Load loading device of mechanical measuring instrument

Abstract

The invention discloses a load loading device of a mechanical measuring instrument, which comprises a load loading mechanism, a positioning mechanism is arranged on the load loading mechanism, the load loading mechanism comprises a base, and a test frame is fixedly connected to the base; according to the invention, the cleaning assembly drives the rotating cavity to rotate, so that the measuring instrument reaches the testing area for testing, and in the testing process, the measuring instrument can be clamped through the clamping assembly, so that the measuring instrument can be continuously tested, the testing period is greatly shortened, and the measuring instrument can be continuously tested before entering the testing area. The locking assembly walks to the convex surface of the cam to further lock the clamping assembly, the rebound assembly slides in the track and moves by the convex surface of the track, and if the test plate is separated from the switch at the moment, an alarm can be given, so that the clamping effect can be automatically detected. And test data deviation or measuring instrument falling caused by clamping failure can be avoided.

Description

Technical Field

[0001] This invention relates to the field of mechanical measurement technology, and in particular to a load loading device for a mechanical measuring instrument. Background Technology

[0002] In the field of mechanical metrology, the compressive strength of a specimen can be tested by applying a standard load. Currently, most existing load-loading devices are single-station designs, which cannot continuously fix and test different specimens. When changing stations, specimens need to be manually disassembled and recalibrated, resulting in low efficiency. Furthermore, the lack of an automatic clamping effect detection mechanism makes it easy for test data to be distorted due to clamping loosening, and even poses a risk of specimen falling off. At the same time, the debris generated by specimen breakage during load loading is easy to fly, which not only contaminates the equipment and affects subsequent tests, but may also endanger the safety of operators, requiring manual cleaning and further reducing the continuity of testing. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing load loading devices, which are mostly single-station designs, making it impossible to continuously fix and test different specimens; lacking an automatic clamping effect detection mechanism, they are prone to distorted test data due to loose clamping, and may even lead to the risk of specimen falling off; at the same time, the debris generated by specimen breakage during load loading is easy to fly, which not only contaminates the equipment and affects subsequent tests, but may also endanger the safety of operators, requiring manual cleaning and further reducing the continuity of testing. Therefore, this invention proposes a load loading device for mechanical measuring instruments.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A load loading device for a mechanical measuring instrument includes a load loading mechanism, wherein a positioning mechanism is provided on the load loading mechanism. The load loading mechanism includes a base, on which a test frame is fixedly connected. A loading component and a cleaning component are respectively arranged above and below the test frame. Two brackets are fixedly connected to the back of the test frame, and racks are fixedly connected to both brackets. The positioning mechanism includes a rotating cavity, two gear rings of the rotating cavity meshing with two first gears of the cleaning component, cams fixedly connected to both ends of the central shaft of the rotating cavity, two disks fixedly connected to the central shaft, two guide rails fixedly connected to the disks, a track formed between the two guide rails, and multiple spring-loaded components provided, with each pair of spring-loaded components passing through the rotating cavity and connected to the test plate. Multiple clamping components and multiple locking components are provided on both sides of the rotating cavity. As the rotating cavity rotates, the locking components and clamping components move accordingly, so that the guide wheel of the locking component moves to the convex surface of the cam in advance, thereby locking the tooth plate of the locking component with the second gear of the clamping component. After the load test, the second gear drives the rack and pinion, and the fixture is removed from the fixed position.

[0005] Preferably, a collection box is provided above the base and below the cleaning component.

[0006] Preferably, the loading component includes an electric push rod, which is fixedly mounted on the test frame. One end of the electric push rod is fixedly connected to a test frame, and a ballast device is installed in the test frame.

[0007] Preferably, an arc-shaped stop is fixedly connected to the lower part of the test frame, and two alignment heads are fixedly connected to the lower part of each arc-shaped stop.

[0008] Preferably, the cleaning assembly includes a rotating shaft with a roller brush mounted on it. The rotating shaft is rotatably mounted on two side frames via two bearings. The two side frames are fixedly connected to a test frame. Two first gears are fixedly connected to the rotating shaft. One end of the rotating shaft is fixed to the output shaft of a motor, and the motor is mounted on the test frame.

[0009] Preferably, the rotating cavity includes a partition cavity, an alarm is installed on the partition cavity, two toothed rings are fixedly installed on the partition cavity, and multiple alignment ports are opened on the partition cavity.

[0010] Preferably, the diaphragm is rotatably mounted on the central shaft via bearings, and the two ends of the central shaft are respectively fixed to the two sides of the test frame.

[0011] Preferably, the clamping assembly includes a screw, on which a second gear and a handle are mounted. The screw is rotatably mounted on the cavity via a bearing. A threaded cylinder is threadedly connected to the screw, and a clamping plate is fixedly connected to one end of the threaded cylinder. The clamping plate is slidably disposed in the cavity, and a telescopic rod is fixedly connected between the clamping plate and the side wall of the cavity.

[0012] Preferably, the locking assembly includes a sleeve fixedly connected to the cavity, a guide rod slidably connected in the sleeve, a toothed plate and a guide wheel fixedly connected to both ends of the guide rod, and a first spring fixedly connected between the toothed plate and the sleeve.

[0013] Preferably, the rebound assembly includes a sliding sleeve, which is installed on the cavity, and a sliding rod is slidably connected in the sliding sleeve. The sliding rod is fixed to the test plate, the test plate overlaps with the switch, and the switch is installed in the cavity. An adjusting sleeve is slidably connected to the slide rod. A roller is provided on one side of the adjusting sleeve. A second spring is fixedly connected between the adjusting sleeve and the bottom end of the slide rod. The roller is slidably connected in a track, and the track is elliptical.

[0014] Compared with the prior art, the present invention provides a load loading device for a mechanical measuring instrument, which has the following beneficial effects: 1. The load loading device of this mechanical measuring instrument drives the rotating cavity to rotate through the cleaning component, so that the measuring instrument can reach the test area for testing. During the test, the measuring instrument can be clamped by the clamping component, so that the measuring instrument can be continuously tested, which greatly shortens the test cycle. Before the measuring instrument enters the test area, the locking component moves to the cam convex surface to further lock the clamping component. The spring component slides in the track and is moved by the convex surface of the track. If the test plate is disengaged at this time, an alarm can be triggered. The instrument can automatically detect the clamping effect to avoid test data deviation or instrument falling off due to clamping failure.

[0015] 2. The load loading device of this mechanical measuring instrument moves downwards, allowing the arc-shaped stop to fit completely into the cavity, thus forming a closed test space. This enables automatic protection during the load test, effectively blocking the flying debris generated by the breaking of the measuring instrument, preventing injury to operators and damage to equipment parts. After the test, it moves to the lower roller brush position, allowing the cleaning component to perform automatic cleaning operations, and the debris is collected in the collection box to keep the test area clean.

[0016] 3. The load loading device of this mechanical measuring instrument drives the rotating cavity to move through the cleaning component, allowing the rebound component to travel to the convex surface of the track and drive the test plate to perform a firmness test on the measuring instrument. The measuring instrument smoothly reaches the test area for testing, and the measuring instrument can be clamped during the test to ensure a continuous supply of measuring instruments. After the load test, the locking component disengages from the cam convex surface and resets. Subsequently, the clamping component and rack and pinion drive can automatically remove the fixing of the measuring instrument, allowing the residual material to fall into the collection box. Then, the cleaning component cleans it, thus performing a cyclic operation. This avoids the accumulation of impurities and ensures the cleanliness of the test area, preventing interference with subsequent clamping and testing at the workstation. This enables efficient and continuous testing operations. Attached Figure Description

[0017] Figure 1 This is a perspective view of a load loading device for a mechanical measuring instrument proposed in this invention; Figure 2 This is a rear perspective view of a load loading device for a mechanical measuring instrument proposed in this invention; Figure 3This is a perspective view of the loading component of a load loading device for a mechanical measuring instrument according to the present invention; Figure 4 This is a perspective view of the connection between the cleaning component and the rotating cavity of the load loading device of a mechanical measuring instrument according to the present invention; Figure 5 A perspective view of the cleaning component of a load loading device for a mechanical measuring instrument according to the present invention; Figure 6 A perspective view of the rotating cavity of a load loading device for a mechanical measuring instrument proposed in this invention; Figure 7 This is a perspective view of the connection between the cavity and the locking assembly of the load loading device of a mechanical measuring instrument according to the present invention. Figure 8 This is a perspective view of the rotating cavity cross-section of a load loading device for a mechanical measuring instrument proposed in this invention. Figure 9 This is a perspective view of the cavity section of a load loading device for a mechanical measuring instrument proposed in this invention. Figure 10 In this invention Figure 9 A magnified view of point A.

[0018] In the diagram: 100, Loading mechanism; 101, Base; 102, Test frame; 103, Loading assembly; 1031, Electric push rod; 1032, Test frame; 1033, Ballast equipment; 1034, Alignment head; 1035, Arc-shaped stop; 104, Collection box; 105, Bracket; 106, Cleaning assembly; 1061, Motor; 1062, Side frame; 1063, First gear; 1064, Rotating shaft; 1065, Roller brush; 107, Rack; 200, Positioning mechanism; 201, Rotating cavity; 2011, Partition cavity; 2012, Gear ring; 2013, Central shaft; 2014, Alignment port. ; 202, Clamping assembly; 2021, Handle; 2022, Screw; 2023, Threaded cylinder; 2024, Clamping plate; 2025, Second gear; 2026, Telescopic rod; 203, Locking assembly; 2031, Toothed plate; 2032, First spring; 2033, Hole sleeve; 2034, Guide wheel; 2035, Guide rod; 204, Cam; 205, Test plate; 206, Disc; 207, Guide rail; 208, Rebound assembly; 2081, Second spring; 2082, Roller; 2083, Sliding sleeve; 2084, Sliding rod; 2085, Adjusting sleeve; 209, Switch; 210, Alarm. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0021] Example 1: Refer to Figures 1-4 and Figures 6-10 A load loading device for a mechanical measuring instrument includes a load loading mechanism 100, and a positioning mechanism 200 is provided on the load loading mechanism 100. The load loading mechanism 100 includes a base 101, a test frame 102 is fixedly connected to the base 101, a loading component 103 and a cleaning component 106 are respectively arranged above and below the test frame 102, and two brackets 105 are fixedly connected to the back of the test frame 102, and a rack 107 is fixedly connected to each of the two brackets 105. The positioning mechanism 200 includes a rotating cavity 201, which includes a partition 2011. The partition 2011 is divided into multiple inner cavities, thus providing space for load testing and facilitating load testing. An alarm 210 is installed on the partition 2011. Two gear rings 2012 are fixedly installed on the partition 2011. Multiple alignment ports 2014 are opened on the partition 2011. The partition 2011 is rotatably mounted on a central shaft 2013 via bearings. The partition 2011 can maintain stable rotation through the bearings. The two ends of the central shaft 2013 are respectively fixed to the two sides of the test frame 102. The two gear rings 2012 of the rotating cavity 201... 012 meshes with two first gears 1063 of the cleaning component 106 respectively. Through the transmission between the first gears 1063 and the gear ring 2012, the rotating cavity 201 can be driven to rotate, facilitating the feeding operation. Cams 204 are fixedly connected to both ends of the central shaft 2013 of the rotating cavity 201, and two discs 206 are fixedly connected to the central shaft 2013. Two guide rails 207 are fixedly connected to the discs 206, forming a track between the two guide rails 207. Multiple spring-loaded components 208 are provided. The spring-loaded components 208 include sliding sleeves 2083, which are installed on the partition cavity 2011. 3. A sliding rod 2084 is slidably connected to the test plate 205. The test plate 205 is connected to the switch 209, which is installed in the cavity 2011. An adjusting sleeve 2085 is slidably connected to the sliding rod 2084. The adjusting sleeve 2085 can slide on the sliding rod 2084. When the test plate 205 is in contact with the measuring instrument and the measuring instrument cannot be pushed, the adjusting sleeve 2085 can be displaced on the sliding rod 2084 to ensure that the roller 2082 slides smoothly in the track. The roller 2082 is provided on one side of the adjusting sleeve 2085. The bottom of the adjusting sleeve 2085 and the sliding rod 2084 are connected. A second spring 2081 is fixedly connected between the ends. The adjusting sleeve 2085 and the slide rod 2084 can be connected together through the second spring 2081. When the roller 2082 slides in the track and drives the adjusting sleeve 2085 to move, the second spring 2081 can smoothly apply force to the slide rod 2084. The roller 2082 is slidably connected in the track, and the track is elliptical. Through the elliptical structure design of the track, the roller 2082 can smoothly drive the adjusting sleeve 2085 to move when it moves to the convex surface of the track. Every two rebound components 208 pass through the rotating cavity 201 and are connected to the test plate 205. Multiple clamping assemblies 202 and multiple locking assemblies 203 are provided on both sides of the rotating cavity 201. Each clamping assembly 202 includes a screw 2022, on which a second gear 2025 and a handle 2021 are mounted. The screw 2022 can be rotated via the handle 2021, causing the screw 2022 to engage with the threaded cylinder 2023 via a threaded drive. This allows the clamping plate 2024 to clamp and fix the measuring instrument. The screw 2022 is rotatably mounted on the partition cavity 2011 via bearings, which maintain stable rotation. It can stably transmit power with the threaded cylinder 2023. The threaded cylinder 2023 is threadedly connected to the screw 2022. One end of the threaded cylinder 2023 is fixedly connected to the clamping plate 2024. The clamping plate 2024 is slidably disposed in the cavity 2011, and a telescopic rod 2026 is fixedly connected between the clamping plate 2024 and the side wall of the cavity 2011. The telescopic rod 2026 can ensure the stable extension and retraction of the clamping plate 2024. The locking assembly 203 includes a hole sleeve 2033, which is fixedly connected to the cavity 2011. A guide rod 2035 is slidably connected in the hole sleeve 2033. The through-hole sleeve 2033 allows the guide rod 2035 to slide smoothly, enabling the toothed plate 2031 to mesh smoothly with the second gear 2025. The two ends of the guide rod 2035 are respectively fixedly connected to the toothed plate 2031 and the guide wheel 2034. The guide wheel 2034 travels to the convex surface of the cam 204, allowing the guide wheel 2034 to drive the guide rod 2035 and the toothed plate 2031 to move. The toothed plate 2031 locks with the second gear 2025, thereby locking the clamping assembly 202. A first spring 2032 is fixedly connected between the toothed plate 2031 and the through-hole sleeve 2033. A spring 2032 can drive the guide rod 2035 to reset, causing the toothed plate 2031 to separate from the second gear 2025, thereby removing the lock on the clamping assembly 202. By rotating the rotating cavity 201, the locking assembly 203 and the clamping assembly 202 move together, causing the guide wheel 2034 of the locking assembly 203 to move to the convex surface of the cam 204 in advance, thereby locking the toothed plate 2031 of the locking assembly 203 with the second gear 2025 of the clamping assembly 202. After the load test, the second gear 2025 drives the rack 107, and the fixture is removed.

[0022] In this embodiment: the cleaning component 106 drives the rotating cavity 201 to rotate, so that the measuring instrument can reach the test area for testing. During the test, the measuring instrument can be clamped by the clamping component 202, so that the measuring instrument can be continuously tested, greatly shortening the test cycle. Before the measuring instrument enters the test area, the guide wheel 2034 moves to the convex surface of the cam 204, and the guide rod 2035 drives the toothed plate 2031 to mesh and lock with the second gear 2025, thereby locking the clamping component 202. The roller 2082 slides in the track and is moved by the convex surface of the track, so that the roller 2082 drives the slide rod 2084 to move through the first spring 2032. If the slide rod 2084 drives the test plate 205 to disengage from the switch 209, an alarm can be triggered. This can automatically detect the clamping effect and avoid test data deviation or measuring instrument falling off due to clamping failure.

[0023] Example 2: Refer to Figure 3 and Figure 5 A load loading device for a mechanical measuring instrument includes a loading assembly 103, which includes an electric push rod 1031. The electric push rod 1031 is fixedly mounted on a test frame 102. One end of the electric push rod 1031 is fixedly connected to a test frame 1032. The test frame 1032 can protect the test area to prevent residual material from splashing, and the test frame 1032 is equipped with an observation window for easy observation of the loading test. A ballast device 1033 is installed in the test frame 1032. The overload device 1033 can apply pressure to the measuring instrument, thereby enabling the loading test operation. An arc-shaped stop 1035 is fixedly connected to the lower part of the test frame 1032. Two alignment heads 1034 are fixedly connected to the lower part of the arc-shaped stop 1035. The alignment head 1034 engages with the alignment port 2014 to achieve the alignment purpose. A collection box 104 is provided above the base 101 and below the cleaning component 106. The collection box 104 can collect residual materials. The cleaning assembly 106 includes a rotating shaft 1064, on which a roller brush 1065 is mounted. The rotating shaft 1064 is rotatably mounted on two side frames 1062 via two bearings. The two side frames 1062 are fixedly connected to the test frame 102. Two first gears 1063 are fixedly connected to the rotating shaft 1064. One end of the rotating shaft 1064 is fixed to the output shaft of the motor 1061, which is mounted on the test frame 102.

[0024] In this embodiment: the test frame 1032 is pushed downward by the electric push rod 1031, so that the arc-shaped stop 1035 can be completely fitted with the cavity 2011, thereby forming a closed test space. This enables automatic protection during the loading test, effectively blocking the flying debris generated by the breaking of the measuring instrument, avoiding injury to the operator and damage to the equipment parts. After the test, it moves to the position of the lower roller brush 1065, so that the motor 1061 drives the roller brush 1065 to rotate through the rotating shaft 1064. The roller brush 1065 realizes automatic cleaning operation, and the residual material enters the collection box 104 for collection, keeping the test area clean.

[0025] Example 3: Reference Figures 1-2 , Figure 4 and Figures 6-8 A load loading device for a mechanical measuring instrument includes a load loading mechanism 100. The load loading mechanism 100 includes a base 101. A test frame 102 is fixedly connected to the base 101. A loading component 103 and a cleaning component 106 are respectively arranged above and below the test frame 102. Two supports 105 are fixedly connected to the back of the test frame 102. A rack 107 is fixedly connected to each of the two supports 105. The positioning mechanism 200 includes a rotating cavity 201. Two gear rings 2012 of the rotating cavity 201 mesh with two first gears 1063 of the cleaning component 106 respectively. Cams 204 are fixedly connected to both ends of the central shaft 2013 of the rotating cavity 201. Two discs 206 are fixedly connected to the central shaft 2013. Two guide rails 207 are fixedly connected to the discs 206. A track is formed between the two guide rails 207. Multiple spring-loaded components 208 are provided. Every two spring-loaded components 208 pass through the rotating cavity 201 and are connected to the test plate 205. Multiple clamping components 202 and multiple locking components 203 are provided on both sides of the rotating cavity 201. When the rotating cavity 201 rotates, the locking components 203 and clamping components 202 move accordingly, so that the guide wheel 2034 of the locking component 203 moves to the convex surface of the cam 204 in advance, thereby locking the toothed plate 2031 of the locking component 203 with the second gear 2025 of the clamping component 202. After the loading test, the second gear 2025 is driven by the rack 107, and the fixture is removed.

[0026] In this embodiment: the cleaning component 106 drives the rotating cavity 201 to move, causing the springback component 208 to travel to the convex surface of the track, which can drive the test plate 205 to perform a firmness test on the measuring instrument. The measuring instrument smoothly reaches the test area for testing, and the measuring instrument can be clamped during the test to ensure a continuous supply of measuring instruments. After loading and testing, the locking component 203 disengages from the convex surface of the cam 204 and resets. Then, the clamping component 202 and the rack 107 drive to automatically remove the fixing of the measuring instrument, allowing the residual material to fall into the collection box 104. Then, the cleaning component 106 cleans it, thus performing a cyclic operation. This avoids residual impurities and ensures the cleanliness of the test area, thereby avoiding affecting the clamping and testing of subsequent stations. This enables efficient and continuous testing operations.

[0027] Working principle: During the loading test of the measuring instrument, the screw 2022 is rotated by the operating handle 2021. The screw 2022 drives the threaded cylinder 2023 to move, so that the clamping plate 2024 clamps the measuring instrument. Then, the motor 1061 is started to drive the rotating shaft 1064 to rotate, so that the rotating shaft 1064 drives the first gear 1063 to drive the gear ring 2012. The gear ring 2012 drives the cavity 2011 to rotate. The cavity 2011 drives the locking component 203 and the spring component 208 to move, so that the guide wheel 2034 moves to the convex surface of the cam 204, so that the guide wheel 2034 drives the guide rod 2035 to move. The guide rod 2035 drives the first spring 2032 to deform, and drives the gear plate 2031 to mesh and lock with the second gear 2025. Subsequently, the roller 2082 moves to the convex surface of the track. If the roller 2082 directly drives the slide bar 2084 to move through the second spring 2081, causing the test plate 205 to separate from the switch 209, the alarm 210 can be triggered to allow the staff to readjust. If the test plate 205 remains in place, the measuring instrument can be transported to the test area. After the measuring instrument arrives at the test area, the electric push rod 1031 pushes down the test frame 1032, so that the alignment head 1034 and the alignment port 2014 are aligned. The arc-shaped stop 1035 fits into the cavity 2011. At this time, the ballast equipment 1033 performs a loading test on the measuring instrument. After the loading test, the clamping operation of the measuring instrument can be repeated to ensure continuous supply. After the test, the loading component 103 resets upward, causing the cavity 2011 to continue rotating and the guide wheel 2034 to move away from the convex surface of the cam 204. At this time, the first spring 2032 drives the guide rod 2035 to reset, causing the toothed plate 2031 to separate from the second gear 2025. Subsequently, the second gear 2025 drives the rack 107 to drive the screw 2022 to drive the threaded cylinder 2023, causing the clamping plate 2024 to loosen and be fixed, allowing the residual material to fall into the collection box 104. Then, the test area passes through the roller brush 1065, which is driven to rotate by the rotating shaft 1064 for cleaning. After cleaning, the test operation can be repeated.

[0028] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A load loading device for a mechanical measuring instrument, comprising a load loading mechanism (100), characterized in that, The load loading mechanism (100) is provided with a positioning mechanism (200). The load loading mechanism (100) includes a base (101), on which a test frame (102) is fixedly connected. A loading component (103) and a cleaning component (106) are respectively arranged above and below the test frame (102). Two supports (105) are fixedly connected to the back of the test frame (102), and racks (107) are fixedly connected to both supports (105). The positioning mechanism (200) includes a rotating cavity (201), the two gear rings (2012) of the rotating cavity (201) mesh with the two first gears (1063) of the cleaning component (106) respectively, the two ends of the central shaft (2013) of the rotating cavity (201) are fixedly connected to cams (204), and two discs (206) are fixedly connected on the central shaft (2013). Two guide rails (207) are fixedly connected on the discs (206), a track is formed between the two guide rails (207), and multiple spring-loaded components (208) are provided. Every two spring-loaded components (208) pass through the rotating cavity (201) and are connected to the test plate (205). Multiple clamping components (202) and multiple locking components (203) are provided on both sides of the rotating cavity (201). By rotating the rotating cavity (201), the locking components (203) and clamping components (202) move accordingly, so that the guide wheel (2034) of the locking component (203) moves to the convex surface of the cam (204) in advance, thereby locking the toothed plate (2031) of the locking component (203) with the second gear (2025) of the clamping component (202). After the loading test, the second gear (2025) is driven by the rack (107) and the fixture is removed.

2. The load loading device for a mechanical measuring instrument according to claim 1, characterized in that, A collection box (104) is provided above the base (101) and below the cleaning assembly (106).

3. The load loading device for a mechanical measuring instrument according to claim 1, characterized in that, The loading component (103) includes an electric push rod (1031), which is fixedly mounted on the test frame (102). One end of the electric push rod (1031) is fixedly connected to a test frame (1032), and a ballast device (1033) is installed in the test frame (1032).

4. The load loading device for a mechanical measuring instrument according to claim 3, characterized in that, An arc-shaped stop (1035) is fixedly connected to the bottom of the test frame (1032), and two alignment heads (1034) are fixedly connected to the bottom of each arc-shaped stop (1035).

5. The load loading device for a mechanical measuring instrument according to claim 1, characterized in that, The cleaning assembly (106) includes a rotating shaft (1064) on which a roller brush (1065) is mounted. The rotating shaft (1064) is rotatably mounted on two side frames (1062) via two bearings. The two side frames (1062) are fixedly connected to the test frame (102). Two first gears (1063) are fixedly connected to the rotating shaft (1064). One end of the rotating shaft (1064) is fixed to the output shaft of a motor (1061), which is mounted on the test frame (102).

6. The load loading device for a mechanical measuring instrument according to claim 1, characterized in that, The rotating cavity (201) includes a partition cavity (2011), an alarm (210) is installed on the partition cavity (2011), two toothed rings (2012) are fixedly installed on the partition cavity (2011), and multiple alignment ports (2014) are opened on the partition cavity (2011).

7. The load loading device for a mechanical measuring instrument according to claim 6, characterized in that, The cavity (2011) is rotatably mounted on the central shaft (2013) via bearings, and the two ends of the central shaft (2013) are respectively fixed to the two sides of the test frame (102).

8. The load loading device for a mechanical measuring instrument according to claim 6, characterized in that, The clamping assembly (202) includes a screw (2022), on which a second gear (2025) and a handle (2021) are mounted. The screw (2022) is rotatably mounted on the cavity (2011) via a bearing. A threaded cylinder (2023) is threadedly connected to the screw (2022). One end of the threaded cylinder (2023) is fixedly connected to a clamping plate (2024). The clamping plate (2024) is slidably disposed in the cavity (2011), and a telescopic rod (2026) is fixedly connected between the clamping plate (2024) and the side wall of the cavity (2011).

9. The load loading device for a mechanical measuring instrument according to claim 8, characterized in that, The locking assembly (203) includes a sleeve (2033), which is fixedly connected to the cavity (2011). A guide rod (2035) is slidably connected in the sleeve (2033). A toothed plate (2031) and a guide wheel (2034) are fixedly connected to both ends of the guide rod (2035). A first spring (2032) is fixedly connected between the toothed plate (2031) and the sleeve (2033).

10. A load loading device for a mechanical measuring instrument according to claim 6, characterized in that, The rebound assembly (208) includes a sliding sleeve (2083), which is installed on the cavity (2011). A sliding rod (2084) is slidably connected in the sliding sleeve (2083). The sliding rod (2084) is fixed to the test plate (205). The test plate (205) overlaps with the switch (209), which is installed in the cavity (2011). An adjusting sleeve (2085) is slidably connected to the slide rod (2084). A roller (2082) is provided on one side of the adjusting sleeve (2085). A second spring (2081) is fixedly connected between the adjusting sleeve (2085) and the bottom end of the slide rod (2084). The roller (2082) is slidably connected in the track, and the track is elliptical.

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