Upgoing limiting device and crane adopting same
By installing an upward limiting device on the crane and limiting the sling with a blocker, the problems of sling falling off and objects falling caused by misoperation of the crane are solved, which significantly improves the safety of the crane.
Patent Information
- Application Number
- CN202421322111.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-06-11
AI Technical Summary
When the crane is lifting goods, the operator's misoperation caused by fatigue or inattention may cause the sling to fall and the lifting objects to fall, which poses serious safety hazards.
Design an upward limiting device, including a connecting frame and a blocker, the connecting frame is fixedly connected to the boom, the blocker is arranged below the boom, the sling passes through the through hole in the blocker, and the blocker limits the sling to prevent it from continuing to rise.
Through the setting of the upward limiting device, the lifting object is subject to a limiting effect when rising, avoiding the sling falling off and the object falling, which significantly improves the safety of the crane use.
Smart Images
Figure CN222512766U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of crane equipment, and in particular to an upward limiting device and a crane using the device. Background Art
[0002] At construction sites, cranes, as important vertical transportation tools, are widely used in lifting operations of various materials.
[0003] However, there are still some safety hazards in the cranes currently used in construction sites. Specifically, when the crane is lifting goods, if the operator makes a mistake due to fatigue or a slight lack of concentration, and continues to lift the object after lifting it to the top, the crane's sling may fall off and the object may fall, causing a serious accident.
[0004] Therefore, how to effectively solve this problem and improve the safety of crane use has become a technical problem that needs to be urgently solved in the current construction field. Utility Model Content
[0005] In order to solve the problem that the hoisted object can continue to be lifted after being lifted to the top, the present application provides an upward limiting device and a crane using the device.
[0006] On the one hand, the present application provides an upward limit device, which adopts the following technical solution:
[0007] An upward limit device for a crane comprises a connecting frame and a blocker; the connecting frame is used to be fixedly connected to a boom; the blocker is fixedly connected to the connecting frame, and the blocker is arranged below the boom through the connecting frame, and the blocker is provided with a through hole for a sling to pass through.
[0008] By adopting the above technical solution, the object to be hoisted can be limited when it is rising due to the action of the blocker, thereby preventing the sling from falling off and causing the object to fall, thereby ensuring the safety of the hoisting.
[0009] Preferably, the connecting frame includes a transverse section and a vertical section, the transverse section is arranged above the boom and fixedly connected to the boom, the vertical section extends to the bottom of the boom, and the blocker is arranged below the vertical section.
[0010] By adopting the above technical solution, the horizontal segment can ensure the stability of the connection between the connecting frame and the boom, and the setting of the vertical segment can reserve a certain safety distance, thereby reducing the probability of the hoisted object falling due to excessive lifting.
[0011] Preferably, an abutment plate is provided on the transverse section, and the abutment plate is used to abut against the top surface of the boom.
[0012] By adopting the above technical solution, the arrangement of the abutment plate can further improve the stability of the connecting frame.
[0013] Preferably, the barrier is cylindrical and vertically arranged, and both lateral sides of the barrier are fixedly connected to the connecting frame; the sling passes through the inside of the barrier.
[0014] By adopting the above technical solution, the cylindrical blocker can better block the hoisted objects and prevent the hoisted objects from falling due to excessive lifting.
[0015] Preferably, a contact plate is fixed to the bottom end of the blocker.
[0016] By adopting the above technical solution, the contact plate can play a better blocking role on the hoisted object, thereby preventing the hoisted object from being over-lifted.
[0017] Preferably, the contact plate is arranged in an arc shape, and the concave surface of the contact plate faces downward.
[0018] By adopting the above technical solution, the arc-shaped contact plate can provide a certain degree of protection for the hoisted object, reduce the probability of damage to the hoisted object due to collision, thereby ensuring the normal use of the hoisted object and reducing economic losses.
[0019] On the other hand, the present application provides a crane, which adopts the following technical solution:
[0020] A crane comprises a boom, a sling and an upward limit device for the crane, wherein the connecting frame is fixedly connected to the boom; the connecting frame is arranged in an L shape, one end of the connecting frame is located above the boom, and the other end extends to the bottom of the boom.
[0021] By adopting the above technical solution, the setting of the barrier can ensure that the crane can effectively prevent wire rope breakage and object falling accidents caused by operational errors during the lifting process, which significantly improves the safety of crane use.
[0022] Preferably, it further comprises a fixed pulley arranged on the boom, and the fixed pulley is located between the two ends of the connecting frame.
[0023] By adopting the above technical solution, the setting of the fixed pulley can effectively change the direction of the sling, so that it can pass through the blocker more smoothly, thereby improving the working efficiency and convenience of the crane. At the same time, the fixed pulley can also reduce the friction and wear of the sling during the turning process, thereby extending its service life.
[0024] In summary, the present application includes at least one of the following beneficial technical effects:
[0025] 1. When the sling is lifted, it will pass through the through hole on the blocker. Once the sling is lifted to a certain height and reaches the position of the blocker, the blocker will limit the sling and prevent it from continuing to lift upward. In this way, even if the operator makes an error due to fatigue or a slight lack of concentration, it will not cause the wire rope to break and objects to fall, thereby improving the safety of crane use. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a structural schematic diagram of the upward limit device for the crane in Example 1 of the present application;
[0027] Figure 2 It is a schematic structural diagram of the upward limit device for a crane after a contact plate is added in Example 1 of the present application.
[0028] Figure 3 It is a structural schematic diagram of the crane in Example 2 of the present application.
[0029] Markings in the attached drawings: 1, connecting frame; 11, horizontal section; 12, vertical section; 13, abutment plate; 2, blocker; 3, contact plate; 4, boom; 5, sling; 6, fixed pulley. DETAILED DESCRIPTION
[0030] The following is combined with Figure 1-3 This application is described in further detail.
[0031] Example 1
[0032] This embodiment discloses an upward limit device for a crane, referring to Figure 1 The upward limiting device for the crane includes a connecting frame 1 and an arrester 2. The connecting frame 1 is used to be fixedly connected to the boom 4 to ensure the stability and reliability of the device. The arrester 2 is fixedly connected to the connecting frame 1 and is arranged under the boom 4 through the connecting frame 1. The arrester 2 is provided with a through hole for the sling 5 to pass through, so that the sling 5 can pass through smoothly. The hoisted object is connected to the sling 5, thereby realizing the lifting of the hoisted object. Due to the action of the arrester 2, the hoisted object can be limited when rising, thereby preventing the sling 5 from falling off and causing the hoisted object to fall.
[0033] The connecting frame 1 includes a transverse section 11 and a vertical section 12. The transverse section 11 is arranged above the boom 4 and fixedly connected to the boom 4. The vertical section 12 extends to the bottom of the boom 4, and the blocker 2 is arranged below the vertical section 12. This structure enables the connecting frame 1 to be fixed on the boom 4 more stably, while ensuring that the blocker 2 can limit the sling 5 more effectively. The fixed connection between the transverse section 11 and the boom 4 increases the contact area between the connecting frame 1 and the boom 4, thereby improving the stability and reliability of the connection. The extension of the vertical section 12 enables the blocker 2 to be accurately arranged below the boom 4, ensuring that the sling 5 can be effectively limited when it is lifted.
[0034] An abutment plate 13 is provided on the transverse section 11, and the abutment plate 13 is used to abut against the top surface of the boom 4. The provision of the abutment plate 13 further enhances the connection stability between the connecting frame 1 and the boom 4. It can not only increase the contact area between the connecting frame 1 and the boom 4, but also more firmly fix the connecting frame 1 on the boom 4 by abutment, thereby ensuring that the upward limit device can maintain a stable working state during the entire lifting process.
[0035] The blocker 2 is cylindrical and vertically arranged, and its two lateral sides are fixedly connected to the connecting frame 1. The sling 5 passes through the inside of the blocker 2. This design not only enables the blocker 2 to effectively limit the sling 5, but also reduces the friction and damage to the sling 5. The cylindrical blocker 2 has a smooth inner wall, which can reduce the friction resistance of the sling 5 when passing through, thereby improving the lifting efficiency and the service life of the sling 5.
[0036] Furthermore, a contact plate 3 is fixed at the bottom end of the blocker 2. The provision of the contact plate 3 increases the contact area between the blocker 2 and the sling 5, making the limiting effect more accurate and stable. At the same time, the contact plate 3 can also play a certain protective role on the sling 5, reducing the damage that may be suffered during the limiting process.
[0037] The contact plate 3 is arranged in an arc shape, and its concave surface faces downward. This arc structure enables the contact plate 3 to better adapt to the shape of the sling 5, thereby providing a more fitting support during the limiting process. The arc-shaped contact surface can reduce friction and wear, reduce the energy loss of the sling 5 during the limiting process, and further improve the efficiency and safety of lifting.
[0038] The implementation principle of the embodiment 1 is as follows: when the sling 5 is lifted, it will pass through the through hole on the blocker 2. Once the sling 5 is lifted to a certain height and reaches the position of the blocker 2, the blocker 2 will limit the sling 5 and prevent it from continuing to lift upward. In this way, even if the operator makes an error operation due to fatigue or a slight lack of concentration, it will not cause the wire rope to break and the object to fall, thereby improving the safety of the crane.
[0039] Example 2
[0040] The present embodiment discloses a crane, which is characterized in that the upward limit device for the crane in the aforementioned embodiment is integrated. The crane includes a boom 4, a sling 5, and the upward limit device in Example 1. The transverse section 11 of the connecting frame 1 is located above the boom 4 and is fixedly connected to the boom 4, and the vertical section 12 is located on one side of the boom 4, and one end of the vertical section 12 extends to the bottom of the boom 4 to ensure its structural stability and functional reliability. Through this design, the crane can effectively prevent wire rope breakage and object falling accidents caused by operational errors during the lifting process, which significantly improves the safety of the crane.
[0041] Furthermore, a fixed pulley 6 is provided on the boom 4, and the fixed pulley 6 is located between the two ends of the connecting frame 1. The provision of the fixed pulley 6 can effectively change the direction of the sling 5, so that it passes through the blocker 2 more smoothly, thereby improving the working efficiency and convenience of the crane. At the same time, the fixed pulley 6 can also reduce the friction and wear of the sling 5 during the turning process, thereby extending its service life.
[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application. Through the detailed description of the above embodiments, those skilled in the art can clearly understand the technical solutions and beneficial effects of the present application, and can flexibly apply them according to actual conditions.
Claims
1. An upward limit device, characterized in that: The invention comprises a connecting frame (1) and a blocker (2); the connecting frame (1) is used for being fixedly connected to a boom (4); the blocker (2) is fixedly connected to the connecting frame (1), and the blocker (2) is arranged below the boom (4) through the connecting frame (1); and the blocker (2) is provided with a through hole for a sling (5) to pass through.
2. The upward limit device according to claim 1, characterized in that: The connecting frame (1) comprises a transverse section (11) and a vertical section (12), wherein the transverse section (11) is arranged above the boom (4) and is fixedly connected to the boom (4), the vertical section (12) extends to below the boom (4), and the blocker (2) is arranged below the vertical section (12).
3. The upward limit device according to claim 2, characterized in that: The transverse section (11) is provided with an abutment plate (13), and the abutment plate (13) is used to abut against the top surface of the boom (4).
4. The upward limit device according to claim 1, characterized in that: The blocker (2) is cylindrical and arranged vertically, and both lateral sides of the blocker (2) are fixedly connected to the connecting frame (1); the sling (5) passes through the inside of the blocker (2).
5. The upward limit device according to claim 4, characterized in that: A contact plate (3) is fixed to the bottom end of the blocker (2).
6. The upward limit device according to claim 5, characterized in that: The contact plate (3) is arranged in an arc shape, and the concave surface of the contact plate (3) faces downwards.
7. A crane, characterized in that: It comprises a boom (4), a sling (5) and the upward limit device according to any one of claims 1 to 6, wherein the connecting frame (1) is fixedly connected to the boom (4); the connecting frame (1) is arranged in an L shape, one end of the connecting frame (1) is located above the boom (4), and the other end extends to the bottom of the boom (4).
8. The crane according to claim 7, characterized in that: It also includes a fixed pulley (6) arranged on the suspension arm (4), and the fixed pulley (6) is located between the two ends of the connecting frame (1).