A weight-adjustable combination hoist test device

Abstract

The application discloses a kind of adjustable combination's test device of gourd, including suspension component, and the lifting appliance component of sliding fit with guide rail component, plug-in component and five weights that are empty in order according to weight increment, lifting appliance component includes nine weighing bars of sliding fit in grating, and the weighing bar in the middle is inserted into the plug-in cooperation with the weight in the middle, four pairs of weighing bars that are arranged in turn in extension on the both sides of the weighing bar are respectively inserted into the plug-in cooperation with corresponding weight, plug-in component includes rack plate, single electric cylinder with screw rod, gusset that is arranged in parallel in the inner side of rack plate, single servo motor of driving control electric cylinder, screw rod head end is connected with gusset thread, and nine sockets corresponding to nine weighing bars are fixed on the vertical surface of gusset, and nine cylinders controlled corresponding to nine weighing bars are fixed on the top surface of gusset, and each cylinder is configured with straight insertion pin.The weighing bar of lifting appliance component is inserted first and then selected in quantity by controlling plug-in component, and the weight of weighing bar not pulled off is combined to test lifting tonnage.

Description

[Technical Field]

[0001] This invention relates to a hoist testing device with adjustable weight combinations, belonging to the technical field of dynamic load and load-limiting simulation testing equipment for electric hoists. [Background Technology]

[0002] In the existing limited-load hoist simulation test device with patent number 201921509051.1, multiple main weights 8 are used. Before conducting dynamic load performance and limited-load performance tests, the nuts of the main weights 8 need to be manually fixed to the lower section of the lifting rod 6 one by one.

[0003] Because the main weight 8 needs to be fixed manually piece by piece, it is not only labor-intensive but also has low test preparation efficiency. The existing device is only suitable for testing products with manual hoists. Since the lifting speed of electric hoists is faster than that of manual hoists, the existing device is difficult to respond to and therefore difficult to test effectively. [Summary of the Invention]

[0004] The purpose of this invention is to provide a hoist testing device with a simple structure and high efficiency, featuring adjustable weight combinations. This device can perform load-limiting and dynamic load performance tests based on the rated load of the electric hoist to be tested, and can automatically adjust the weight combination.

[0005] Therefore, the present invention provides the following technical solution:

[0006] A hoist testing device with adjustable weight combinations includes a suspension component, a lifting device, and guide rail components, a weight set, and a plug-in component located in a pit. The plug-in component is arranged outside the weight set and the lifting device. The improvement lies in the following: the suspension component includes a cantilever beam and a hook frame movably connected to the lifting point of the cantilever beam. The hook frame can hold an electric hoist with a load limiter. The guide rail component includes a guide rail frame and two vertical guide rails fixed to the inner side wall of the guide rail frame. The weight set includes five weights arranged in ascending order of weight and sequentially without weight. The lifting device includes a crossbeam, guide shoes fixed to both ends of the crossbeam and slidingly fitted with the vertical guide rails, a vertical connecting rod movably connected to the center of the crossbeam, a grid plate fixed to one side of the crossbeam, and nine weighing rods slidingly fitted to the grid plate. The central weighing rod is movably connected to a central weight. The four symmetrical rods, arranged symmetrically on both sides of the weighing rod, are pluggable and pluggable with the corresponding weights. The vertical connecting rod extends out of the pit, and the lifting ring at its upper end is hooked to the lower hook of the electric hoist. The pluggable component includes a frame plate, a single electric cylinder fixed to the frame plate, an angle plate arranged parallel to the inner side of the frame plate, and a single servo motor for driving and controlling the axial travel of the lead screw of the electric cylinder. The head end of the lead screw is threaded to the angle plate. Multiple horizontal guide rods arranged on both sides of the lead screw are fixedly connected to the angle plate, and the horizontal guide rods are axially slidably supported in the frame plate. The vertical surface of the angle plate is fixed with nine sockets facing each of the nine weighing rods. The top surface of the angle plate is fixed with nine controlled cylinders corresponding to the positions of the nine weighing rods. Each cylinder is equipped with a telescopic straight plug.

[0007] The aforementioned vertical connecting rod consists of an upper section and a lower section. The upper section of the vertical connecting rod is threadedly connected to hinge joint I, while the lower section is threadedly connected to hinge sleeve I. Hinge joint I is hinged to hinge sleeve I. The bottom end of the lower section of the vertical connecting rod is threadedly connected to the hinge seat hinged to the crossbeam. The upper end of the upper section of the vertical connecting rod is threadedly connected to hinge sleeve II. Hinge sleeve II is hinged to hinge joint II. The lifting ring is located on hinge joint II. The installation angles of hinge joint I and hinge joint II differ by 90 degrees, and the installation angles of hinge sleeve I and hinge sleeve II differ by 90 degrees.

[0008] The upper and lower sections of the vertical connecting rod are equipped with two sets of hinge joints and hinge sleeves. Since the installation angles of these two sets of hinge joints differ by 90 degrees, the split connecting rod has two degrees of freedom. When the electric hoist is started, it responds well to the acceleration of the electric hoist, resulting in good dynamic balance of the lifting device components. This ensures the accuracy of the load test and meets the test requirements of lifting weights while suspending them in the air without completely detaching them from the pit floor.

[0009] The aforementioned suspension components also include a column base fixed to the ground, a pin-type weight sensor, a hook pin, a locking cylinder A for the hook pin, and an unlocking cylinder A' for the hook pin. The cantilever beam is welded to the top surface of the column base. The upper part of the hook frame is supported by the pin-type weight sensor. The pin-type weight sensor is installed on two vertical plates located on both sides of the hook frame and fixed to the bottom surface of the cantilever beam's lifting point. One end of the pin-type weight sensor is detachably fixed to one of the vertical plates. The lifting lug of the electric hoist can extend into the hook cavity of the hook frame. Upper and lower limit laser beam switches are respectively installed on the side wall of the hook frame at corresponding positions on the upper and lower parts of the hook cavity. The hook pin slides onto the hook frame. The locking cylinder A and the unlocking cylinder A' are respectively arranged on the outer sides of both ends of the hook pin.

[0010] The lower limit laser beam switch can detect whether the hook pin effectively supports the lifting lug of the electric hoist under test; the upper limit laser beam switch can effectively prevent the lifting lug from extending too deeply into the hook cavity of the hook frame, so as to avoid the electric hoist under test generating a downward impact force during the hook pin process and transmitting it to the pin-type sensor, causing it to vibrate and be damaged.

[0011] The working principle of this invention is as follows: For electric hoists with rated loads of 0.25t, 0.5t, 1t, and 2t, especially those with fast lifting speeds, it is necessary to conduct tests on the load limit and dynamic load requirements according to standard regulations. One of the four rated load electric hoists can be selected for testing. The weight combination method of each weight group is controlled by a PLC, which pushes the socket through an electric cylinder to fully insert all the weighing rods first. With the number of cylinders selectably controlled, the corresponding number of straight-pronged pins of the corresponding number of cylinders are pushed to engage the corresponding number of weighing rods in the engaged state. The engaged weighing rods are then removed from the corresponding weights during the return process of the electric cylinder, thus combining the weights with the weighing rods to form the weight required for the specific load test. The weight group is used in multiple combinations to meet the actual lifting load required for the load limit and dynamic load tests in multiple sessions (weights removed from the weighing rods are not used for lifting and remain in standby mode).

[0012] This invention has the following advantages and positive effects:

[0013] The weight set adopts a nested structure, combined with the pluggable structure of the weighing rod and the weight set of the lifting device. All weighing rods and weight sets can be fully plugged in one-to-one. Through the pluggable component, the cylinder group with integrated electromagnetic reversing valve selectively controls less than all cylinders to engage with the corresponding number of weighing rods. Then, the electric cylinder is driven by the servo motor to return to the stroke, which can realize the non-used weights being disconnected from the corresponding weighing rods. This realizes the free combination and adjustment of the number and weight of the weights to be used for lifting, thus meeting the actual lifting load required for the limit load and dynamic load test of the electric hoist on the same device. Since it eliminates the need for manual selection and installation of weights, it not only saves labor but also has high efficiency in test preparation.

[0014] In this device, after all the weights are inserted into the weighing rod, the weights can be selectively removed from the weighing rod. Therefore, only one electric cylinder is needed, and correspondingly, only one servo motor is needed. This makes the device simple in structure, saves on configuration costs, and simplifies the control of the device.

[0015] The nested structure of the weight set helps to reduce the depth of the pit and reduce construction costs. [Attached Image Description]

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 yes Figure 1 The P-direction view in the middle;

[0018] Figure 3 yes Figure 1 Enlarged view of section A in the middle;

[0019] Figure 4 yes Figure 1 Enlarged view of section B in the middle;

[0020] Figure 5 This is an axonometric view of the lifting device component;

[0021] Figure 6 This is an axonometric view of the plug-in / plug-out component in its initial (retracted) state;

[0022] Figure 7 This is an axonometric view of the plug-in / plug-out component in its extended state;

[0023] Figure 8 This is a diagram showing the arrangement of the weights.

[0024] Figure 9 The diagram shows the lifting state of an electric hoist with a rated load of 1t under the load limit test, using a combination of weights.

[0025] Figure 10The diagram shows the lifting state of an electric hoist with a rated load of 1t under dynamic load, using a combination of weights.

[0026] Figure 11 This is a schematic diagram of the structure of the electric hoist used for testing;

[0027] Figure 12 This is a circuit block diagram of the present invention. 【Detailed Implementation Methods】

[0028] Please see Figures 1-12 As shown, a hoist testing device with adjustable weight combinations includes a suspension component, a lifting device 4, and guide rail components, a weight set 3, and a plug-in component located in a pit F. The plug-in component is arranged outside the weight set and the lifting device. The suspension component includes a cantilever beam 1 and a hook frame 11 movably connected to the lifting point of the cantilever beam 1. The hook frame can hang an electric hoist D with a load limiter. The guide rail component includes a guide rail frame and two vertical guide rails 20 fixed to the inner side wall of the guide rail frame. The weight set 3 includes five weights (placed at the bottom of the pit) arranged in ascending order of weight. The lifting device includes a crossbeam 42, guide shoes 40 fixed at both ends of the crossbeam and slidingly fitted with the vertical guide rails 20, a vertical connecting rod 43 movably connected to the center of the crossbeam, a grid plate 45 fixed to one side of the crossbeam, and nine weighing rods slidingly fitted on the grid plate. Among them, the middle weighing rod is pluggable with the middle weight. Four symmetrical rods arranged symmetrically on both sides of the weighing rod are pluggable to the corresponding weights. The vertical connecting rod 43 extends out of the pit F and the lifting ring 44 at its upper end is hooked to the lower hook D0' of the electric hoist D. The pluggable component includes a frame plate 5A, a single electric cylinder 5 fixed to the frame plate, an angle plate 52 arranged parallel to the inner side of the frame plate, and a single servo motor M for driving and controlling the axial travel of the lead screw 51 of the electric cylinder. The head end of the lead screw 51 is threaded to the angle plate 52. Multiple horizontal guide rods 50 arranged on both sides of the lead screw are fixedly connected to the angle plate 52 and the horizontal guide rods 50 are axially slidably supported in the frame plate 5A. The vertical surface of the angle plate 52 is fixed with nine sockets facing each of the nine weighing rods. The top surface of the angle plate 52 is fixed with nine controlled cylinders corresponding to the positions of the nine weighing rods. Each cylinder is equipped with a telescopic straight plug.

[0029] Please see Figure 1 , 2 9, 10, The guide rail frame is fixed in the pit F. The guide rail frame consists of four columns 21 and two end beams 22 that are respectively connected to the columns.

[0030] Please see Figure 8All five weight sets (3) are placed in pit F, with their centers corresponding to the suspension points of cantilever beam 1. The five weights are: weight I31 (55 kg), weight II32 (120 kg), weight III33 (310 kg), weight VI34 (875 kg), and weight V35 (1870 kg). Weight I31 has a socket hole on its top, while weights II32, III33, VI34, and V35 each have two symmetrical socket holes (not shown). Please refer to [link to documentation]. Figure 9 , 10 .

[0031] See Figure 5 The nine weighing beams are supported by linear bearings (not shown) mounted on the grid plate, and each beam has a neck near its outer end for straight-pin engagement; when no weights are being lifted or when the lifting equipment is lowered into place, please refer to Figure 2 Combination Figure 9 The two ends of the crossbeam 42 rest on the top surface of the footrest 4A fixed to the pit F, and the footrest is located within the space of the guide rail frame; the nine weighing rods are specifically: one weighing rod I41-1, two weighing rods II41-2, two weighing rods III41-3, two weighing rods VI41-4, and two weighing rods V41-5. Among them, weighing rod I41-1 is centrally located, two weighing rods II41-2 are symmetrically arranged on both sides of weighing rod I41-1, two weighing rods III41-3 are symmetrically placed on both sides of weighing rod I41-1 and are also located outside weighing rod II41-2, two weighing rods VI41-4 are symmetrically placed on both sides of weighing rod I41-1 and are also located outside weighing rod III41-3, and two weighing rods V41-5 are symmetrically arranged on both sides of weighing rod I41-1 and are also located outside weighing rod VI41-4. In addition, the sockets of weighing rod I41-1 and weight I31 are pluggable and detachable, weighing rod II41-2 and weight II32 are pluggable and detachable, weighing rod III41-3 and weight III33 are pluggable and detachable, weighing rod VI41-4 and weight VI34 are pluggable and detachable, and weighing rod V41-5 and weight V35 are pluggable and detachable; the total weight of lifting device component 4 is 320kg (including the counterweight grid plate not shown, which is fixed to the other side of the crossbeam).

[0032] The frame plate 5A is fixed in the pit; the nine sockets are: one socket I53-1, two sockets II53-2, two sockets III53-3, two sockets VI53-4, and two sockets V53-5. Socket I53-1 is centrally located. Furthermore, socket I53-1 corresponds to the outer end face of the weighing rod I41-1, socket II53-2 corresponds to the outer end face of the weighing rod II41-2, socket III53-3 corresponds to the outer end face of the weighing rod III41-3, socket VI53-4 corresponds to the outer end face of the weighing rod VI41-4, and socket V53-5 corresponds to the outer end face of the weighing rod V41-5.

[0033] The nine cylinders are: one cylinder I54-1, two cylinders II54-2, two cylinders III54-3, two cylinders VI54-4, and two cylinders V54-5. Cylinder I54-1 is centrally located, and each cylinder integrates an identical solenoid directional valve. Specifically, cylinder I54-1 is equipped with two straight-pin I54-1a, each cylinder II54-2 is equipped with two straight-pin II54-2a, each cylinder III54-3 is equipped with two straight-pin III54-3a, each cylinder VI54-4 is equipped with two straight-pin VI54-4a, and each cylinder V54-5 is equipped with two straight-pin V54-5a. Specifically, the vertically extendable position of the straight insertion pin I54-1a corresponds to the vertically extendable position of the weighing rod I41-1, the vertically extendable position of the straight insertion pin II54-2a corresponds to the vertically extendable position of the weighing rod II41-2, the vertically extendable position of the straight insertion pin III54-3a corresponds to the vertically extendable position of the weighing rod III41-3, the vertically extendable position of the straight insertion pin VI54-4a corresponds to the vertically extendable position of the weighing rod VI41-4, and the vertically extendable position of the straight insertion pin V54-5a corresponds to the vertically extendable position of the weighing rod V41-5.

[0034] Before lifting, the servo motor controls the lead screw to extend, causing each socket to move and fit against the outer end face of its corresponding weighing rod. It also pushes each weighing rod to insert the corresponding weight. The PLC controller selectively controls the straight insertion pin to extend and selectively engage with the weighing rod in the insertion state through a combination of nine cylinders. When the servo motor controls the lead screw to retract, causing the selectively engaged weighing rod to pull away from the corresponding weight, and when the straight insertion pin of the selectively controlled cylinder retracts to reset, the servo motor can continue to control the lead screw to retract to the initial position before extension. The weight can then be used for lifting operations.

[0035] The vertical connecting rod 43 consists of an upper section 43a and a lower section 43b. The upper section 43a is threaded to the hinge joint I46, while the lower section 43b is threaded to the hinge sleeve I46'. The hinge joint I46 and the hinge sleeve I46' are hinged together. The bottom end of the lower section 43b is threaded to the hinge seat 47 hinged to the crossbeam 42. The upper end of the upper section 43a is threaded to the hinge sleeve II48'. The hinge sleeve II48' is hinged to the hinge joint II48. The lifting ring 44 is located on the hinge joint II48. The installation angles of the hinge joint I46 and the hinge joint II48 differ by 90 degrees, and the installation angles of the hinge sleeve I46' and the hinge sleeve II48' differ by 90 degrees.

[0036] The suspension component 4 also includes a column base 1' cast into the ground, a pin-type weight sensor 12, a hook pin 13, a locking cylinder A14R for the hook pin, and an unlocking cylinder A'14L for the hook pin. The cantilever beam 1 is welded to the top surface of the column base 1', and the suspension point of the cantilever beam 1 is located above the pit F. The upper part of the hook frame 11 is supported by the pin-type weight sensor 12. The pin-type weight sensor 12 passes through the hook frame 11 and is fixed to two vertical plates 120 on the bottom surface of the suspension point of the cantilever beam 1. One end of the pivot-type weight sensor 12 is inserted through a vertical plate, while the other end is detachably fixed to another vertical plate. The lifting lug D0 of the electric hoist D can extend into the hook cavity 110 of the hook frame 11. An upper limit laser beam switch S2 is provided on the side wall of the hook frame 11 at the corresponding position of the upper part of the hook cavity 110, and a lower limit laser beam switch S1 is provided on the side wall of the hook frame 11 at the corresponding position of the lower part of the hook cavity 110. The insertion pin shaft 13 is slidably fitted on the hook frame 11. The locking cylinder A 14R and the unlocking cylinder A'14L are respectively arranged on the outer sides of both ends of the insertion pin shaft 11.

[0037] The commonly known electric hoist D is equipped with a load limiter, which includes a disc spring D1 located on the left side of the motor shaft (unnumbered), and a drive flange D2, a load limit bearing D3, a connecting flange D4 installed on the input shaft (unnumbered), and a friction disc D5 located between these two flanges, and an adjusting nut D6 threadedly connected to the end cover of the motor.

[0038] Please see Figure 12As shown, the power grid U uses AC380V to directly supply the PLC control cabinet 6 and the frequency converter U1. The PLC control cabinet 6 outputs DC24V to the operating console 61, barcode scanner 7, and the pin-type weight sensor 12, solenoid directional valve A81, solenoid directional valve A'82, upper limit laser beam switch S2, and lower limit laser beam switch S1 located on the top of the control box. The PLC control cabinet 6 controls the opening of the locking cylinder A14R through solenoid directional valve A81, and controls the... The cylinder A'14L is used to unlock the motor; based on the barcode scanner 7's recognition of the QR code on the electric hoist D, the PLC control cabinet 6 outputs the corresponding voltage to power the electric hoist D, and the PLC control cabinet 6 outputs AC220V to the servo motor M; based on the barcode scanner 7's recognition of the QR code on the electric hoist D, the PLC control cabinet outputs DC24V to the cylinder group 54, which integrates an electromagnetic reversing valve in the plug-in component, and can selectively control the opening and closing of the corresponding cylinder in the cylinder group 54. All the above connections with the PLC control cabinet are bidirectional signal transmissions.

[0039] The control panel 61 is equipped with a main switch, a power indicator light, and up and down buttons for testing. The PLC control cabinet 6 controls the extension of the straight insertion pins of each cylinder in the cylinder group 54 and the retraction of the straight insertion pins of each cylinder in the cylinder group 54. The servo motor controls the stroke of the electric cylinder.

[0040] Taking an electric hoist D with a rated lifting capacity of 1t as an example, the following steps are performed on this device for testing. The process requirements are a load limit test load of 1.5t and a dynamic load test load of 1.25t.

[0041] Step 1) The electric hoist D extends into the hook frame 11. The upper limit laser beam switch S2 and the lower limit laser beam switch S1 provide signals to the PLC control cabinet 6. The PLC control cabinet provides signals to the solenoid reversing valve A81 and controls the locking cylinder A14R to push the hook pin 13 into the hook cavity 110. The electric hoist D is then installed in place. The electric hoist is connected to the power supply and control line, and the lifting ring 44 of the lifting device component 4 is hooked together with the lower hook D0'.

[0042] Step 2) Load Limit Performance Test: The barcode scanner 7 scans the QR code on the electric hoist. The PLC control cabinet 6 controls the plugging and unplugging components. Under the control of the servo motor M, the stroke of the electric cylinder 51 causes all the weighing rods to be plugged into the weight group 3. Then, the PLC control cabinet controls cylinders I54-1, II54-2, and V54-5 to open respectively, causing the straight plug I54-1a to extend and engage the weighing rod I41-1, the straight plug II54-2a to extend and engage the weighing rod II41-2, and the straight plug V54-5a to extend. The weighing rod V41-5 is engaged. Then, under the control of the servo motor M, the electric cylinder 5 drives the weighing rod I41-1 to pull away weight I31, the weighing rod II41-2 to pull away weight II32, and the weighing rod V41-5 to pull away weight V35. Afterwards, the straight pins I54-1a, II54-2a, and V54-5a retract to their reset positions. Immediately afterwards, the servo motor continues to control the lead screw 51 of the electric cylinder to return until it retracts to its initial position before extension, ensuring a safe distance between the insertion / removal components and the lifting device components. At this point, see... Figure 9 As shown, the total weight of the lifting device 4, together with the weights III33 and VI34, is 1505kg, which meets the requirements of the load limit performance test. Manually press the lifting button on the electric hoist's hand switch. If the electric hoist slips when the 1.505t lifting weight is lifted off, it indicates that the load limit performance test has passed. Otherwise, adjust the load limit adjusting nut D6 until slippage occurs. After the load limit test is completed, lower the lifting device 4 until its crossbeam 42 rests on the footrest 4A, and remove all the weighing rods, waiting for the dynamic load test.

[0043] Step 3) After the load-limiting performance test is passed, the dynamic load performance test can be carried out:

[0044] Unlike step 2), please refer to [link / reference]. Figure 10 As shown, from the fully connected weighing rod, selectively remove weighing rod II41-2 from weight II32, weighing rod III41-3 from weight III33, and weighing rod V41-5 from weight V35. At this time, the total weight of the lifting device components, together with the weights I31 and VI34 used, is 1250kg, which meets the requirements of dynamic load performance testing.

[0045] At this point, the test button on the control panel 61 can be pressed. If the electric hoist does not slip during the lifting and lowering test, it indicates that the dynamic load performance test has passed.

[0046] Step 4) After the dynamic load performance test is completed, lower and reset the lifting device component 4, pull out the weighing bar I41-1 and weighing bar VI41-4 to reset the weights I31 and VI34, and use the unlocking cylinder A'14L to push the hook pin 13 out of the hook cavity 110 to remove the test product and complete the test.

[0047] This invention is applicable to simulation tests of electric hoists D with rated loads of 0.25t, 0.5t, 1t, and 2t, and is also applicable to manual hoist tests.

Claims

1. A gourd testing device with adjustable weight combination, comprising a suspension component, a lifting component, and guide rail components, a weight set, and a plug-in component respectively located in a pit, wherein the plug-in component is arranged outside the weight set and the lifting component, characterized in that: The suspension components include a cantilever beam and a hook frame movably connected to the lifting points of the cantilever beam. The hook frame can be equipped with an electric hoist with a load limiter. The guide rail component includes a guide rail frame and two vertical guide rails fixed to the inner wall of the guide rail frame from opposite directions. The weight set consists of five weights arranged in ascending order of weight, nested empty in sequence. The lifting device components include a crossbeam, guide shoes fixed at both ends of the crossbeam and slidably fitted with the vertical guide rails, a vertical connecting rod movably connected to the center of the crossbeam, a grid plate fixed to one side of the crossbeam, and nine weighing rods slidably fitted onto the grid plate. A central weighing beam is pluggable to a central weight. Four symmetrical rods arranged symmetrically on both sides of the beam are pluggable to corresponding weights. A vertical connecting rod extends out of the pit, and a lifting ring at its upper end is connected to the lower hook of an electric hoist. The plug-in component includes a frame plate, a single electric cylinder fixed to the frame plate, corner plates arranged parallel to the inner side of the frame plate, and a single servo motor for driving and controlling the axial travel of the lead screw of the electric cylinder. The head end of the lead screw is threadedly connected to the corner plate. Multiple horizontal guide rods arranged on both sides of the lead screw are fixedly connected to the corner plate and the horizontal guide rods are axially slidably supported in the frame plate. The vertical surface of the corner plate is fixed with nine sockets facing each of the nine weighing rods one by one. The top surface of the corner plate is fixed with nine controlled cylinders corresponding one-to-one with the positions of the nine weighing rods. Each cylinder is equipped with a telescopic straight plug.

2. The gourd testing device with adjustable weight combination according to claim 1, characterized in that: The vertical connecting rod consists of an upper section and a lower section. The upper section is threaded to hinge joint I, and the lower section is threaded to hinge sleeve I. Hinge joint I is hinged to hinge sleeve I. The bottom end of the lower section is threaded to the hinge seat hinged to the crossbeam. The upper end of the upper section is threaded to hinge sleeve II. Hinge sleeve II is hinged to hinge joint II. The lifting ring is located on hinge joint II. The installation angles of hinge joint I and hinge joint II differ by 90 degrees, and the installation angles of hinge sleeve I and hinge sleeve II differ by 90 degrees.

3. The gourd testing device with adjustable weight combination according to claim 1 or 2, characterized in that: The suspension components also include a column base fixed to the ground, a pin-type weight sensor, a hook pin, a locking cylinder A for the hook pin, and an unlocking cylinder A' for the hook pin. The cantilever beam is welded to the top surface of the column base. The upper part of the hook frame is supported by the pin-type weight sensor. The pin-type weight sensor is installed on two upright plates located on both sides of the hook frame and fixed to the bottom surface of the cantilever beam at its lifting point. One end of the pin-type weight sensor is detachably fixed to one of the upright plates. The lifting lug of the electric hoist can extend into the hook cavity of the hook frame. Upper and lower limit laser beam switches are respectively installed on the side wall of the hook frame at corresponding positions on the upper and lower parts of the hook cavity. The hook pin slides onto the hook frame. The locking cylinder A and the unlocking cylinder A' are respectively arranged on the outer sides of both ends of the hook pin.

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