A comprehensive performance detection device for hoisting machinery

Abstract

The present application relates to the technical field of detection equipment, and specifically relates to a hoisting machinery comprehensive performance detection equipment, which comprises two positioning mechanisms, a plurality of splicable connecting rods and a detection mechanism; the positioning mechanisms are detachably connected with the connecting rods, the detection mechanism is slidably sleeved on the connecting rods, the detection mechanism can slide along the connecting rods and detect the warping degree of the web plate of the main beam and the horizontal bending degree of the main beam; the positioning mechanisms can be fixed on the side walls of the main beam. The detection mechanism comprises a sliding block and a distance measuring unit, the sliding block is slidably sleeved on the connecting rods, the distance measuring unit is arranged in the sliding block, and the distance measuring unit can measure the warping degree of the web plate of the main beam and the horizontal bending degree of the main beam. The equipment uses spicable rigid connecting rods to replace traditional steel wires, combines the equal-height block quick-locking unit and the movable distance measuring unit, integrates the detection processes of the local warping degree of the web plate and the horizontal bending of the main beam, improves the detection efficiency, and reduces the risk of high-altitude operation of the detection personnel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of detection equipment, in particular to a hoisting machinery comprehensive performance detection equipment. BACKGROUND

[0002] In the comprehensive performance detection of the bridge crane, the main beam structure state evaluation occupies a core position, and the local web buckling, horizontal bending and camber parameters directly determine the service safety of the whole machine. The web buckling exceeding the standard induces the cover plate instability, the abnormal horizontal bending leads to the rail biting accident, and the camber decay affects the load uniformity, which are the key indicators of the structure failure warning. At present, when the detection personnel detects the local web buckling, they rely on the steel tape to measure the web full height H and then position at H / 3, and only through the 1m ruler and 150mm steel ruler to obtain the gap value of the limited discrete points, so the detection coverage area is extremely low and the continuous deformation trend cannot be captured. The horizontal bending detection (side bending) needs to be positioned twice, and the equal height block is set at the large rib plate 100mm away from the upper flange plate, and after the 0.49mm thin steel wire is tensioned and leveled, the distance between the rib plate and the steel wire (bending value limit S / 2000, S is the span) is measured point by point by manual steel ruler. This process needs to be implemented independently of the buckling detection, which leads to two high-altitude operations for the same main beam, and the two measurement references are separated (H / 3 buckling and 100mm bending), the tools are redundant (7 types of instruments such as tape, ruler, steel wire, equal height block, leveling instrument, recording board, etc.), the precision is inaccurate (accumulative error caused by insufficient compensation of steel wire sagging and manual reading parallax), and the efficiency is low. The systematic defects not only greatly increase the risk of high-altitude detection operation, but also cannot establish the deformation correlation model due to the space fragmentation of the data, which seriously restricts the accurate diagnosis of the structural safety state of the crane.

[0003] Through retrieval, it is found that the existing crane detection equipment is mainly focused on the design of intelligent control (such as brake response, running positioning, electrical protection) detection, such as the crane comprehensive performance detection device and method disclosed in the Chinese invention patent (CN116296517B), which detects the camber and deflection of the main beam through the laser measuring device and laser emitter placed at both ends of the main beam. The brake function of the crane is detected through the laser sensor, reflective strip and control program of the computer. At present, there is no special equipment for local buckling and horizontal bending (side bending) detection of the main beam. The evaluation of the structural safety state of the main beam still relies on the low-efficiency manual means, and there is a risk of detection blind area and data fault.

[0004] Therefore, in view of the above problems, the applicant has invented a detection equipment which can conveniently detect the local buckling and horizontal bending of the main beam by the detection personnel at one time. SUMMARY

[0005] The purpose of the present application is to provide a hoisting machinery comprehensive performance detection equipment, which uses spliced rigid connecting rods to replace traditional steel wires, combines the equal-height block quick locking unit and the mobile distance measuring unit, combines the detection processes of the local warping of the web plate and the horizontal bending of the main beam, improves the detection efficiency, and reduces the risk of high-altitude operation of the detection personnel.

[0006] The present application is implemented as follows: a hoisting machinery comprehensive performance detection equipment comprises two positioning mechanisms, a plurality of spliced connecting rods, and a detection mechanism; the positioning mechanisms are detachably connected with the connecting rods, and the detection mechanism is slidably sleeved on the connecting rods; the detection mechanism can slide along the connecting rods and detect the warping of the web plate of the main beam and the horizontal bending of the main beam; and the positioning mechanisms can be fixed to the side walls of the main beam.

[0007] Further, the detection mechanism comprises a sliding block and a distance measuring unit; the sliding block is slidably sleeved on the connecting rods; and the distance measuring unit is arranged in the sliding block and can measure the warping of the web plate of the main beam and the horizontal bending of the main beam.

[0008] Further, the distance measuring unit is a distance measuring sensor one, and the transmitting end and the receiving end of the distance measuring sensor one are integrated in the sliding block.

[0009] Further, the distance measuring unit comprises a roller, a supporting block, a spring, a pressure sensor, and a distance measuring sensor two; a groove is formed in the side of the sliding block close to the main beam; two sliding grooves are symmetrically formed in the side wall of the sliding block close to the groove; the supporting block is slidably arranged in the sliding groove; the axis of the roller is rotatably connected with the supporting block; and the two ends of the spring are fixedly connected with the supporting block and the end portion of the sliding groove, respectively; the distance measuring sensor two is installed in the sliding groove and used for measuring the distance between the supporting block and the end portion of the sliding groove; and the pressure sensor is embedded in the sliding block, and the sensing end thereof is fixedly connected with the end portion of the pressure sensor.

[0010] Further, the positioning mechanism comprises an equal-height block and a quick locking unit; the quick locking unit is installed on the equal-height block and can quickly fix the equal-height block to the side wall of the main beam.

[0011] Further, an adsorption cavity in communication with the outside is formed in the equal-height block; the quick locking unit comprises an air pressure pipe and a screw rod; one end of the air pressure pipe is in communication with the adsorption cavity; and the screw rod is detachably installed on the end portion of the air pressure pipe in the form of threads.

[0012] Further, a placing groove in communication with the outside and a sealing transmission cavity arranged around the placing groove are formed in the equal-height block; the quick locking unit comprises a magnet block, a pull rod, and a limiting device; the magnet block is slidably arranged in the placing groove; one end of the magnet block away from the opening of the placing groove is fixedly connected with the pull rod; the holding section of the pull rod is located outside the equal-height block; the pull rod is in sliding contact with the side wall of the equal-height block; and the limiting device is located in the transmission cavity and used for limiting the position of the magnet block.

[0013] Further, the limiting device comprises a gear ring, a plurality of transmission gears, a plurality of limiting rods and a pressing unit; the gear ring is rotationally arranged in the transmission cavity, the end portions of the plurality of transmission gears are rotationally connected with the side wall of the transmission cavity, and the plurality of limiting rods are distributed along the circumferential direction of the transmission cavity; the transmission gears are meshed with the gear ring and the corresponding limiting rods; the limiting rods are slidingly connected with the internal equal-height blocks, and the limiting ends of the limiting rods are located in the placing grooves for limiting the magnet blocks; the pressing unit is connected with one of the limiting rods for adjusting the position of the limiting rod.

[0014] Further, the pressing unit comprises a pressing rod, a hydraulic pipe and a piston; a sealed cavity is formed in the equal-height block, the piston is slidingly arranged in the sealed cavity, and one side surface of the piston is fixedly connected with one of the limiting rods; one end of the hydraulic pipe is in communication with the sealed cavity, and one end of the pressing rod is located in the hydraulic pipe and is sealingly and slidingly connected with the hydraulic pipe.

[0015] Further, the top portions of the positioning mechanism and the detection mechanism are provided with support mechanisms, and the support mechanisms comprise support rods and support plates, and the top portions of the support rods are fixedly connected with the bottom surfaces of the support plates.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] 1. The device replaces the traditional steel wire with a splicable rigid connecting rod structure, combines the equal-height block quick locking unit and the high-precision movable distance measuring unit, innovatively integrates the local web partial camber and the horizontal bending two detection processes, realizes the synchronous measurement and data output in a single installation, improves the detection efficiency, reduces the safety risk of high-altitude repeated operation, expands the detection area of the web camber and the main beam horizontal bending amount based on the continuous scanning mechanism of the distance measuring sensor or by measuring the real-time distance between the shaft support block and the sliding groove reference surface in the rolling state, completely solves the defects of the sparse measuring points and insufficient coverage of the traditional method, greatly enhances the integrity and reliability of the detection data, and provides comprehensive and accurate data support for the crane structure safety evaluation;

[0018] 2. The device is provided with a special placing groove for accommodating the magnet block in the internal equal-height block, and a limiting device is arranged in the transmission cavity. The limiting device is provided with a plurality of limiting rods which are respectively meshed and connected with a plurality of transmission gears. When the equal-height block is positioned, the pressing unit is triggered by a hydraulic drive mode, one of the limiting rods is driven to move, and then the limiting ends of the plurality of limiting rods are synchronously withdrawn into the transmission cavity through gear transmission to release 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, the quick fixing of the entire positioning mechanism is realized, the operation is simple and stable and reliable. In addition, a pull rod is arranged at the end of the magnet block, and the magnet block can be separated from the surface of the main beam by simply pulling the pull rod when disassembling, so that the equal-height block can be easily taken down, and the fixing and disassembling process is efficient and convenient;

[0019] 3, The equipment is provided with an adsorption cavity communicated with the outside in the equal-height block, and the adsorption cavity is connected with the screw rod through a gas guide pipe. When the equal-height block is attached to the side wall of the main beam, only the screw rod needs to be rotated to form negative pressure in the adsorption cavity, and the atmospheric pressure is used to fix the equal-height block, which is simple to operate and does not need an additional power source. When disassembling, the screw rod is reversely rotated to rapidly restore the pressure in the cavity, so that the equal-height block can be easily removed, and the fixing and disassembling process is efficient and convenient. The negative pressure quick locking unit is simple and compact in structure, has no complex electrical components, is high in reliability, is easy to process, manufacture and assemble, and has a good engineering transformation prospect; meanwhile, the pure mechanical adsorption mode avoids magnetic interference or surface damage, and is suitable for main beams made of various materials, so that the applicability and operation safety of the equipment are significantly improved;

[0020] 4, The distance measuring unit of the equipment adopts a mechanical and sensing composite structure: the support block connected with the detection roller is elastically connected with the end part of the sliding groove through a spring, and a high-precision pressure sensor is fixed at the end part of the spring, so that the roller can be reliably attached to the side wall of the main beam at all times, and the compression amount of the spring is indirectly calculated by monitoring the pressure change of the spring, and then the distance change of the side wall of the main beam relative to the reference line (splicing connecting rod) is obtained. In order to further improve the measurement accuracy, the distance measuring sensor two is additionally arranged, and the emitting end and the receiving end of the distance measuring sensor two are arranged on the support block and the end part of the sliding groove respectively, so that the displacement of the support block relative to the reference surface of the sliding groove is directly and real-timely detected, and the accuracy limitations such as hysteresis, creep and temperature drift of the pure spring-pressure sensor system are effectively overcome, so that the combination of high reliability and high accuracy measurement is realized. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic view of a hoisting machinery comprehensive performance detection equipment provided by embodiment 1 of the present application;

[0022] Figure 2 is a structural schematic view of a single connecting rod provided by embodiment 1 of the present application;

[0023] Figure 3 is a side sectional view of a detection mechanism when the hoisting machinery comprehensive performance detection equipment provided by embodiment 1 of the present application is fixed on the main beam;

[0024] Figure 4 is a side sectional view of a positioning mechanism when the hoisting machinery comprehensive performance detection equipment provided by embodiment 1 of the present application is fixed on the main beam;

[0025] Figure 5 is Figure 4 is an enlarged view of A in FIG. 8;

[0026] Figure 6 is a front sectional view of the positioning mechanism provided by embodiment 1 of the present application;

[0027] Figure 7is a side sectional view of the detection mechanism provided by embodiment 2 of the present application;

[0028] Figure 8 is Figure 7 is an enlarged view at A in figure 6;

[0029] Figure 9 is a side sectional view of the detection structure when the hoisting machinery comprehensive performance detection equipment is fixed on the main beam provided by embodiment 2 of the present application;

[0030] Figure 10 is a structural schematic view of the hoisting machinery comprehensive performance detection equipment provided by embodiment 3 of the present application;

[0031] Figure 11 is a side sectional view of the positioning mechanism provided by embodiment 3 of the present application.

[0032] Reference signs involved in the above figures:

[0033] 1, equal height block; 2, magnet block; 3, distance measuring sensor one; 4, support rod one; 5, support rod two; 6, support plate two; 7, sliding block; 8, connecting rod; 9, pressing rod; 10, support plate one; 11, upper flange plate; 12, pull rod; 13, hydraulic pipe; 14, piston; 15, limiting rod; 16, placing groove; 17, gear ring; 18, transmission cavity; 19, transmission gear; 20, sealing cavity; 21, roller; 22, spring; 23, support block; 24, sliding groove; 25, pressure sensor; 26, distance measuring sensor two; 27, screw rod; 28, adsorption cavity; 29, air pressure pipe; 30, main beam. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0035] The implementation of the present application is described in detail below in combination with specific examples.

[0036] The same or similar reference signs in the drawings of the present example correspond to the same or similar parts; in the description of the present application, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "left", "right" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the position relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation of the present patent, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0037] Referring to Figures 1-11 the preferred embodiments provided by the present application.

[0038] Embodiment 1: A hoisting machinery comprehensive performance detection device, as Figures 1-6 shown, mainly consists of two positioning mechanisms, a plurality of splicing connecting rods 8 and a detection mechanism; in order to avoid the detection mechanism rotating around the connecting rod 8, the cross section of the connecting rod 8 is set to be rectangular. As Figure 2 shown, one end of each connecting rod 8 is a screw rod 27 protrusion, and the other end is provided with an internal thread groove matched with the screw rod 27 protrusion; when the connecting rods 8 are spliced, the screw rod 27 is inserted into the groove and tightened, at which time the surfaces of the two connecting rods 8 are aligned. On the side walls of the two positioning mechanisms, the side wall of one of the equal height blocks 1 is provided with an outwardly protruding threaded rod, and the other equal height block 1 is provided with an internal thread groove, so that the connecting rods 8 at both ends can be connected with the equal height blocks 1 of the two positioning mechanisms. In addition, the connecting rod 8 can be provided in three lengths of 0.3m, 0.5m and 1m, so that different lengths of connecting rods 8 can be selected according to the specific length between the large rib plates on the main beam 30 during detection.

[0039] The detection mechanism of the present embodiment mainly consists of a sliding block 7 and a distance measuring unit, wherein the distance measuring unit is a distance measuring sensor 3. The sliding block 7 is provided with a through hole matched with the cross section shape and size of the connecting rod 8, and the sliding block 7 is slidingly sleeved on the connecting rod 8 and has a certain damping between the connecting rod 8. The distance measuring sensor 3 is embedded in the sliding block 7, and the distance measuring sensor 3 selects an optical sensor with the transmitting end and the receiving end integrated in one shell, preferably SICK OD5000 of SICK Company in Germany; the transmitting end and the receiving end of the optical sensor are flush with the surface of the sliding block 7, and when the sliding block 7 moves along the connecting rod 8, the transmitter of the distance measuring sensor 3 emits a modulated infrared light, and the receiver receives the reflected light, and the vertical distance between the surface of the sliding block 7 and the surface of the main beam 30 (web / large rib plate) is calculated by the triangulation method.

[0040] The positioning mechanism of the present embodiment is as Figures 4-6 shown, and mainly consists of an equal height block 1 and a quick lock unit. The equal height block 1 of the present embodiment is internally provided with a one-side-opened placing groove 16, and a transmission cavity 18 with a circular cross section is arranged inside the equal height block 1. The vertical cross section of the placing groove 16 is circular, and the same as the center of the annular transmission cavity 18. The quick lock unit of the present embodiment mainly consists of a magnet block 2, a pull rod 12 and a limiting device; the magnet block 2 is arranged in the placing groove 16, and the end of the magnet block 2 away from the main beam 30 is fixedly connected with the pull rod 12, and the holding part of the pull rod 12 is located outside the equal height 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 tooth surface, and the outer side is a smooth surface and in rotational contact with the inner side 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 length. Each transmission gear 19 is in meshing contact with the corresponding limiting rod 15 and the gear ring 17, and the shaft of the transmission gear 19 is in rotational connection with the side wall of the transmission cavity 18. The limiting rod 15 is arranged through the transmission cavity 18 and the side wall of the transmission cavity 18, and is in sliding contact with the inside of the equal-height block 1. In the limiting state (as shown in Figure 6 ), the limiting end of the limiting rod 15 is in contact with the surface of the magnet block 2 in the placement groove 16. The internal material of the equal-height block 1 and the limiting device in this embodiment are both made of non-metallic materials, which ensures that the magnet block 2 can slide along the placement groove 16.

[0041] In this embodiment, the pressing unit is arranged above the top limiting rod 15, and a sealing cavity 20 is opened above the limiting rod 15. The pressing unit mainly consists of a piston 14, a hydraulic pipe 13 and a pressing rod 9. The piston 14 is slidingly arranged in the sealing cavity 20. In order to make the positioning mechanism keep the two equal-height blocks 1 at the same horizontal plane before installation, a support rod 4 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 4. As shown in Figure 4 and Figure 5 , one end of the hydraulic pipe 13 is connected and communicated with the bottom of the sealing cavity 20. The hydraulic pipe 13 is arranged along the side wall of the equal-height block 1, the support rod 4 and the support plate 10. The pressing rod 9 is vertically inserted into the hydraulic pipe 13, and the pressing rod 9 is located on the support plate 10, and the bottom surface forms a sealing cavity 20 with the inside of the hydraulic pipe 13. The cavity formed by the sealing cavity 20, the piston 14, the hydraulic pipe 13 and the bottom surface of the pressing rod 9 is filled with hydraulic oil. In this way, by pressing the pressing rod 9, the hydraulic oil can enter the sealing cavity 20 to push the piston 14 to move upwards, thereby achieving pulling of one of the limiting rods 15.

[0042] In this embodiment, in order to eliminate the downward pressure of the detection mechanism on the connecting rod 8 when the detection mechanism moves along the connecting rod 8, a support rod 5 is fixedly installed on the top of the sliding block 7 of the detection mechanism, and a support plate is fixedly installed on the top of the support rod 5. The bottom surfaces of the support plate 10 and the support plate 6 are located on the same horizontal plane.

[0043] In this embodiment, a display (not shown in the figure) can be installed on the top surface of the second support plate 6, and an information processor (not shown in the figure) is installed inside the second support rod 5. The display, the information processor, and the distance sensor 3 are electrically connected. The distance sensor 3 transmits the distance value between the side wall of the main beam 30 and the surface of the slider 7 near the main beam 30 to the information processor in real time. The information processor adds the measurement value of the distance sensor 3 to the vertical distance from the surface of the slider 7 to the connecting rod 8 to obtain the vertical distance between the baseline and the side wall of the main beam 30. The information processor transmits the processed information to the display for real-time display.

[0044] Working principle: When using this equipment for testing, the operator first selects the corresponding length and number of connecting rods 8 according to the spacing of the large ribs on the main beam 30. The slider 7 of the testing mechanism is then mounted on one of the connecting rods 8, and the two equal-height blocks 1 are fixedly installed on the side walls of the large ribs at both ends of the main beam 30.

[0045] During installation, such as 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, ensuring that the level block 1 is in close contact with the side wall (web or large rib surface) of the main beam 30. Then, the pressing rod 9 is pressed down, and the hydraulic oil pushes the piston 14 upward, causing the corresponding limiting rod 15 to move upward. Since the limiting rod 15 meshes 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, thereby driving all the limiting rods 15 to move along the direction of the transmission cavity 18, separating them from the magnet block 2. At this time, the magnet block 2 is firmly attracted to 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 the other positioning mechanism is installed. After installation, it should be ensured that the support plate 10 and the support plate 2 6 are in good contact with the upper flange plate 11.

[0046] After installation, the operator needs to perform initial position calibration on the monitor. By pushing the support plate 26, the ranging sensor 3 continuously scans and measures the surface of the web of the main beam 30, thereby obtaining the warping deformation data (web warping) of the entire web length. Simultaneously, at a specific location on the major rib, the system records the lateral offset at that point, which is used to calculate the horizontal bending value (lateral bending) of the main beam 30. Through the information processor, two key parameters, the web warping distribution and the horizontal bending amount at the specified major rib location, can be obtained simultaneously, thereby significantly improving the detection efficiency and the comprehensiveness and reliability of the data.

[0047] During disassembly, the operator only needs to pull the lever 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.

[0048] Embodiment 2: A hoisting machinery comprehensive performance detection device, the embodiment provides a new detection mechanism ranging unit, specifically, as shown in Figure 7 and Figure 8 The ranging unit mainly comprises a roller 21, a supporting block 23, a spring 22, a pressure touch sensor and a ranging sensor two 26. The sliding block 7 of the embodiment is provided with a groove on the surface close to the main beam 30, and the roller 21 is partially located in the groove. Meanwhile, a sliding groove 24 is arranged on the side surface of the sliding groove 24 close to the groove, and the entire ranging unit is located in the sliding groove 24. The supporting block 23 slides along the length direction of the sliding groove 24, one end of the spring 22 is fixedly connected with the supporting block 23, and the other end is fixedly connected with the end portion of the sliding groove 24. Meanwhile, the pressure touch sensor is embedded in the sliding block 7 and fixedly connected with the spring 22. The spring 22 is used for ensuring that the roller 21 is always in close contact with the surface of the web plate, and simultaneously enabling the pressure sensor 25 to detect the vertical distance between the side surface 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 amount of the spring 22). The ranging sensor two 26 adopts a reflection type photoelectric sensor, preferably an Omron EE-SX671 model, which has a width of only 4.5 mm and is suitable for the narrow installation space of the sliding groove 24 and is used for detecting the real-time distance between the supporting block 23 and the end portion of the sliding groove 24.

[0049] The rest of the detection device in the embodiment is the same as that in Embodiment 1, which will not be described here.

[0050] Working principle: when the detection device is used, the positioning mechanism is first fixed at a specified position, so that the roller 21 is in close contact with the side wall of the main beam 30, the operator calibrates the initial distance, and then pushes the supporting plate two 6 to drive the roller 21 to roll along the side wall of the main beam 30. The ranging sensor two 26 measures the distance change between the supporting block 23 and the end portion of the sliding groove in real time, and accordingly the deflection values of the web plate at different positions and the bending amount of the main beam 30 in the horizontal direction at the large rib plate can be obtained, thereby significantly improving the detection efficiency and the reliability of the data.

[0051] It should be clear that no matter what specific structure of the detection mechanism is adopted, as long as the ranging sensor can realize accurate measurement of the distance between the reference line and the side wall of the main beam 30, regardless of the detection position or the structure deformation mode, it all belongs to the protection scope of the claims of the present application.

[0052] Embodiment 3: A hoisting machinery comprehensive performance detection device, the embodiment provides a new quick locking unit structure of the positioning mechanism, as shown in Figure 10 and Figure 11As shown, an adsorption cavity 28 communicating with the outside is formed in the equal-height block 1, the adsorption cavity 28 is "horn-shaped", and a rubber layer is arranged along the edge of the adsorption cavity 28 on the outer wall of the equal-height block 1, so as to avoid the existence of gaps when the equal-height block 1 is attached to the main beam 30. The quick-lock unit of the embodiment comprises a gas pressure pipe 29 and a screw rod 27, one end of the gas pressure pipe 29 communicates with the adsorption cavity 28, the other end penetrates through the support rod 4 and the support plate 10, and the threaded section of the screw rod 27 is located in the gas pressure pipe 29 and is threadedly connected with the gas pressure pipe 29.

[0053] During installation, the equal-height block 1 is attached to the side wall of the main beam 30, the screw rod 27 is rotated to move upward, so as to form negative pressure in the adsorption cavity 28, and the firm fixation of the equal-height block 1 on the side wall of the main beam 30 is realized. During disassembly, the screw rod 27 is reversely rotated to balance the pressure in the adsorption cavity 28 with the outside, so that the positioning mechanism can be removed.

[0054] It should be noted that, no matter what specific structural form the quick-lock unit adopts, as long as the function of quickly fixing the equal-height block 1 to the side wall of the main beam 30 can be realized, it shall belong to the protection scope of the claims of the present application.

[0055] The above description is only the preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A comprehensive performance detection device for a hoisting machine, characterized in that, The application relates to a positioning mechanism for a main beam (30) of a crane, which comprises two positioning mechanisms, a plurality of spliced connecting rods (8) and a detection mechanism; the positioning mechanisms are detachably connected with the connecting rods (8), the detection mechanism is slidably sleeved on the connecting rods (8), the detection mechanism can slide along the connecting rods (8) and detect the warp of the web plate of the main beam (30) and the horizontal bending degree of the main beam (30); the positioning mechanisms can be fixed on the side walls of the main beam (30). The positioning mechanism comprises an equal-height block (1) and a quick-locking unit; the quick-locking unit is installed on the equal-height block (1) and can quickly fix the equal-height block (1) on the side wall of the main beam (30). The equal-height block (1) is internally provided with a placing groove (16) in communication with the outside and a sealing transmission cavity (18) which is arranged around the placing groove (16); the quick-locking unit comprises a magnet block (2), a pull rod (12) and a limiting device; the magnet block (2) is slidably arranged in the placing groove (16), one end of the magnet block (2) away from the opening of the placing groove (16) is fixedly connected with the pull rod (12), the holding section of the pull rod (12) is located outside the equal-height block (1), and the pull rod (12) is slidably in contact with the side wall of the equal-height block (1); the limiting device is located in the transmission cavity (18) and is used for limiting the position of the magnet block (2). 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 the transmission cavity (18), the end portions of the plurality of transmission gears (19) are rotatably connected with 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 meshed with the gear ring (17) and the corresponding limiting rods (15); the limiting rods (15) are slidably connected with the inside of the equal-height block (1), and the limiting ends of the limiting rods (15) are located in the placing groove (16) and are used for limiting the magnet block (2); the pressing unit is connected with one of the limiting rods (15) and is used for adjusting the position of the limiting rod (15).

2. The comprehensive performance testing device for hoisting machinery according to claim 1, characterized in that, The detection mechanism comprises a sliding block (7) and a distance measuring unit; the sliding block (7) can be slidably sleeved on the connecting rod (8), and the distance measuring unit is arranged in the sliding block (7) and can measure the warp of the web plate of the main beam (30) and the horizontal bending degree of the main beam (30).

3. A comprehensive performance testing apparatus for a hoisting machine according to claim 2, characterized in that, The distance measuring unit is a distance measuring sensor (3), and the emitting end and the receiving end of the distance measuring sensor (3) are integrated in the sliding block (7).

4. The comprehensive performance testing device for hoisting machinery according to claim 2, characterized in that, The distance measuring unit comprises a roller (21), a supporting block (23), a spring (22), a pressure sensor (25) and a distance measuring sensor (26); one side of the sliding block (7) close to the main beam (30) is provided with a groove, the side wall of the sliding block (7) close to the groove is symmetrically provided with two sliding grooves (24), the supporting block (23) is slidably arranged in the sliding groove (24), the axis of the roller (21) is rotatably connected with the supporting block (23), and the two ends of the spring (22) are fixedly connected with the supporting block (23) and the end portions of the sliding grooves (24) respectively; the distance measuring sensor (26) is installed in the sliding groove (24) and is used for measuring the distance between the supporting block (23) and the end portion of the sliding groove (24); the pressure sensor (25) is embedded in the sliding block (7), and the sensing end of the pressure sensor (25) is fixedly connected with the end portion of the pressure sensor (25).

5. The comprehensive performance testing device for hoisting machinery according to claim 1, characterized in that, The pressing unit comprises a pressing rod (9), a hydraulic pipe (13) and a piston (14); a sealed cavity (20) is formed in the equal-height block (1), the piston (14) is slidingly arranged in the sealed cavity (20), and one side surface of the piston (14) is fixedly connected with one limiting rod (15); one end of the hydraulic pipe (13) is in communication with the sealed cavity (20), and one end of the pressing rod (9) is located in the hydraulic pipe (13) and is in sealed sliding connection with the hydraulic pipe (13).

6. A comprehensive performance testing apparatus for a hoisting machine according to any one of claims 1-5, characterized in that, The top of the positioning mechanism and the detection mechanism is provided with a supporting mechanism, and the supporting mechanism comprises a supporting rod and a supporting plate. The top of the supporting rod is fixedly connected with the bottom surface of the supporting plate.

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