A device for detecting the hooking and unhooking of an electric hoist by using an additional mass method

Abstract

The utility model is suitable for engineering detection equipment technical field provides a kind of additional mass method detects electric hoist-infrared unhooking type lifting weight device, it includes: triangle support frame, 12V battery, winch, unhooker, remote control handle, weight and pulley;Triangle support frame top center position is fixed with circular ring, pulley is movably connected with triangle support frame by circular ring, and pulley is vertically arranged in the just below triangle support frame;Winch output end is wound with wire rope, wire rope end away from winch passes through pulley, and wire rope end is fixed with hook;Unhooker top is fixed with ring;The utility model can improve detection work safety factor, greatly reduce detection work to lift weight artificial quantity, reduce detection work artificial cost, greatly improve detection work efficiency, easily keep the consistency and the stability of falling hammer height, improve the consistency of detection result.

Description

Technical Field

[0001] This utility model relates to the field of engineering testing equipment technology, specifically a device for testing electric hoists using the additional mass method – an infrared detachable lifting and lowering hammer. Background Technology

[0002] The added mass method for detecting the density of rockfill masses establishes a mathematical model based on the correlation between elastic wave propagation velocity and medium density. It uses a known mass block to excite vibration signals, calculates the dynamic parameters of the rockfill mass, and inversely determines the density value. This method is based on elastic dynamics theory, assuming the rockfill mass is a homogeneous elastic medium. The vibration response of the added mass block is directly related to the stiffness and damping characteristics of the rockfill mass, and it has wide applications in engineering testing.

[0003] However, in existing technologies, the lifting device for the hammer is mostly operated manually, which has obvious drawbacks: the hammer usually weighs more than 50kg, and manual lifting relies on manpower or simple tools, which can easily cause the hammer to fall due to slipping, rope breakage, or lack of strength, resulting in personnel injury and equipment damage; improper manual unhooking operation can easily cause the hammer to tilt and fall, and the lifting speed is only 0.1-0.3m / min, which is far below the operational requirements. Frequent lifting and lowering can also lead to personnel fatigue and extend the work period by 30%-50%; at the same time, the manual holding force error can reach ±5cm or more, the unhooking reaction is delayed, and it is impossible to guarantee the consistent height of the falling hammer and the stability of the fall, which affects the accuracy of the test results and makes it difficult to meet the needs of large-area, high-precision testing.

[0004] Therefore, in view of the above situation, there is an urgent need to provide an additional mass method for detecting electric hoists with infrared unhooking type lifting and lowering hammers, so as to overcome the shortcomings in current practical applications. Utility Model Content

[0005] The purpose of this invention is to provide an infrared unhooking type lifting and lowering hammer device for detecting electric hoists using the added mass method, aiming to solve the problems in the background art mentioned above.

[0006] This utility model is implemented as follows: an infrared-disengaged lifting and lowering hammer device for detecting electric hoists using the additional mass method, comprising:

[0007] Triangular support frame, 12V battery, winch, unhooking device, remote control handle, counterweight and pulley;

[0008] A ring is fixedly installed at the center of the top of the triangular support frame, and the pulley is movably connected to the triangular support frame through the ring, with the pulley vertically positioned directly below the triangular support frame.

[0009] The winch is fixedly installed at the center height of any one of the brackets of the triangular support frame. A steel wire rope is wound around the output end of the winch. The end of the steel wire rope away from the winch passes through the pulley, and a hook is fixedly installed at the end of the steel wire rope.

[0010] The top of the unhooking device is fixedly equipped with a hanging ring, and the unhooking device is detachably connected to the hook through the hanging ring. The bottom of the unhooking device is equipped with a hook structure for hanging a weight, and a photoelectric sensor for controlling the unhooking action is installed on the outside of the unhooking device.

[0011] The winch is electrically connected to the remote control handle, and both the winch and the remote control handle are electrically connected to a 12V battery via power cords.

[0012] As a further embodiment of this utility model, it also includes a foot pedal for adjusting the length of the three supports of the triangular support frame, and each support adjustment section is provided with a threaded hole, and a bolt for locking after adjustment is provided in the threaded hole.

[0013] As a further embodiment of this invention, the winch is also equipped with a rotary switch and a hook.

[0014] As a further aspect of this utility model: the winch has a built-in overload protector and supports frequency conversion speed regulation with a speed regulation range of 1.0-3.0m / min.

[0015] As a further aspect of this utility model: the photoelectric sensor is an infrared through-beam sensor, the triggering method is to block infrared light, and the response time of the photoelectric sensor is ≤0.01s.

[0016] As a further aspect of this utility model: the surface of the remote control handle is provided with an emergency stop button, and the effective control distance between the remote control handle and the winch and the unhooker is not less than 10m.

[0017] As a further embodiment of this utility model, the remote control handle is also provided with a control button that can independently control the rising and falling movements of the winch and the unhooking movement of the unhooker.

[0018] As a further embodiment of this utility model: the wire rope is made of corrosion-resistant galvanized material, and the diameter of the wire rope is compatible with the groove specifications of the drum and pulley at the output end of the winch.

[0019] As a further embodiment of this utility model: the surface of the wire rope is uniformly coated with a layer of lubricating grease.

[0020] As a further embodiment of this utility model: the hammer is made of cast iron, and the top of the hammer is provided with a hanging hole that is compatible with the hook structure at the bottom of the unhooking device. The weight of the hammer can be changed to a hammer of different weight specifications according to the testing requirements.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] This device can improve the safety factor of the inspection work, significantly reduce the number of people required to lift the hammer, reduce the labor cost of the inspection work, greatly improve the efficiency of the inspection work, and make it easier to maintain the consistency of the hammer drop height and the stability of the hammer drop, thereby improving the consistency of the inspection results. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the winch structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the 12V battery structure of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the unhooking device of this utility model;

[0028] Figure 5 This is a schematic diagram of the remote control handle structure of this utility model;

[0029] Figure 6 This is a schematic diagram of the weight structure of this utility model;

[0030] Figure 7 This is a schematic diagram of the pulley structure of this utility model;

[0031] Figure 8 This is a schematic diagram of the triangular support frame structure of this utility model.

[0032] In the attached diagram: 1-Triangular support frame, 2-Winder, 3-12V battery, 4-Unhooking device, 5-Remote control handle, 6-Flat weight, 7-Pulley, 8-Ring, 9-Wire rope, 10-Hook, 11-Hanging ring, 12-Photoelectric sensor, 13-Bolt, 14-Foot pedal, 15-Rotary switch, 16-Copper wire post, 17-Hook, 18-Electrode connector. Detailed Implementation

[0033] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0037] Please see Figures 1-8 This utility model provides an infrared-disengaged lifting and lowering hammer device for detecting electric hoists using the additional mass method. It includes a triangular support frame 1, a winch 2, a 12V battery 3, a release device 4, a remote control handle 5, a hammer 6, and a pulley 7. A circular ring 8 at the top center of the triangular support frame 1 is movably connected to the pulley 7. The winch 2 is fixed to a bracket of the triangular support frame 1 and forms an electrical circuit by connecting a copper wire post 16 to the positive and negative terminals 18 of the remote control handle 5 and the 12V battery 3. The wire rope 9 of the winch 2 passes through the pulley 7, and its end hook 10 is connected to the hanging ring 11 at the top of the release device 4. The hammer 6 is hooked onto the bottom hook of the release device 4. A photoelectric sensor 12 on the release device 4 controls the release action.

[0038] In one embodiment of this utility model, please refer to Figures 1-8The release device 4 is detachably connected to the hook 10 via the hanging ring 11. The bottom of the release device 4 is provided with a hook structure for attaching the weight 6, and a photoelectric sensor 12 for controlling the release action is installed on the outside of the release device 4. The winch 2 is electrically connected to the remote control handle 5, and both the winch 2 and the remote control handle 5 are electrically connected to the 12V battery 3 via a power cord.

[0039] The lengths of the three supports of the triangular support frame 1 can be adjusted by the foot pedal 14, and each support adjustment section is provided with a threaded hole. After adjustment, the bolt 13 is used to lock the support through the threaded hole.

[0040] The winch 2 includes a hook 17, a rotary switch 15, and a built-in overload protector. The winch 2 also supports frequency conversion speed regulation with a speed range of 1.0-3.0 m / min.

[0041] The photoelectric sensor on the unhooker 4 is an infrared through-beam sensor 12, which is triggered by blocking infrared light, and the response time of the photoelectric sensor 12 is ≤0.01s. After the photoelectric sensor 12 is triggered, the bottom hook structure of the unhooker 4 is slowly opened, and the unhooker 4 and the counterweight 6 are kept stationary during the opening process.

[0042] The remote control handle 5 is equipped with an emergency stop button, and the effective control distance between the remote control handle 5 and the winch 2 and the unhooker 4 is not less than 10m; the remote control handle 5 can independently control the rising and falling actions of the winch 2 and the unhooking action of the unhooker 4.

[0043] The wire rope 9 is made of corrosion-resistant galvanized material, and the diameter of the wire rope 9 is compatible with the groove specifications of the drum and pulley 7 at the output end of the winch 2; the surface of the wire rope 9 is evenly coated with a layer of lubricating grease.

[0044] The hammer 6 is made of cast iron. The top of the hammer 6 is provided with a hanging hole that is compatible with the hook structure at the bottom of the unhooking device 4. The weight of the hammer 6 can be replaced with hammers of different weight specifications according to the testing requirements.

[0045] In summary, the working principle of this utility model is as follows:

[0046] In use, first place the triangular support frame 1 near the test point, adjust the length of the support and press it down to ensure that the top ring 8 is horizontal; then hang the pulley 7 on the ring 8, pull out the wire rope 9 of the winch 2 and pass it through the pulley 7, so that the hook 10 at the end of the wire rope is connected to the hanging ring 11 of the release device 4; then power the winch 2 and the remote control handle 5 with the 12V battery 3, operate the remote control handle 5 to lower the release device 4, and after it is engaged with the weight 6 on the ground, control the winch 2 to steadily raise the weight 6 to the set drop height; finally, trigger the photoelectric sensor 12 to remotely control the release device 4 to open the bottom hook, and the weight 6 falls freely from the stationary state to hit the ground, while the host collects and records the vibration signal.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for detecting the lifting and lowering counterweight of an electric hoist using the added mass method—infrared detachment type, comprising a triangular support frame (1) and a 12V battery (3), characterized in that, It also includes a winch (2), a release device (4), a remote control handle (5), a counterweight (6), and a pulley (7); A ring (8) is fixedly installed at the top center of the triangular support frame (1), and the pulley (7) is movably connected to the triangular support frame (1) through the ring (8), and the pulley (7) is vertically arranged directly below the triangular support frame (1); The winch (2) is fixedly installed at the center height of any one of the brackets of the triangular support frame (1). The output end of the winch (2) is wound with a steel wire rope (9). The end of the steel wire rope (9) away from the winch (2) passes through the pulley (7), and a hook (10) is fixedly installed at the end of the steel wire rope (9). The top of the unhooking device (4) is fixed with a hanging ring (11), and the unhooking device (4) is detachably connected to the hook (10) through the hanging ring (11). The bottom of the unhooking device (4) is provided with a hook structure for hanging the weight (6), and a photoelectric sensor (12) for controlling the unhooking action is installed on the outside of the unhooking device (4). The winch (2) is electrically connected to the remote control handle (5), and both the winch (2) and the remote control handle (5) are electrically connected to the 12V battery (3) via power lines.

2. The device for detecting electric hoists using the additional mass method—infrared unhooking type lifting and lowering counterweight—according to claim 1, is characterized in that, It also includes a foot pedal (14) for adjusting the length of the three supports of the triangular support frame (1), and each support adjustment section is provided with a threaded hole, and a bolt (13) is provided in the threaded hole for locking after adjustment.

3. The device for detecting electric hoists using the additional mass method—infrared unhooking type lifting and lowering counterweight—according to claim 1, is characterized in that, The winch (2) is also equipped with a rotary switch (15) and a hook (17).

4. The electric hoist-infrared unhooking type lifting and lowering counterweight device for testing according to claim 3, characterized in that, The winch (2) has a built-in overload protector and supports frequency conversion speed regulation with a speed regulation range of 1.0-3.0 m / min.

5. The electric hoist-infrared unhooking type lifting and lowering counterweight device for testing according to claim 1, characterized in that, The photoelectric sensor (12) is an infrared through-beam sensor, which is triggered by blocking infrared light, and the response time of the photoelectric sensor (12) is ≤0.01s.

6. The device for detecting electric hoists using the added mass method—infrared unhooking type lifting and lowering counterweight—according to claim 1, is characterized in that, The remote control handle (5) is equipped with an emergency stop button, and the effective control distance between the remote control handle (5) and the winch (2) and the unhooker (4) is not less than 10m.

7. The device for detecting electric hoists using the additional mass method—infrared unhooking type lifting and lowering counterweight as described in claim 6, characterized in that, The remote control handle (5) is also equipped with a control button that can independently control the rising and falling motion of the winch (2) and the unhooking motion of the unhooker (4).

8. The device for detecting electric hoists using the additional mass method—infrared unhooking type lifting and lowering counterweight—according to claim 1, is characterized in that, The wire rope (9) is made of corrosion-resistant galvanized material, and the diameter of the wire rope (9) is compatible with the groove specifications of the drum and pulley (7) at the output end of the winch (2).

9. The device for detecting electric hoists using the additional mass method—infrared unhooking type lifting and lowering counterweight—according to claim 8, is characterized in that, The surface of the wire rope (9) is uniformly coated with a layer of lubricating grease.

10. The device for detecting electric hoists using the additional mass method—infrared unhooking type lifting and lowering counterweight—according to claim 1, is characterized in that, The hammer (6) is made of cast iron. The top of the hammer (6) is provided with a hanging hole that is compatible with the hook structure at the bottom of the unhooker (4). The weight of the hammer (6) can be changed to a hammer (6) of different weight specifications according to the testing requirements.

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