability. Reliability and durability testing involves 15-25 cycles of alternating high and low temperatures for life verification in harsh environments.

[0034] In operation, an external clean and dry air source is sealed and connected to the inlet sleeve 500 via a flange 504. The inlet sleeve 500 serves as the central confluence base for the multi-functional airflow of hot, cold, and humidified gases in this device. The inlet sleeve 500 connects to three independent functional pipelines, which are independent of each other and do not cross-flow. These pipelines are: a heating pipeline connecting to the heating unit 501, a cooling pipeline connecting to the cooling unit 502, and a humidification pipeline connecting to the humidification unit 503. Each of the heating, cooling, and humidification pipelines is equipped with a dedicated on / off valve, and each pipeline is also equipped with an independent electric control valve. During operation, the control module 2 precisely controls the independent opening and closing of valves in each pipeline according to the preset test conditions, so as to achieve the conduction of medium in a single channel and the complete cut-off of the other channels. Only the single-function medium of heating high-temperature airflow, cooling low-temperature airflow, and humidifying airflow is allowed to flow into the air inlet sleeve 500. After being stabilized and converged by the air inlet sleeve 500, it is uniformly delivered to the main air inlet pipe 5, which completely eliminates the problem of high-temperature airflow, low-temperature airflow, and humidifying airflow mixing and interfering with each other at the air inlet end. It achieves accurate, independent, and stable supply of temperature and humidity media required for high and low temperature and damp heat testing, and provides basic airflow guarantee for accurate environmental simulation inside the test chamber.

[0035] When in use, open the cover 4 and place the laser level on the top of the support frame 101. Close the cover 4 and set the heating rate, cooling rate, maximum temperature, minimum temperature and heat preservation time through the control module 2. Then the test chamber 1 can be started to perform high and low temperature tests on the laser level.

[0036] In addition, if the support bracket 101 is damaged, the plug plate 104 can be pulled out from the plug slot 105 by pulling, so as to repair or replace the support bracket 101.

[0037] like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, a drive assembly 11 is installed in the middle of the inspection box 1. The drive assembly 11 includes a motor 111 fixedly connected to the top of the inspection box 1. A rotating shaft 112 is fixedly connected to the output end of the motor 111. A U-shaped groove is provided on the support frame 101 to facilitate the passage of the rotating shaft 112. The U-shaped groove facilitates the repair and replacement of the support frame 101 when it is damaged. A limit rod 113 is fixedly connected to the outer surface of the rotating shaft 112. A first bevel gear 114 is slidably connected to the outer surface of the rotating shaft 112. A limit groove 115 is provided in the first bevel gear 114. The limit rod 113 is slidably connected to the limit groove 115. The limit rod 113 and the limit groove 115 ensure that after the distance between the support frames 101 is adjusted, the rotating shaft 112 can still drive the first bevel gear 114 to rotate through the limit rod 113 and the limit groove 115 when rotating. A guide for guiding gas is fixedly connected to the bottom of the fixed frame 9. The flow assembly 12 includes a gearbox 121 fixedly connected to the bottom of the fixed frame 9. A first bevel gear 114 is rotatably connected to the inner bottom of the gearbox 121. A rotating shaft 112 passes through the gearbox 121. A rotating rod 122 is rotatably connected through the gearbox 121. A second bevel gear 123 and a splined shaft 124 are fixedly connected to both ends of the rotating rod 122, respectively. The second bevel gear 123 is located inside the gearbox 121. The first bevel gear 114 meshes with the second bevel gear 123. During the process of adjusting the distance between the support brackets 101, the gearbox 121 drives the first bevel gear 114 to move upward, thereby changing the distance between the support brackets 101. A splined sleeve 125 is slidably connected to the outer surface of the splined shaft 124. A fan blade 126 is fixedly connected to the outer surface of the splined sleeve 125. A support plate 127 is fixedly connected to the bottom of the fixed frame 9. The splined sleeve 125 passes through the support plate 127 and is slidably connected to the support plate 127.

[0038] During the high and low temperature testing of the laser level, the starting motor 111 causes the rotating shaft 112 to rotate, which in turn drives the first bevel gear 114 to rotate through the limiting rod 113 and the limiting groove 115, causing the second bevel gear 123 to rotate. The rotation of the second bevel gear 123 will drive the fan blade 126 to rotate through the spline shaft 124 and the spline sleeve 125, so that the fan blade 126 guides the gas in the testing chamber 3, increases the heating and cooling rate of the testing chamber 3, and ensures the uniformity of the internal temperature of the testing chamber 3. This ensures the quality of testing all laser levels and avoids significant differences in the performance of the same batch of laser levels at different locations due to differences in the internal temperature of the testing chamber 3, which would prevent the objective evaluation of the true performance of the laser level under the target temperature environment.

[0039] like Figure 4 , Figure 5 , Figure 6 , Figure 8 and Figure 10 As shown, a vibration component 13 for causing the support assembly 10 to vibrate is fixedly connected to the bottom of the fixed frame 9. The vibration component 13 includes a support block 131 fixedly connected to the bottom of the fixed frame 9. A drive shaft 132 is rotatably connected through the support block 131. A cam 133 is fixedly connected to one end of the drive shaft 132. A vibration block 134 is fixedly connected to the bottom of the support frame 101. The vibration block 134 is positioned opposite the cam 133. A vibration groove 135 is provided through the fixed frame 9 for the vibration block 134 to move up and down. A clutch assembly 14 is fixedly connected to the fixed frame 9. The clutch assembly 14 includes an electric telescopic rod 141 fixedly connected to the fixed frame 9. A push-pull plate 142 is fixedly connected to the output end of the electric telescopic rod 141. The push-pull plate 142 is non-contactly sleeved on the end of the spline sleeve 125, allowing the spline sleeve 125 to pass through the push-pull plate 142. A first clutch plate 143 is rotatably connected to one side of the push-pull plate 142. The first clutch plate 143 is fixedly connected to the end of the spline sleeve 125. A second clutch plate 144 is fixedly connected to the other end of the drive shaft 132. The first clutch plate 143 is positioned opposite the second clutch plate 144.

[0040] It should be noted that initially, the first clutch plate 143 and the second clutch plate 144 are not in contact. During the heating, cooling, or heat preservation stages, when it is necessary to test the performance of the laser level under vibration conditions at different temperatures, the electric telescopic rod 141 is activated, causing the push-pull plate 142 to pull the first clutch plate 143 into contact with the second clutch plate 144. During this process, the spline sleeve 125 will slide along the outer surface of the spline shaft 124 but will not disengage from the spline shaft 124. At the same time, the spline sleeve 125 will also slide on the support plate 127. At this time, the rotation of the spline sleeve 125 will drive the transmission shaft 132 to rotate through the first clutch plate 143 and the second clutch plate 144, thereby causing the cam 133 to rotate. The rotation of 33 will cause the shaking block 134 to move up and down in the shaking groove 135, which in turn causes the support frame 101 to shake up and down under the action of the buffer spring 103 and the telescopic column 102, thereby causing the laser level to shake up and down. This can simulate the vibration test of the laser level under different temperatures during transportation and when it is installed on transportation devices such as automobiles. Through the comprehensive test of high and low temperature cycles and vibration, the potential defects of the laser level that will only appear in the real environment can be better exposed. At the same time, it exposes the problems that cannot be exposed under static conditions in the dynamic environment, expands the test range of the laser level, facilitates the multi-faceted evaluation of the performance of the laser level, and is convenient to use.

[0041] Furthermore, by setting up the clutch assembly 14, intermittent vibration testing of the laser level is realized, and vibration testing for different durations can be simulated at different temperatures. This upgrades the testing from an "idealized" single-stress test to a "realistic" comprehensive stress test. By simulating harsh real environments, coupling multiple stresses, and accelerating the excitation of potential defects, the mechanical structural stability, optical accuracy reliability, and electronic connection reliability of the laser level are verified more rigorously and efficiently.

[0042] A high and low temperature testing device for a laser level is described. In use, the chamber cover 4 is opened, and the laser level is placed on top of the support frame 101. The chamber cover 4 is then closed, and the heating rate, cooling rate, maximum temperature, minimum temperature, and holding time are set via the control module 2. During the high and low temperature testing of the laser level, the motor 111 is started, causing the rotating shaft 112 to rotate. This, in turn, drives the first bevel gear 114 to rotate via the limiting rod 113 and the limiting groove 115, causing the second bevel gear 123 to rotate. The rotation of the second bevel gear 123 then drives the fan blades 126 to rotate via the splined shaft 124 and the splined sleeve 125, causing the fan blades 126 to rotate. Leaf 126 guides the gas flow within the inspection chamber 3, increasing the heating and cooling rates of the chamber and ensuring temperature uniformity. This guarantees the quality of all laser levels tested and prevents significant differences in performance between different locations of the same batch of laser levels due to temperature variations within the chamber, thus ensuring an objective assessment of the laser levels' true performance under target temperature conditions. During heating, cooling, or heat preservation phases, when testing the laser levels' performance under vibration conditions at different temperatures, the electric telescopic rod 141 is activated, causing the push-pull plate 142 to pull the first clutch plate 143 against the second clutch plate 142. During the contact of the two clutch plates 144, the spline sleeve 125 slides along the outer surface of the spline shaft 124 but does not disengage from the spline shaft 124. Simultaneously, the spline sleeve 125 slides on the support plate 127. The rotation of the spline sleeve 125 will drive the transmission shaft 132 to rotate via the first clutch plate 143 and the second clutch plate 144, thereby causing the cam 133 to rotate. The rotation of the cam 133 will cause the jitter block 134 to move up and down within the jitter groove 135, thus causing the support frame 101 to jitter up and down under the action of the buffer spring 103 and the telescopic column 102, thereby causing the laser level to jitter up and down. It can simulate the vibration test of a laser level under different temperatures during transportation and when installed on transportation devices such as automobiles. Through comprehensive testing of high and low temperature cycles and vibration, it can better expose potential defects of the laser level that would only appear in real environments. At the same time, it exposes problems that cannot be exposed under static conditions in dynamic environments, expanding the testing scope of the laser level and facilitating multi-faceted evaluation of its performance. It is also convenient to use. After the testing time is reached and the testing chamber 3 returns to room temperature, the chamber cover 4 can be opened to remove the laser level and use it to evaluate its performance.

[0043] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A high and low temperature testing device for a laser level, comprising a testing box, a control module fixedly connected to the testing box, a testing chamber formed on the testing box, a chamber cover rotatably connected to the testing box and adapted to the testing chamber, an air inlet pipe fixedly connected to the testing box, an air blowing hole formed inside the testing chamber, an exhaust pipe fixedly connected to the testing box and communicating with the interior of the testing chamber, a fixing hole formed inside the testing chamber, and a fixing bracket inserted into the fixing hole, characterized in that... A support assembly is installed on the top of the fixed frame, a drive assembly is installed in the middle of the inspection box, a flow guide assembly and a shaking assembly are fixedly connected to the bottom of the fixed frame, the shaking assembly includes a support block fixedly connected to the bottom of the fixed frame, a drive shaft is rotatably connected through the support block, a cam is fixedly connected to one end of the drive shaft, a shaking block is fixedly connected to the bottom of the support assembly, the shaking block is positioned directly opposite the cam, and a shaking groove is formed through the fixed frame; A clutch assembly fixedly connected to a fixed frame, the clutch assembly including an electric telescopic rod fixedly connected to the fixed frame, a push-pull plate fixedly connected to the output end of the electric telescopic rod, a first clutch plate rotatably connected to one side of the push-pull plate, and a second clutch plate fixedly connected to the other end of the drive shaft, with the first clutch plate positioned directly opposite the second clutch plate; The flow guiding assembly includes a gearbox fixedly connected to the bottom of the fixed frame. A rotating rod is rotatably connected through the gearbox. A second bevel gear and a spline shaft are fixedly connected to both ends of the rotating rod, respectively. A spline sleeve is slidably connected to the outer surface of the spline shaft. A fan blade is fixedly connected to the outer surface of the spline sleeve. A support plate is fixedly connected to the bottom of the fixed frame.

2. The high and low temperature testing device for a laser level according to claim 1, characterized in that: The spline sleeve passes through the support plate and is slidably connected to the support plate, and the second bevel gear is located inside the gearbox.

3. The high and low temperature testing device for a laser level according to claim 1, characterized in that: The support assembly includes a slot formed on the top of the fixed frame, a plug plate inserted into the slot, a telescopic column and a buffer spring fixedly connected to the top of the plug plate, and a support frame fixedly connected to the top of the telescopic column.

4. The high and low temperature testing device for a laser level according to claim 3, characterized in that: The top of the buffer spring is fixedly connected to the support frame, the buffer spring is sleeved on the outer surface of the telescopic column, and the shaking block is fixedly connected to the bottom of the support frame.

5. A high and low temperature testing device for a laser level according to claim 3, characterized in that: The first clutch plate is fixedly connected to the end of the spline sleeve, and the push-pull plate is sleeved on the end of the spline sleeve.

6. The high and low temperature testing device for a laser level according to claim 3, characterized in that: The drive assembly includes a motor fixedly connected to the top of the inspection box, a rotating shaft fixedly connected to the output end of the motor, a limit rod fixedly connected to the outer surface of the rotating shaft, a first bevel gear slidably connected to the outer surface of the rotating shaft, a limit groove being formed in the first bevel gear, and the limit rod being slidably connected to the limit groove.

7. A high and low temperature testing device for a laser level according to claim 6, characterized in that: The first bevel gear meshes with the second bevel gear, the first bevel gear is rotatably connected to the inner bottom of the gearbox, and the rotating shaft passes through the gearbox.

Images