Single-beam crane with safety protection mechanism
By setting up pressure sensors on the hook of the single-beam crane, automatic judgment and real-time monitoring of the hook status are achieved, the problem of hook falling off or missing is solved, safety protection performance is improved, and cargo fall accidents are prevented.
Patent Information
- Application Number
- CN202421037359.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-05-14
AI Technical Summary
The single-beam crane cannot automatically determine the lifting status of the hook when lifting the goods. If the worker fails to lift the lifting operation according to the operating procedures, it may cause the hook to fall off or miss, causing the goods to fall, and the safety protection performance is low.
A single beam crane with a safety protection mechanism is designed. By setting a pressure sensor at the stress points of the first hook and the second hook, the force state of the hook is monitored in real time and paused when it is not properly connected. to ensure safety protection.
Automatic judgment and real-time monitoring of the hook are realized, safety protection performance is improved, and accidents caused by improper operation are prevented.
Smart Images
Figure CN222181574U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of single-beam cranes, in particular to a single-beam crane with a safety protection mechanism. Background Art
[0002] Electric single-beam crane is a common lifting equipment, usually used for lifting and handling goods in factories, warehouses, docks and other places. It consists of crane body, motor, reducer, beam, wire rope and other parts, which can realize horizontal transportation and vertical lifting. Nowadays, electric single-beam crane plays a vital role in people's cargo transportation and handling work, greatly reducing the pressure of cargo handling. Usually, when carrying out the handling work, it is necessary to manually bundle the goods according to the operating rules and regulations, so it is convenient for the electric single-beam crane to lift and carry it.
[0003] When operating a single-beam crane, if the operation is not carried out according to the operating procedures, if the operator is not trained or if the safety operation regulations are violated, accidents may occur. For example, accidents such as heavy objects falling, squeezing and collision are often related to improper operation.
[0004] At present, when a single-beam crane is hoisting goods, it is unable to automatically determine the hoisting status of the hook. If the workers do not perform the hoisting operation according to the operating procedures, it will not be discovered in time when the hoisting hook falls off or is missed. The goods are prone to fall during the rising or moving process, and the safety protection performance is low. Utility Model Content
[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:
[0006] A single-beam crane with a safety protection mechanism comprises a main beam and a lifting mechanism that translates along the bottom of the main beam; a connecting frame is connected to the bottom of the lifting mechanism, and a first hook is connected to the bottom of the connecting frame; two steel ropes are connected to the first hook, and the bottom ends of the two steel ropes are connected to a detection part, and the detection part is hollow; the bottom ends of the two detection parts are connected to a connecting rope, and the tail ends of the two connecting ropes are connected to a second hook; an electric motor is provided below the main beam, and two ear plates are connected to the top of the motor, and the second hook passes through the corresponding ear plates.
[0007] A controller is connected to the front side of the lifting mechanism. The detection part includes a second pressure sensor. The second pressure sensor is connected to the top wall of the detection part and is connected to the controller.
[0008] A detection plate is provided on the surface of the first hook, and a control seat is connected to the bottom of the detection plate. A groove is provided at the bending part of the first hook, and a first pressure sensor is connected to the bottom wall of the groove. The control seat is connected in the groove and in contact with the first pressure sensor, and the first pressure sensor is connected to the controller.
[0009] A movable seat and a fixed seat are provided in the detection part, the fixed seat is connected to the bottom wall of the detection part, the ends of the steel wire rope and the connecting rope close to each other extend into the detection part, and the end of the steel wire rope is connected to the top of the movable seat, and the top end of the connecting rope is connected to the bottom of the fixed seat.
[0010] The movable seat and the fixed seat are connected with a same elastic member.
[0011] The ends of the movable seat and the fixed seat that are close to each other are both connected with ring plates, and the two ends of the elastic member are respectively connected with the two ring plates.
[0012] The elastic member is a stainless steel tension spring.
[0013] Beneficial Effects
[0014] The utility model provides a single-beam crane with a safety protection mechanism. Compared with the prior art, it has the following beneficial effects:
[0015] 1. The hoisting status of the hook can be automatically judged. If the worker does not perform the hoisting operation according to the operating procedures, it can be discovered in time, which has strong safety protection performance.
[0016] 2. The first pressure sensor and the second pressure sensor are arranged at the stress points of the first hook and the second hook, so as to directly monitor the stress states of the first hook and the second hook. When the first hook and the second hook are not correctly connected, the operation of the lifting mechanism will be suspended and safety protection will be provided therefor. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the three-dimensional structure proposed by the utility model.
[0018] Figure 2 The utility model is a schematic structural diagram of the detection part, steel wire rope, connecting rope, fixed seat, movable seat and tension spring.
[0019] Figure 3 This is a structural schematic diagram of the first hook, the detection plate and the movable seat proposed in the utility model.
[0020] Figure 4 This is a schematic cross-sectional structure diagram of the first hook, detection plate, movable seat and first pressure sensor proposed in the utility model.
[0021] Figure 5 for Figure 1 Enlarged view of point A in the middle.
[0022] The reference numerals in the figure are:
[0023] 10. Main beam;
[0024] 20. Lifting mechanism; 21. Connecting frame; 22. Controller;
[0025] 30. first hook; 31. detection plate; 32. control seat; 33. first pressure sensor; 34. groove;
[0026] 40. Steel wire rope; 41. Detection unit; 42. Moving seat; 43. Connecting rope; 44. Fixed seat; 45. Elastic member; 46. Second pressure sensor; 47. Second hook;
[0027] 50. Electric motor; 51. Ear plate. DETAILED DESCRIPTION
[0028] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0029] The embodiment of the present application provides a single-beam crane with a safety protection mechanism, which solves the problem that the single-beam crane cannot automatically judge the lifting status of the hook. If the workers do not perform the lifting operation according to the operating procedures, the problem of the lifting hook falling off or missing cannot be discovered in time. When in use, real-time monitoring of the second hook 47 and the first hook 30 is achieved to ensure whether each area is connected normally.
[0030] The technical solution in the embodiment of the present application is to solve the above technical problems, and the overall idea is as follows:
[0031] The first pressure sensor 33 and the second pressure sensor 46 are set at the stress points of the first hook 30 and the second hook 47, which can directly monitor the stress status of the first hook 30 and the second hook 47. When the first hook 30 and the second hook 47 are not correctly connected, the operation of the lifting mechanism 20 will be suspended and safety protection will be provided therefor.
[0032] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0033] Reference Figure 1-Figure 5A single-beam crane with a safety protection mechanism includes a main beam 10 and a lifting mechanism 20 that moves along the bottom of the main beam 10, which is used to lift goods. The bottom of the lifting mechanism 20 is connected to a connecting frame 21, and the bottom of the connecting frame 21 is connected to a first hook 30. Two steel wire ropes 40 are connected to the first hook 30. The bottom ends of the two steel wire ropes 40 are connected to a detection part 41, and the detection part 41 is hollow. The bottom ends of the two detection parts 41 are connected to a connecting rope 43, and the tail ends of the two connecting ropes 43 are connected to a second hook 47.
[0034] The two detection parts 41 are respectively connected to the wire rope 40. The use status of the connecting rope 43 and the second hook 47 can be monitored through the detection parts 41. The lifting mechanism 20 adopts the CD type electric hoist produced by Henan Geqian Mechanical and Electrical Equipment Co., Ltd., and the specific model is CD1MD1.
[0035] Reference Figure 5 A motor 50 is provided under the main beam 10, and two ear plates 51 are connected to the top of the motor 50. The second hook 47 passes through the corresponding ear plates 51. The ear plates 51 are made of stainless steel plates. The ear plates 51 on the motor 50 can provide a connection position for the second hook 47 to facilitate lifting.
[0036] Reference Figure 1 and Figure 2 A controller 22 is connected to the front side of the lifting mechanism 20 , and the detection unit 41 includes a second pressure sensor 46 . The second pressure sensor 46 is connected to the top wall of the detection unit 41 and is connected to the controller 22 .
[0037] The controller 22 is used to transmit signals to the first pressure sensor 33 and the second pressure sensor 46. When the first sensor 33 or the second pressure sensor 46 does not sense a pressure value or the pressure value is within an abnormal range, the controller 22 can collect relevant information and control the lifting mechanism 20 to close. The controller 22 adopts a programmable controller with model XD2-24R-E, and the first pressure sensor 33 and the second pressure sensor 46 both adopt a pressure weighing sensor with model AR-DN31.
[0038] Reference Figure 3 and Figure 4 A detection plate 31 is provided on the surface of the first hook 30, and a control seat 32 is connected to the bottom of the detection plate 31. A groove 34 is opened at the bending part of the first hook 30, and a first pressure sensor 33 is connected to the bottom wall of the groove 34. The control seat 32 is connected in the groove 34 and contacts with the first pressure sensor 33, and the first pressure sensor 33 is connected to the controller 22.
[0039] The detection plate 31 provided at the hoisting position of the first hook 30 can be used to monitor the hoisting weight on the wire rope 40. If the hoisting weight does not match the hoisting object, the lifting mechanism 20 cannot be started further. This can ensure whether the wire rope 40 is accurately connected to the hoisting object and whether the wire rope 40 is accurately connected to the first hook 30.
[0040] Reference Figure 2 A movable seat 42 and a fixed seat 44 are provided in the detection part 41. The fixed seat 44 is connected to the bottom wall of the detection part 41. The ends of the wire rope 40 and the connecting rope 43 that are close to each other extend into the detection part 41, and the end of the wire rope 40 is connected to the top of the movable seat 42, and the top of the connecting rope 43 is connected to the bottom of the fixed seat 44.
[0041] The second pressure sensor 46 provided in the detection part 41 is used for monitoring the status of the second hook 47 and the connecting rope 43. If the hoisting weight data of one of the second hooks 47 is missing, the lifting mechanism 20 cannot be started further, so as to ensure whether the second hook 47 is connected to the hoisting object accurately.
[0042] Reference Figure 2 The movable seat 42 and the fixed seat 44 are connected with an elastic member 45 .
[0043] The elastic member 45 is a stainless steel tension spring. The elastic member 45 provides positional support for the movable seat 42 and the fixed seat 44 . When the steel wire rope 40 and the movable seat 42 are not subjected to force, the movable seat 42 does not contact the second pressure sensor 46 .
[0044] Reference Figure 2 The ends of the movable seat 42 and the fixed seat 44 that are close to each other are both connected with ring plates, and the two ends of the elastic member 45 are respectively connected with the two ring plates.
[0045] The ring plate can improve the connection stability between the elastic member 45 and the movable seat 42 and the fixed seat 44 .
[0046] During use, the two second hooks 30 are installed on the ear plate 51 of the motor 50, and the lifting mechanism 20 is turned on. The lifting mechanism 20 controls the connecting frame 21 and the first hook 30 to rise upward, and the first hook 30 pulls the two steel wire ropes 40. The two steel wire ropes 40 drive the two connecting ropes 43 and the second hook 47 to move through the detection part 41. Due to the gravity of the motor 50 itself, when pulling upward, the steel wire rope 40 will first pull the moving seat 42, and the moving seat 42 will pull the elastic member 45. The top of the moving seat 42 contacts the second pressure sensor 46 and applies pressure to its surface. The second pressure sensor 46 sends the pressure data to the controller 22, and the controller 22 determines the value. According to the data, there is no abnormality. If the second hook 47 is not connected to the ear plate 51, the second pressure sensor 46 cannot detect the squeezing force brought by the moving seat 42, and the controller 22 will control the lifting mechanism 20 to close. Similarly, when the first hook 30 is lifting, the wire rope 40 transfers the gravity of the motor 50 to the detection plate 31, and the detection plate 31 is forced to squeeze the first pressure sensor 33. The first pressure sensor 33 sends the pressure data to the controller 22. The controller 22 determines that the data is normal. If there is an abnormality in the connection between the first hook 30 and the wire rope 40, the first pressure sensor 33 cannot detect the squeezing force brought by the control seat 32, and the controller 22 will also control the lifting mechanism 20 to close.
[0047] In summary, compared with the prior art, the present invention has the following beneficial effects:
[0048] The second pressure sensor 46 provided in the detection unit 41 is used to monitor the status of the second hook 47 and the connecting rope 43. If the hoisting weight data of one of the second hooks 47 is missing, the lifting mechanism 20 cannot be started further, thereby ensuring that the second hook 47 is accurately connected to the hoisted object.
[0049] The detection plate 31 set at the hoisting position of the first hook 30 can be used to monitor the hoisting weight on the wire rope 40. If the hoisting weight does not match the hoisting object, the lifting mechanism 20 cannot be started further. This can ensure whether the wire rope 40 is accurately connected to the hoisting object and whether the wire rope 40 is accurately connected to the first hook 30.
[0050] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0051] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A single-beam crane with a safety protection mechanism, characterized in that: include: A main beam (10) and a lifting mechanism (20) that moves along the bottom of the main beam (10); The bottom of the lifting mechanism (20) is connected to a connecting frame (21), and the bottom of the connecting frame (21) is connected to a first lifting hook (30); The first hook (30) is connected to two steel wire ropes (40), the bottom ends of the two steel wire ropes (40) are both connected to a detection portion (41), and the detection portion (41) is hollow; The bottom ends of the two detection parts (41) are connected to a connecting rope (43), and the tail ends of the two connecting ropes (43) are connected to a second hook (47); An electric motor (50) is provided below the main beam (10), the top of the electric motor (50) is connected to two ear plates (51), and the second hook (47) passes through the corresponding ear plates (51).
2. A single-beam crane with a safety protection mechanism according to claim 1, characterized in that: The front side of the lifting mechanism (20) is connected to a controller (22), and the detection portion (41) includes a second pressure sensor (46), and the second pressure sensor (46) is connected to the top wall of the detection portion (41) and is connected to the controller (22).
3. A single-beam crane with a safety protection mechanism according to claim 2, characterized in that: A detection plate (31) is provided on the surface of the first hook (30), and a control seat (32) is connected to the bottom of the detection plate (31). A groove (34) is provided at the bending part of the first hook (30), and a first pressure sensor (33) is connected to the bottom wall of the groove (34). The control seat (32) is connected in the groove (34) and in contact with the first pressure sensor (33), and the first pressure sensor (33) is connected to the controller (22).
4. A single-beam crane with a safety protection mechanism according to claim 1, characterized in that: A movable seat (42) and a fixed seat (44) are provided in the detection portion (41); the fixed seat (44) is connected to the bottom wall of the detection portion (41); the ends of the steel wire rope (40) and the connecting rope (43) that are close to each other extend into the detection portion (41); the end of the steel wire rope (40) is connected to the top of the movable seat (42); and the top end of the connecting rope (43) is connected to the bottom of the fixed seat (44).
5. A single-beam crane with a safety protection mechanism according to claim 4, characterized in that: The movable seat (42) and the fixed seat (44) are connected with a common elastic member (45).
6. A single-beam crane with a safety protection mechanism according to claim 5, characterized in that: The ends of the movable seat (42) and the fixed seat (44) that are close to each other are both connected to ring plates, and the two ends of the elastic member (45) are respectively connected to the two ring plates.
7. The single-beam crane with a safety protection mechanism according to claim 5, characterized in that: The elastic member (45) is a stainless steel tension spring.