Comprehensive performance detection equipment for hoisting machinery

Abstract

The invention relates to the technical field of detection equipment, in particular to hoisting machinery comprehensive performance detection equipment which comprises two positioning mechanisms, a plurality of connecting rods capable of being spliced and a detection mechanism. The positioning mechanism is detachably connected with the connecting rod, the detecting mechanism is slidably arranged on the connecting rod in a sleeving mode, and the detecting mechanism can slide along the connecting rod and detect the warping degree of a web of the main beam and the horizontal bending degree of the main beam; and the positioning mechanism can be fixed on the side wall of the main beam. The detection mechanism comprises a sliding block and a distance measuring unit, the sliding block can be arranged on the connecting rod in a sliding and sleeving mode, the distance measuring unit is arranged in the sliding block, and the distance measuring unit can measure the warping degree of the web of the main beam and the horizontal curvature of the main beam. According to the equipment, the splicable rigid connecting rod is adopted to replace a traditional steel wire, the equal-height block quick locking unit and the movable distance measuring unit are combined, the detection process of the local warping degree of the web and the detection process of the horizontal bending of the main beam are combined into one, the detection efficiency is improved, and the high-altitude operation risk of detection personnel is reduced.

Description

Technical Field

[0001] The patent of this invention relates to the technical field of detection equipment, specifically, to a comprehensive performance detection equipment for lifting machinery. Background Art

[0002] The assessment of the main girder's structural condition plays a central role in comprehensive performance testing of bridge cranes. The web's local warpage, horizontal bending, and camber parameters directly determine the overall crane's service safety. Excessive web warpage can cause cover plate instability, abnormal horizontal bending can lead to rail gnawing, and attenuated camber affects load distribution. Together, these three factors constitute key indicators for early warning of structural failure. Currently, when inspectors test for local web warpage, they rely on a steel tape measure to measure the web's full height (H) and then locate it at H / 3. This method can only capture the gap between a limited number of discrete points using a 1m square ruler and a 150mm steel ruler. This results in a very low coverage area and is unable to capture continuous deformation trends. Horizontal bending detection (lateral bending) requires secondary positioning. Contour blocks are set at the large rib plate 100mm away from the upper flange plate. After tensioning a thin steel wire with a diameter of 0.49mm for leveling, a steel ruler is used to manually measure the distance between the web and the steel wire at the rib plate point by point (the bending value limit is S / 2000, where S is the span). This process must be implemented independently of the warping detection, resulting in two high-altitude operations for the same main beam. In addition, the two measurement benchmarks are separated (warping at H / 3 and bending at 100mm), the tools are redundant (7 types of instruments such as tape measure / straight ruler / ruler / steel wire / contour blocks / leveling instrument / recording board), the accuracy is inaccurate (insufficient compensation for steel wire sag and cumulative error caused by parallax of manual reading), and the efficiency is low. These systemic defects not only greatly increase the risk of high-altitude detection operations, but also make it impossible to establish a deformation correlation model due to the fragmentation of data space, seriously restricting the accurate diagnosis of the safety status of the crane structure.

[0003] A search revealed that existing crane inspection equipment primarily focuses on intelligent control (e.g., braking response, operational positioning, and electrical protection) testing. For example, a Chinese invention patent (CN116296517B) discloses a comprehensive crane performance testing device and method. This device uses laser measuring devices and laser emitters placed at both ends of the main beam to detect the arch and deflection of the main beam. The crane's braking function is tested using laser sensors, reflective strips, and a computer control program. Currently, dedicated equipment for detecting local warpage and horizontal (lateral) bending of the main beam is lacking. Consequently, assessments of the main beam's structural safety status still rely on inefficient manual methods, creating the risk of blind spots and data gaps.

[0004] Therefore, in order to solve the above problems, the applicant invented a detection device that can facilitate the detection personnel to detect the local warpage and horizontal curvature of the main beam at one time. Summary of the Invention

[0005] The purpose of the present invention is to provide a comprehensive performance testing device for lifting machinery. The device adopts a splicable rigid connecting rod to replace the traditional steel wire, combines the equal height block quick locking unit and the mobile ranging unit, and combines the detection process of the local warping of the web and the horizontal bending of the main beam into one, thereby improving the detection efficiency and reducing the risk of high-altitude operations for the testing personnel.

[0006] The present invention is implemented as follows: a comprehensive performance testing device for lifting machinery includes two positioning mechanisms, multiple spliced ​​connecting rods and a testing mechanism; the positioning mechanism and the connecting rods are detachably connected, and the testing mechanism is slidably mounted on the connecting rods. The testing mechanism can slide along the connecting rods and detect the warpage of the main beam web and the horizontal curvature of the main beam; the positioning mechanism can be fixed on the side wall of the main beam.

[0007] Furthermore, the detection mechanism includes a slider and a distance measuring unit. The slider can be slidably mounted on the connecting rod. The distance measuring unit is arranged in the slider. The distance measuring unit can measure the warping of the main beam web and the horizontal curvature of the main beam.

[0008] Furthermore, the distance measuring unit is a distance measuring sensor 1, and a transmitting end and a receiving end of the distance measuring sensor 1 are integrated in the slider.

[0009] Furthermore, the distance measuring unit includes a roller, a support block, a spring, a pressure sensor and a second distance measuring sensor; a groove is provided on the side of the slider close to the main beam, and two sliding grooves are symmetrically provided on the side wall of the slider close to the groove, the support block is slidably arranged in the sliding groove, the axis of the roller is rotatably connected to the support block, and the two ends of the spring are fixedly connected to the support block and the end of the sliding groove respectively; the second distance measuring sensor is installed in the sliding groove for measuring the distance between the support block and the end of the sliding groove; the pressure sensor is embedded in the slider, and its sensing end is fixedly connected to the end of the pressure sensor.

[0010] Furthermore, the positioning mechanism includes a contour block and a quick-locking unit; the quick-locking unit is installed on the contour block, which can quickly fix the contour block to the side wall of the main beam.

[0011] Furthermore, an adsorption chamber connected to the outside is opened in the contour block; the quick lock unit includes an air pressure tube and a screw; one end of the air pressure tube is connected to the adsorption chamber, and the screw can be detachably installed on the end of the air pressure tube through a thread.

[0012] Furthermore, a placement groove connected to the outside and a sealed transmission cavity arranged around the placement groove are opened in the contour block, and the quick lock unit includes a magnet block, a pull rod and a limit device; the magnet block is slidably set in the placement groove, and the end of the magnet block away from the opening of the placement groove is fixedly connected to the pull rod, the gripping section of the pull rod is located outside the contour block, and the pull rod is in sliding contact with the side wall of the contour block; the limit device is located in the transmission cavity to limit the position of the magnet block.

[0013] Furthermore, the limiting device includes a gear ring, multiple transmission gears, multiple limiting rods and a pressing unit; the gear ring is rotatably arranged in the transmission cavity, the ends of the multiple transmission gears are rotatably connected to the side walls of the transmission cavity, and the multiple limiting rods are distributed along the circumferential direction of the transmission cavity; the transmission gears are simultaneously engaged with the gear ring and the corresponding limiting rods; the limiting rods are slidably connected to the inside of the contour block, and the limiting end of the limiting rod is located in the placement groove for limiting the magnet block; the pressing unit is connected to one of the limiting rods for adjusting the position of the limiting rod.

[0014] Furthermore, the pressing unit includes a pressing rod, a hydraulic tube and a piston; a sealed cavity is opened in the contour block, the piston is slidably arranged in the sealed cavity, and one side of the piston is fixedly connected to one of the limit rods; one end of the hydraulic tube is connected to the sealed cavity, and one end of the pressing rod is located in the hydraulic tube and is sealed and slidably connected to the hydraulic tube.

[0015] Furthermore, a support mechanism is installed on the top of the positioning mechanism and the detection mechanism. The support mechanism includes a support rod and a support plate. The top of the support rod is fixedly connected to the bottom surface of the support plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. This equipment uses a splicable rigid connecting rod structure to replace traditional steel wires. It combines a quick-locking unit with a contour block and a high-precision mobile distance measurement unit to innovatively integrate the two detection processes of local web warpage and horizontal bending. This allows for simultaneous measurement and data output in a single installation, which not only improves detection efficiency but also reduces the safety risks of repeated high-altitude operations. At the same time, based on the continuous scanning mechanism of the distance measurement sensor or by measuring the real-time distance between the shaft support block and the slideway reference surface in the rolling state, it expands the detection area of ​​web warpage and main beam horizontal bending, completely solving the defects of sparse measurement points and insufficient coverage of traditional methods, greatly enhancing the integrity and reliability of the detection data, and providing comprehensive and accurate data support for crane structural safety assessment. 2. This equipment has a special placement slot for accommodating the magnet block inside the contour block, and a limiting device is set in the transmission cavity. The limiting device is provided with multiple limiting rods, which are respectively engaged with multiple transmission gears. When the contour block is positioned, the pressing unit is triggered by hydraulic drive to drive one of the limiting rods to move, and then the limiting ends of the multiple limiting rods are synchronously returned to the transmission cavity through gear transmission, thereby releasing the constraint on the magnet block. The magnet block is automatically adsorbed on the side wall of the main beam under the action of magnetic force, realizing rapid fixation of the entire positioning mechanism, which is easy to operate, stable and reliable. In addition, a pull rod is provided at the end of the magnet block. When disassembling, you only need to pull the pull rod to separate the magnet block from the surface of the main beam, and easily remove the contour block, realizing efficient and convenient fixing and disassembly processes; 3. This equipment has an adsorption chamber inside the contour block that is connected to the outside. The adsorption chamber is connected to the screw through an air duct. When the contour block fits against the side wall of the main beam, it only needs to rotate the screw to form a negative pressure in the adsorption chamber, and the atmospheric pressure is used to fix the contour block. The operation is simple and does not require an additional power source. When disassembling, the screw is rotated in the opposite direction to quickly restore the pressure in the chamber, and the contour block can be easily removed, achieving efficient and convenient fixing and disassembly processes. The negative pressure quick lock unit has a simple and compact structure, no complex electrical components, high reliability, easy processing and assembly, and good engineering transformation prospects. At the same time, the purely mechanical adsorption method avoids magnetic interference or surface damage, is suitable for main beams of various materials, and significantly improves the applicability and operational safety of the equipment. 4. The distance measurement unit of this equipment utilizes a composite mechanical and sensor structure: the support block connected to the detection roller is elastically connected to the end of the chute via a spring, and a high-precision pressure sensor is fixed to the end of the spring, ensuring that the roller always reliably adheres to the main beam sidewall. Simultaneously, by monitoring changes in spring pressure, the compression is indirectly calculated, thereby determining the change in distance of the main beam sidewall relative to the reference line (the splicing connecting rod). To further improve measurement accuracy, the unit also incorporates a second distance measurement sensor, with its transmitting and receiving ends located at the support block and the end of the chute, respectively. This allows for direct, real-time, and accurate detection of the support block's displacement relative to the chute reference plane, effectively overcoming the potential accuracy limitations of a pure spring-pressure sensing system, such as hysteresis, creep, and temperature drift, and achieving a combination of high reliability and high-precision measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a comprehensive performance testing device for a lifting machinery provided in Example 1 of the present invention; Figure 2 1 is a schematic structural diagram of a single connecting rod provided in Example 1 of the present invention; Figure 3 This is a side sectional view of a detection mechanism of a lifting machinery comprehensive performance detection device provided in Example 1 of the present invention when fixed on a main beam; Figure 4 This is a side sectional view of a positioning mechanism of a lifting machinery comprehensive performance testing device provided in Example 1 of the present invention when fixed on a main beam; Figure 5 yes Figure 4 Enlarged view of point A in the middle; Figure 6 is a front cross-sectional view of the positioning mechanism provided in Example 1 of the present invention; Figure 7 is a side sectional view of a detection mechanism provided in Example 2 of the present invention; Figure 8 yes Figure 7 Enlarged view of point A in the middle; Figure 9This is a side sectional view of a detection structure of a lifting machinery comprehensive performance detection device provided by Example 2 of the present invention when fixed on a main beam; Figure 10 This is a schematic structural diagram of a comprehensive performance testing device for a lifting machinery provided by Example 3 of the present invention; Figure 11 It is a side sectional view of the positioning mechanism provided in Example 3 of the present invention.

[0018] Reference numerals in the above drawings: 1. Contour block; 2. Magnet block; 3. Distance sensor 1; 4. Support rod 1; 5. Support rod 2; 6. Support plate 2; 7. Slider; 8. Connecting rod; 9. Press rod; 10. Support plate 1; 11. Upper flange plate; 12. Pull rod; 13. Hydraulic pipe; 14. Piston; 15. Limit rod; 16. Placement groove; 17. Gear ring; 18. Transmission chamber; 19. Transmission gear; 20. Sealing chamber; 21. Roller; 22. Spring; 23. Support block; 24. Slide; 25. Pressure sensor; 26. Distance sensor 2; 27. Screw; 28. Adsorption chamber; 29. ​​Air pressure pipe; 30. Main beam. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] The implementation of the present invention is described in detail below with reference to specific embodiments.

[0021] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0022] Reference Figures 1-11 The figure shows a preferred embodiment of the present invention.

[0023] Example 1: A comprehensive performance testing device for lifting machinery, such as Figures 1-6As shown, it mainly consists of two positioning mechanisms, multiple connectable connecting rods 8 and a detection mechanism; in order to prevent the detection mechanism from rotating around the connecting rod 8, the cross section of the connecting rod 8 is set to a rectangular shape in this embodiment. Figure 2 As shown, one end of each connecting rod 8 is a protrusion of the screw rod 27, and the other end is provided with an internal thread groove that matches the protrusion of the screw rod 27. When splicing the connecting rods 8, the screw rod 27 is inserted into the groove and tightened. At this time, the surfaces of the two connecting rods 8 are aligned. On the side walls of the equal-height blocks 1 of the two positioning mechanisms, the side wall of one equal-height block 1 is provided with a threaded rod protruding outward, and the other equal-height block 1 is provided with an internal thread groove. In this way, the connecting rods 8 at both ends can be connected to the equal-height blocks 1 of the two positioning mechanisms. In addition, the connecting rods 8 can be set to three lengths of 0.3m, 0.5m, and 1m. In this way, connecting rods 8 of different lengths can be selected for splicing according to the specific length between the large ribs on the main beam 30 during inspection.

[0024] The detection mechanism of this embodiment primarily consists of a slider 7 and a distance-measuring unit, the latter of which is a distance-measuring sensor 3. The slider 7 has a through-hole whose cross-sectional shape and dimensions match those of the connecting rod 8. The slider 7 slides over the connecting rod 8, creating a certain degree of damping between the slider and the connecting rod 8. The distance-measuring sensor 3 is embedded within the slider 7. It utilizes a photoelectric sensor with a single housing integrating the transmitter and receiver, preferably the SICK OD5000 from the German company SICK. Both the transmitter and receiver of this photoelectric sensor are flush with the surface of the slider 7. As the slider 7 moves along the connecting rod 8, the transmitter of the distance-measuring sensor 3 emits a modulated infrared beam, and the receiver receives the reflected light. Triangulation is then used to calculate the vertical distance between the surface of the slider 7 and the surface of the main beam 30 (web / rib).

[0025] The positioning mechanism of this embodiment is as follows Figure 4-Figure 6 , the positioning mechanism is mainly composed of a contour block 1 and a quick lock unit. A placement groove 16 with an open side is provided in the contour block 1 of this embodiment, and a transmission cavity 18 with a circular cross-section is provided inside the contour block 1. The vertical cross-section of the placement groove 16 is circular and is concentric with the annular transmission cavity 18. The quick lock unit of this embodiment is mainly composed of a magnet block 2, a pull rod 12 and a limiting device; the magnet block 2 is provided in the placement groove 16, and the end of the magnet block 2 away from the main beam 30 is fixedly connected to the pull rod 12, and the gripping portion of the pull rod 12 is located outside the contour block 1. The limiting device is located in the transmission cavity 18. As Figure 5 and Figure 6As shown, the limiting device mainly consists of a gear ring 17, six transmission gears 19, six limiting rods 15 and a pressing unit; the inner side of the gear ring 17 is a toothed surface, and the outer side is a smooth surface that is in rotational contact with the inner wall of the transmission cavity 18. The six transmission gears 19 and the six limiting rods 15 are distributed along the circumferential direction of the gear ring 17 with equal arc lengths. Each transmission gear 19 is engaged with the corresponding limiting rod 15 and the gear ring 17 at the same time. The axis of the transmission gear 19 is rotationally connected to the side wall of the transmission cavity 18. The limiting rod 15 is set through the transmission cavity 18 and the side wall of the transmission cavity 18. It is in sliding contact with the inside of the isometric block 1. In the limited state ( Figure 6 ), the limiting end of the limiting rod 15 is located in the placement groove 16 and contacts the surface of the magnet block 2. The internal material of the contour block 1 and the limiting device of this embodiment are both made of non-metallic material to ensure that the magnet block 2 can slide along the placement groove 16.

[0026] In this embodiment, the pressing unit is set above the top limit rod 15. A sealed cavity 20 is opened above the limit rod 15. The pressing unit mainly consists of a piston 14, a hydraulic pipe 13 and a pressing rod 9. The piston 14 is slidably set in the sealed cavity 20. In order to make the positioning mechanism so that the two equal-height blocks 1 are on the same horizontal plane before installation, a support rod 14 is fixedly connected to the top of the equal-height block 1, and a support plate 10 is installed on the top of the support rod 14. Figure 4 and Figure 5 As shown, one end of the hydraulic tube 13 is connected to and communicates with the bottom of the sealed cavity 20. The hydraulic tube 13 is arranged along the side wall of the contour block 1, support rod 14, and support plate 10. The pressing rod 9 is vertically inserted into the hydraulic tube 13. The pressing rod 9 is located on support plate 10, and its bottom surface and the interior of the hydraulic tube 13 form a sealed cavity 20. The chamber formed by the sealed cavity 20, the piston 14, the hydraulic tube 13, and the bottom surface of the pressing rod 9 is filled with hydraulic oil. Pressing the pressing rod 9 causes the hydraulic oil to enter the sealed cavity 20, pushing the piston 14 upward, thereby pulling one of the limit rods 15.

[0027] In this embodiment, to eliminate the downward pressure exerted by the detection mechanism on the connecting rod 8 as the detection mechanism moves along the connecting rod 8, a second support rod 5 is fixedly mounted on the top of the slider 7 of the detection mechanism, and a support plate is fixedly mounted on the top of the second support rod 5. The bottom surfaces of the first support plate 10 and the second support plate 6 are both located on the same horizontal plane.

[0028] In this embodiment, a display (not labeled in the figure) can be installed on the top surface of support plate 2 6, and an information processor (not labeled in the figure) can be installed within support rod 2 5. The display, information processor, and distance sensor 1 3 are electrically connected. Distance sensor 1 3 transmits the distance between the side wall of main beam 30 and the surface of slider 7 proximate to main beam 30 to the information processor in real time. The information processor adds the distance measured by distance sensor 1 3 to the vertical distance from the surface of slider 7 to connecting rod 8 to obtain the vertical distance between the baseline and the side wall of main beam 30. The information processor transmits the processed information to the display for real-time display.

[0029] Working Principle: When using this device for testing, the operator first selects the appropriate length and number of connecting rods 8 based on the spacing of the large ribs on the main beam 30. The slider 7 of the testing mechanism is mounted on one of the connecting rods 8, and two equal-height blocks 1 are fixed to the side walls of the large ribs at both ends of the main beam 30.

[0030] When installing, if Figure 4 As shown, the support plate 10 of the positioning mechanism is placed on the top surface of the upper flange plate 11 of the main beam 30 to ensure that the contour block 1 is tightly fitted with the side wall of the main beam 30 (the web or large rib surface). Then press the pressing rod 9 downward, and the hydraulic oil pushes the piston 14 upward, driving the corresponding limit rod 15 to move upward. Since the limit rod 15 is engaged with the transmission gear 19, the rotation of the transmission gear 19 further drives the gear ring 17 to rotate, so that all the transmission gears 19 rotate synchronously, and then drive all the limit rods 15 to move along the direction of the transmission cavity 18, so that they are separated from the magnet block 2. At this time, the magnet block 2 is firmly adsorbed on the side wall of the main beam 30 under the action of magnetic force, completing the reliable fixation of the entire positioning mechanism. After the first positioning mechanism is installed in place, the connecting rod 8 is spliced ​​in sequence and another positioning mechanism is installed. After the installation is completed, it should be ensured that the support plate 10 and the support plate 2 6 are well fitted with the upper flange plate 11.

[0031] After installation, the operator must perform initial position calibration on the display. By pushing support plate 2 (6), ranging sensor 1 (3) continuously scans and measures the web surface of main beam 30, obtaining warping deformation data (web warpage) along the entire length of the web. Simultaneously, the system simultaneously records the lateral offset at specific locations on the main ribs, which is used to calculate the horizontal curvature of main beam 30 (lateral deflection). The information processor simultaneously obtains two key parameters: web warpage distribution and horizontal deflection at specific main rib locations, significantly improving inspection efficiency and data comprehensiveness and reliability.

[0032] During disassembly, the operator only needs to pull the pull rod 12 to separate the magnet block 2 from the main beam 30, and then press the pressing rod 9 to easily remove the entire positioning mechanism.

[0033] Example 2: A comprehensive performance testing device for lifting machinery. This example provides a new distance measuring unit for the testing mechanism. Specifically, Figure 7 and Figure 8 The distance measuring unit mainly consists of a roller 21, a support block 23, a spring 22, a pressure sensor and a distance measuring sensor 26. The slider 7 of this embodiment has a groove on the surface close to the main beam 30, and the roller 21 is partially located in the groove. At the same time, a slide 24 is set on the side of the slide 24 close to the groove, and the entire distance measuring unit is located in the slide 24. The support block 23 slides along the length direction of the slide 24, and one end of the spring 22 is fixedly connected to the support block 23, and the other end is fixedly connected to the end of the slide 24. At the same time, the pressure sensor is embedded in the slider 7 and fixedly connected to the spring 22. The spring 22 is used to ensure that the roller 21 is always in close contact with the web surface, and at the same time enables the pressure sensor 25 to detect the vertical distance between the side of the main beam 30 and the connecting rod in the initial state (the distance value is the distance between the contact surface of the roller 21 and the connecting rod when the spring 22 has the maximum free length minus the actual compression of the spring 22). The distance measuring sensor 26 adopts a through-beam photoelectric sensor, preferably the Omron EE-SX671 model, which has a width of only 4.5 mm and is suitable for a narrow installation space such as the slide 24 , and is used to detect the real-time distance between the support block 23 and the end of the slide 24 .

[0034] The rest of the structure of the detection device of this embodiment is the same as that of embodiment 1 and will not be described again here.

[0035] Working Principle: To use this testing equipment, the positioning mechanism is first fixed in a designated position, allowing roller 21 to align with the sidewall of the main beam 30. The operator then calibrates the initial distance and pushes support plate 2 (6), causing roller 21 to roll along the sidewall of the main beam 30. Distance sensor 2 (26) measures the distance between support block 23 and the end of the slideway in real time. This information provides the warpage values ​​at different web locations and the horizontal bending of the main beam 30 at the main ribs, significantly improving testing efficiency and data reliability.

[0036] It should be clear that no matter what specific structure of the detection mechanism is used, as long as the distance between the baseline and the side wall of the main beam 30 can be accurately measured through the distance measuring sensor, regardless of its detection position or structural deformation method, it falls within the scope of protection of the claims of this application.

[0037] Example 3: A comprehensive performance testing device for lifting machinery. This embodiment provides a new quick lock unit structure of a positioning mechanism, such as Figure 10 and Figure 11As shown, a trumpet-shaped adsorption chamber 28 is provided within the contour block 1, connecting to the outside. A rubber layer is applied along the outer wall of the contour block 1 along the edge of the adsorption chamber 28 to prevent gaps when the contour block 1 is attached to the main beam 30. This embodiment's quick-lock unit includes an air pressure tube 29 and a screw 27. One end of the air pressure tube 29 connects to the adsorption chamber 28, while the other end passes through support rod 1 4 and support plate 1 10. The threaded section of the screw 27 is located within the air pressure tube 29 and is threadedly connected to it.

[0038] During installation, the contour block 1 is placed against the side wall of the main beam 30 and screw 27 is rotated to move it upward, thereby creating negative pressure in the adsorption chamber 28 and firmly securing the contour block 1 to the side wall of the main beam 30. During removal, screw 27 is rotated in the opposite direction to equalize the pressure in the adsorption chamber 28 with the external pressure, and the positioning mechanism can be removed.

[0039] It should be clear that no matter what specific structural form the quick-lock unit adopts, as long as it can achieve the function of quickly fixing the contour block 1 to the side wall of the main beam 30, it falls within the scope of protection of the claims of this application.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A comprehensive performance testing device for lifting machinery, characterized in that: The invention comprises two positioning mechanisms, a plurality of spliced ​​connecting rods (8) and a detection mechanism; the positioning mechanism and the connecting rod (8) are detachably connected, the detection mechanism is slidably sleeved on the connecting rod (8), the detection mechanism can slide along the connecting rod (8) and detect the warpage of the web of the main beam (30) and the horizontal curvature of the main beam (30); the positioning mechanism can be fixed on the side wall of the main beam (30).

2. A comprehensive performance testing device for lifting machinery according to claim 1, characterized in that: The detection mechanism comprises a slider (7) and a distance measuring unit. The slider (7) can be slidably sleeved on a connecting rod (8). The distance measuring unit is arranged in the slider (7). The distance measuring unit can measure the warpage of the web of the main beam (30) and the horizontal curvature of the main beam (30).

3. A comprehensive performance testing device for lifting machinery according to claim 2, characterized in that: The distance measuring unit is a distance measuring sensor 1 (3), and the transmitting end and the receiving end of the distance measuring sensor 1 (3) are integrated in the slider (7).

4. A comprehensive performance testing device for lifting machinery according to claim 2, characterized in that: The distance measuring unit comprises a roller (21), a support block (23), a spring (22), a pressure sensor (25) and a second distance measuring sensor (26); a groove is provided on a side of the slider (7) close to the main beam (30); two slide grooves (24) are symmetrically provided on the side wall of the slider (7) close to the groove; the support block (23) is slidably arranged in the slide groove (24); the axis of the roller (21) is rotatably connected to the support block (23); the two ends of the spring (22) are respectively fixedly connected to the support block (23) and the end of the slide groove (24); the second distance measuring sensor (26) is installed in the slide groove (24) for measuring the distance between the support block (23) and the end of the slide groove (24); the pressure sensor (25) is embedded in the slider (7), and its sensing end is fixedly connected to the end of the pressure sensor (25).

5. A comprehensive performance testing device for lifting machinery according to claim 1, characterized in that: The positioning mechanism comprises a contour block (1) and a quick-locking unit; the quick-locking unit is mounted on the contour block (1) and can allow the contour block (1) to be quickly fixed to the side wall of the main beam (30).

6. A comprehensive performance testing device for lifting machinery according to claim 5, characterized in that: An adsorption chamber (28) communicating with the outside is formed in the contour block (1); the quick lock unit comprises an air pressure tube (29) and a screw (27); one end of the air pressure tube (29) is communicated with the adsorption chamber (28), and the screw (27) is detachably mounted on the end of the air pressure tube (29) in the form of a thread.

7. A comprehensive performance testing device for lifting machinery according to claim 5, characterized in that: The height-equalizing block (1) is provided with a placement groove (16) communicating with the outside and a sealed transmission cavity (18) arranged around the placement groove (16); the quick lock unit comprises a magnet block (2), a pull rod (12) and a limiting device; the magnet block (2) is slidably arranged in the placement groove (16); the end of the magnet block (2) away from the opening of the placement groove (16) is fixedly connected to the pull rod (12); the gripping section of the pull rod (12) is located outside the height-equalizing block (1), and the pull rod (12) is in sliding contact with the side wall of the height-equalizing block (1); the limiting device is located in the transmission cavity (18) and is used to limit the position of the magnet block (2).

8. A comprehensive performance testing device for lifting machinery according to claim 7, characterized in that: The limiting device comprises a gear ring (17), a plurality of transmission gears (19), a plurality of limiting rods (15) and a pressing unit; the gear ring (17) is rotatably arranged in a transmission cavity (18), the ends of the plurality of transmission gears (19) are rotatably connected to the side wall of the transmission cavity (18), and the plurality of limiting rods (15) are distributed along the circumferential direction of the transmission cavity (18); the transmission gears (19) are simultaneously engaged with the gear ring (17) and the corresponding limiting rods (15); the limiting rods (15) are slidably connected to the inside of the equal height block (1), and the limiting ends of the limiting rods (15) are located in the placement groove (16) for limiting the magnet block (2); and the pressing unit is connected to one of the limiting rods (15) and is used to adjust the position of the limiting rod (15).

9. A comprehensive performance testing device for lifting machinery according to claim 8, characterized in that: The pressing unit comprises a pressing rod (9), a hydraulic pipe (13) and a piston (14); a sealing cavity (20) is opened in the equal height block (1), the piston (14) is slidably arranged in the sealing cavity (20), and one side of the piston (14) is fixedly connected to one of the limiting rods (15); one end of the hydraulic pipe (13) is communicated with the sealing cavity (20), and one end of the pressing rod (9) is located in the hydraulic pipe (13) and is sealed and slidably connected to the hydraulic pipe (13).

10. A lifting machinery comprehensive performance testing device according to any one of claims 1 to 9, characterized in that: A supporting mechanism is installed on the top of the positioning mechanism and the detection mechanism. The supporting mechanism includes a supporting rod and a supporting plate. The top of the supporting rod is fixedly connected to the bottom surface of the supporting plate.

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