Tower crane climbing self-locking device
By designing a self-locking device for tower crane climbing, the problem of low safety during tower crane climbing is solved by utilizing the contact between the self-locking rod and the limiting protrusion, as well as the cooperation of the elastic element, thus enabling flexible movement and continuous protection for operators.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHIJIAZHUANG QIANCHENG ELECTRIC APPLIANCE CO LTD
- Filing Date
- 2025-05-09
- Publication Date
- 2026-04-17
AI Technical Summary
The safety issues during tower crane climbing are quite prominent. Traditional safety belts lack flexibility and are difficult to deal with emergencies during climbing, resulting in a high risk of falls for operators.
A self-locking device for tower crane climbing was designed, including a main body, a self-locking rod, a first elastic element, and a clamping structure. By rotating the self-locking rod and abutting against the limiting protrusion, combined with the cooperation of the elastic element and the locking element, the device can achieve safe locking and flexible movement of the operator.
It provides continuous safety protection during climbing to prevent accidental falls, and improves ease of operation and safety through the combination of elastic elements and locking structures.
Smart Images
Figure CN224132610U_ABST
Abstract
Description
Technical Field
[0001] The embodiments disclosed herein relate to the field of safety equipment technology, and more specifically, to a tower crane climbing self-locking device. Background Technology
[0002] In the modern construction industry, tower cranes, as indispensable vertical transportation equipment, are widely used in various high-rise buildings and large-scale engineering projects. With the continuous advancement of urban construction, the height and scale of buildings are increasing daily, leading to a rise in the frequency of tower crane usage. In the daily maintenance, operation, and related work of tower cranes, operators frequently need to climb the cranes to perform equipment inspections, repairs, and adjustments.
[0003] However, safety issues during tower crane climbing are currently quite prominent. Existing safety measures mostly rely on traditional safety belts connected to fasteners on standard tower crane sections, but this method has many drawbacks. Firstly, safety belts lack flexibility in practical use. When operators need to move frequently or adjust their posture during climbing, the restraint of the safety belt may restrict their movement, leading to inconvenience and affecting work efficiency. Secondly, existing connection and fixing methods are ill-suited to handle emergencies. In emergency situations such as tower crane swaying or operator accidental falls, traditional safety belts may not be able to lock quickly and effectively, exposing operators to a significant risk of falling from heights. Utility Model Content
[0004] To overcome the above-mentioned defects, the embodiments of this disclosure provide a tower crane climbing self-locking device, which solves the technical problem of insufficient protection measures and low safety for operators when climbing tower cranes in the prior art.
[0005] According to one aspect, at least one embodiment of this disclosure provides a tower crane climbing self-locking device for preventing operators from falling while climbing a tower crane, the tower crane having a climbing rail having a plurality of limiting protrusions, including:
[0006] The main body is slidably mounted on the climbing rail;
[0007] A self-locking rod, which is rotatably mounted on the main body;
[0008] The self-locking rod has an abutment part at one end near the climbing rail and a traction part at the other end. The traction part is used to connect to the operator via a rope.
[0009] The self-locking rod is arranged such that when the operator falls, the self-locking rod rotates, causing the abutment portion to abut against the limiting protrusion, thereby limiting the position of the main body and the climbing rail.
[0010] For example, a tower crane climbing self-locking device provided in at least one embodiment of this disclosure further includes:
[0011] The first elastic element has two ends that act on the self-locking rod and the main body, respectively, to provide a force that moves the abutting part away from the main body, so that the abutting part abuts against the limiting protrusion.
[0012] For example, in at least one embodiment of this disclosure, a tower crane climbing self-locking device includes the following main body:
[0013] A first clamping member, wherein the self-locking rod is rotatably mounted on the first clamping member; the two ends of the first elastic member act on the first clamping member and the self-locking rod respectively; the first clamping member also has a first clamping part;
[0014] A guide post is disposed on one side of the first clamping member;
[0015] The second clamp is slidably disposed on the guide post. The second clamp has a second clamping part, and a clamping space is formed between the first clamping part and the second clamping part.
[0016] The clamping space is arranged such that after the climbing rail enters the clamping space, the second clamp slides close to the first clamp to prevent the climbing rail from leaving the clamping space.
[0017] For example, in a tower crane climbing self-locking device provided in at least one embodiment of this disclosure, the guide column has a locking surface and further includes:
[0018] A locking element, which is slidably disposed on the second clamping member, and the locking element has a locking part;
[0019] When the locking member is arranged to slide, the locking part abuts against or releases from the locking surface; after the locking part abuts against the locking surface, it is used to lock the positions of the first clamp and the second clamp.
[0020] For example, a tower crane climbing self-locking device provided in at least one embodiment of this disclosure further includes:
[0021] The second elastic element has two ends that act on the locking element and the second clamping element respectively, and is used to provide a force for the locking part to abut against the locking surface.
[0022] For example, in a tower crane climbing self-locking device provided in at least one embodiment of this disclosure, the second clamp has a mounting groove, and the locking member is slidably disposed in the mounting groove.
[0023] For example, a tower crane climbing self-locking device provided in at least one embodiment of this disclosure further includes:
[0024] A cover plate, which is disposed on the second clamp, is used to cover the mounting groove;
[0025] A toggle element, one end of which is disposed on the locking element, and the other end of which passes through the cover plate and is located outside the mounting groove.
[0026] For example, in a tower crane climbing self-locking device provided in at least one embodiment of this disclosure, the actuating member has a snap-fit surface at one end outside the mounting groove, and further includes:
[0027] A snap-fit rod, which is rotatably mounted on the cover plate, has a snap-fit portion;
[0028] The latching part is arranged such that after the latching rod rotates, the latching part abuts against or releases from the latching surface; after the latching part abuts against the latching surface, it is used to limit the position of the actuating member and the cover plate.
[0029] For example, in a tower crane climbing self-locking device provided in at least one embodiment of this disclosure, the actuating member has a sliding groove, one end of which is connected to the locking surface; the locking part has a locking groove, and further includes:
[0030] A snap-fit connector, wherein the snap-fit connector is slidably disposed within the slide groove;
[0031] A third elastic element is disposed in the slide groove, and the two ends of the third elastic element act on the inner wall of the slide groove and the snap-fit element respectively, for providing the snap-fit element to extend out of the slide groove;
[0032] After the latching member enters the latching slot, it is used to restrict the position of the toggle member and the latching rod.
[0033] For example, in a tower crane climbing self-locking device provided in at least one embodiment of this disclosure, the locking member is a sphere and the locking groove is a spherical groove.
[0034] The beneficial effects of the embodiments disclosed herein are as follows:
[0035] The structure disclosed herein ensures that the operator remains under constant safety protection during climbing. During normal climbing, the locked state of the self-locking bar effectively prevents accidental falls. Even if the operator suddenly loses balance, the tight contact between the abutment and the limiting protrusion quickly prevents the main body from sliding down. Furthermore, by actively controlling the rotation of the self-locking bar by pulling the traction rope, the operator can move flexibly during climbing, significantly improving the convenience and safety of operation compared to traditional safety harness protection methods. Attached Figure Description
[0036] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.
[0037] Figure 1 This is a schematic diagram of the structure of a tower crane climbing self-locking device in one embodiment of the present disclosure;
[0038] Figure 2 for Figure 1 A schematic diagram of the internal structure of a tower crane climbing self-locking device in one embodiment;
[0039] Figure 3 for Figure 1 A schematic diagram of another state structure of a tower crane climbing self-locking device in one embodiment;
[0040] Figure 4 for Figure 1 Another cross-sectional structural diagram of a tower crane climbing self-locking device in one embodiment;
[0041] Figure 5 for Figure 4 Enlarged view of point A in the middle;
[0042] Figure 6 for Figure 1 A schematic diagram of the third cross-sectional structure of a tower crane climbing self-locking device in one embodiment;
[0043] Figure 7 for Figure 6 Enlarged view of section B in the middle.
[0044] In the diagram: 1. Main body; 2. Self-locking rod; 201. Abutment part; 202. Traction part; 3. First elastic element; 101. First clamping element; 1011. First clamping part; 4. Guide post; 102. Second clamping element; 1021. Second clamping part; 103. Clamping space; 401. Locking surface; 5. Locking element; 501. Locking part; 6. Second elastic element; 1022. Mounting groove; 7. Cover plate; 8. Actuating element; 801. Snap-fit surface; 9. Snap-fit rod; 901. Snap-fit part; 802. Slide groove; 902. Snap-fit groove; 10. Snap-fit element; 11. Third elastic element. Detailed Implementation
[0045] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.
[0046] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."
[0047] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.
[0048] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0049] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.
[0050] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0051] like Figures 1-7As shown, a tower crane climbing self-locking device according to an embodiment of the present disclosure is provided to prevent operators from falling while climbing the tower crane. The tower crane has a climbing rail with several limiting protrusions, including a main body 1, which is slidably mounted on the climbing rail; a self-locking rod 2 is rotatably mounted on the main body 1; the self-locking rod 2 has an abutment part 201 at one end near the climbing rail and a traction part 202 at the other end, which is connected to the operator via a rope; when the operator falls, the self-locking rod 2 rotates, causing the abutment part 201 to abut against the limiting protrusions, thereby limiting the position of the main body 1 relative to the climbing rail.
[0052] For example, such as Figure 1 As shown, to address the technical problem of insufficient protective measures and low safety for operators climbing tower cranes in existing technologies, in actual tower crane construction sites, climbing rails are vertically installed along the tower crane body, with several evenly distributed limiting protrusions on them. The self-locking rod 2 is mounted on the main body 1 via a rotating shaft. The abutment part 201 is block-shaped to ensure tight contact with the limiting protrusions. The traction part 202 is a metal rod with a ring, connected to the operator's safety harness via a high-strength rope.
[0053] Specifically, before climbing the tower crane, the operator first installs the self-locking device body 1 onto the climbing rail, allowing it to slide smoothly along the rail. Next, one end of the rope is connected to the loop of the traction part 202, and the other end is securely fastened to the operator's safety harness. During normal climbing, the self-locking rod 2 is locked, and the abutment part 201 is tightly in contact with the limiting protrusions on the climbing rail, preventing the body 1 from sliding freely on the rail. When the operator needs to climb the distance between one or more limiting protrusions, they pull the traction rope by hand. The traction rope drives the traction part 202, causing the self-locking rod 2 to rotate around the rotating axis, separating the abutment part 201 from the limiting protrusion. At this time, the operator uses the strength of their hands and feet to pull the body 1 upwards on the climbing rail until reaching the target limiting protrusion. Upon arrival, the operator releases the traction rope. Under the action of gravity and the self-resetting structure of the self-locking rod 2 (such as a torsion spring), the self-locking rod 2 reverses, and the abutment part 201 abuts tightly against the new limiting protrusion again, re-limiting the position of the main body 1 on the climbing rail, thus completing one climbing action.
[0054] The advantage lies in the fact that this structural design ensures the operator remains under constant safety protection during climbing. During normal climbing, the locked state of the self-locking bar 2 effectively prevents accidental falls. Even if the operator suddenly loses balance, the tight contact between the abutment part 201 and the limiting protrusion quickly prevents the main body 1 from sliding down. Furthermore, by actively controlling the rotation of the self-locking bar 2 by pulling the traction rope, the operator can move flexibly during climbing, significantly improving the convenience and safety of operation compared to traditional safety belt protection methods.
[0055] In some examples, a first elastic element 3 is also included, with its two ends acting on the self-locking rod 2 and the main body 1 respectively, to provide a force that moves the abutment portion 201 away from the main body 1, so that the abutment portion 201 abuts against the limiting protrusion.
[0056] For example, such as Figure 2 As shown, one end of the first elastic element 3 is fixed to the main body 1 near the rotating shaft to ensure a secure connection. The other end is connected to the side of the self-locking rod 2 near the traction part 202. The spring has a certain preload during installation, so that it always provides a force to the self-locking rod 2 to keep the abutment part 201 away from the main body 1.
[0057] Specifically, during normal climbing, the elastic force of the first elastic element 3 acts on the self-locking rod 2, causing the abutment part 201 to press tightly against the limiting protrusion, further enhancing the reliability of the locking. When the operator pulls the traction rope, the elastic force of the first elastic element 3 must be overcome to rotate the self-locking rod 2, causing the abutment part 201 to separate from the limiting protrusion. After the operator releases the traction rope, the elastic force of the first elastic element 3 quickly reverses the self-locking rod 2, and the abutment part 201 quickly and accurately re-engages with the limiting protrusion. Throughout the entire climbing process, the first elastic element 3 always ensures sufficient contact pressure between the abutment part 201 and the limiting protrusion, preventing the abutment part 201 from accidentally disengaging from the limiting protrusion even under slight swaying of the tower crane.
[0058] The advantage lies in the fact that the first elastic element 3 greatly improves the safety and stability of the self-locking device. By providing additional elasticity, it enhances the friction between the abutment 201 and the limiting protrusion, effectively preventing locking failure due to vibration or accidental collisions during climbing. Simultaneously, after the operator releases the traction rope, the self-locking lever 2 can quickly reset, ensuring continuous safety protection for the operator during climbing.
[0059] In some examples, the main body 1 includes a first clamp 101, a self-locking rod 2 rotatably mounted on the first clamp 101; a first elastic member 3 with its two ends acting on the first clamp 101 and the self-locking rod 2 respectively; the first clamp 101 also has a first clamping portion 1011; a guide post 4 is disposed on one side of the first clamp 101; a second clamp 102 is slidably mounted on the guide post 4, the second clamp 102 has a second clamping portion 1021, and a clamping space 103 is formed between the first clamping portion 1011 and the second clamping portion 1021; after the climbing rail enters the clamping space 103, the second clamp 102 slides close to the first clamp 101 to prevent the climbing rail from leaving the clamping space 103.
[0060] For example, such as Figure 3As shown, the main body 1 consists of a first clamping member 101 and a second clamping member 102, both made of high-strength steel plates through cutting, bending, and welding processes. The first clamping member 101 is equipped with a rotating seat for mounting the self-locking rod 2 and a spring seat for mounting the first elastic element 3. The first clamping part 1011 is U-shaped, matching the shape of the climbing rail, and its surface is treated with anti-slip treatment, such as knurling or spraying an anti-slip coating. The guide post 4 is a solid stainless steel rod, vertically fixed to one side of the first clamping member 101 by welding or bolting. The second clamping member 102 is provided with sliding holes that mate with the guide post 4. The second clamping part 1021 is also U-shaped, positioned opposite the first clamping part 1011, together forming the clamping space 103.
[0061] Specifically, when installing the self-locking device, the second clamp 102 is first slid away from the first clamp 101 to expand the clamping space. Then, the climbing rail is aligned with the clamping space 103, and the second clamp 102 is pushed to slide along the guide post 4 closer to the first clamp 101, so that the climbing rail is clamped within the clamping space 103. At this time, the first clamping part 1011 and the second clamping part 1021 are in close contact with the climbing rail. During the operator's climbing process, the main body 1 is stably connected to the climbing rail through the first clamp 101 and the second clamp 102, and can normally move with the operator. When the operator pulls the traction rope to rotate the self-locking rod 2, the abutment part 201 separates from the limiting protrusion, and the operator can pull the main body 1 upward on the climbing rail. After reaching the new position, the traction rope is released, the self-locking rod 2 returns to its original position, the abutment part 201 abuts against the new limiting protrusion, and the clamping structure still ensures the stable connection between the main body 1 and the climbing rail.
[0062] The advantage lies in the fact that the clamping structure design makes the connection between the self-locking device and the climbing rail more secure. It not only provides additional fixing force to prevent the main body 1 from wobbling or accidentally falling off the climbing rail, but also accommodates minor deformations of the climbing rail to a certain extent. Combined with the locking structure of the self-locking rod 2, it further improves the safety and reliability of the self-locking device during climbing, ensuring effective protection for operators under various working conditions.
[0063] In some examples, the guide post 4 has a locking surface 401 and also includes a locking member 5, which is slidably disposed on the second clamp 102. The locking member 5 has a locking part 501. After the locking member 5 slides, the locking part 501 abuts against or releases from the locking surface 401. After the locking part 501 abuts against the locking surface 401, it is used to lock the positions of the first clamp 101 and the second clamp 102.
[0064] For example, such as Figures 3-5As shown, the locking surface 401 of the guide post 4 is a ground plane with low surface roughness to ensure good contact with the locking part 501. The locking member 5 is a wedge-shaped block with an inclined surface. The locking member 5 is slidably mounted on the second clamp 102. The locking part 501 is the inclined surface of the wedge-shaped block, which cooperates with the locking surface 401. When the locking part 501 abuts against the locking surface 401, it prevents the second clamp 102 from sliding on the guide rod 4, thus restricting the position of the first clamp 101 and the second clamp 102.
[0065] Specifically, after the climbing rail is installed into the clamping space 103, the locking member 5 is pushed to slide, and the locking part 501 gradually contacts and abuts against the locking surface 401 of the guide post 4. As the locking member 5 continues to be pushed, the locking part 501 contacts the locking surface 401, finally locking the relative positions of the first clamp 101 and the second clamp 102 securely, preventing the second clamp 102 from accidentally sliding on the guide post 4. When it is necessary to remove the self-locking device, the locking member 5 is pulled in the opposite direction to release the locking part 501 from the locking surface 401, so that the second clamp 102 can be slid away from the first clamp 101, and the self-locking device can be removed from the climbing rail.
[0066] The advantage is that the locking element 5 further enhances the stability and reliability of the clamping structure. By cooperating with the locking surface 401 of the guide post 4, it provides a reliable locking method, preventing the second clamp 102 from loosening due to vibration, collision, or other factors during use, thereby ensuring the firmness of the connection between the self-locking device and the climbing rail.
[0067] In some examples, a second elastic member 6 is also included, with its two ends acting on the locking member 5 and the second clamping member 102 respectively, to provide a force for the locking part 501 to abut against the locking surface 401.
[0068] For example, such as Figure 5 As shown, the second elastic element 6 is installed in the mounting hole on the second clamp 102, and the other end abuts against the locking element 5. When installing the locking element 5, the second elastic element 6 is first compressed, and then the locking element 5 is installed into the dovetail groove, so that the second elastic element 6 always applies a thrust to the locking element 5 in the direction of the locking surface 401.
[0069] Specifically, after the locking member 5 abuts against the locking surface 401, the elastic force of the second elastic member 6 continues to act on the locking member 5, ensuring that the locking part 501 and the locking surface 401 are tightly fitted. Even if the tower crane sways or is subjected to a certain impact, the second elastic member 6 can prevent the locking member 5 from sliding accidentally, maintaining the locked state of the first clamp 101 and the second clamp 102. When it is necessary to unlock, the operator needs to overcome the elastic force of the second elastic member 6 and push the locking member 5 to release it from contact with the locking surface 401.
[0070] The advantage is that the presence of the second elastic element 6 provides continuous elastic force, ensuring tight contact between the locking part 501 and the locking surface 401, effectively preventing locking failure caused by external factors. At the same time, when the operator unlocks the device, the elastic force of the second elastic element 6 can also provide some feedback, allowing the operator to accurately control the operating force.
[0071] In some examples, the second clamp 102 has a mounting groove 1022, and the locking member 5 is slidably disposed within the mounting groove 1022.
[0072] For example, such as Figure 5 As shown, the mounting groove 1022 on the second clamp 102 is a rectangular groove, which is longer than the locking member 5 and slightly deeper than the thickness of the locking member 5, so as to ensure that the locking member 5 can slide smoothly in the groove.
[0073] The advantage is that it prevents the locking element 5 from shifting or coming out during use, ensuring the normal operation of the locking structure. It also reduces the possibility of accidental activation.
[0074] In some examples, a cover plate 7 is also included, which is disposed on the second clamp 102 to cover the mounting groove 1022; one end of the toggle member 8 is disposed on the locking member 5, and the other end of the toggle member 8 passes through the cover plate 7 and is located outside the mounting groove 1022.
[0075] For example, such as Figures 5-7 As shown, the cover plate 7 is bolted to the second clamp 102, completely covering the mounting groove 1022. A through hole is provided on the cover plate 7 for the actuating element 8 to pass through. One end of the actuating element 8 is fixed to the locking element 5 by welding or bolting, and the other end extends out of the mounting groove 1022 through the small hole in the cover plate 7. A handle is installed on the protruding end of the actuating element 8, allowing the operator to control the sliding of the locking element 5 by actuating the handle.
[0076] Specifically, the operator pushes or pulls the lever 8, which extends out of the mounting groove 1022, thereby causing the locking member 5 to slide within the mounting groove 1022. When it is necessary to unlock, pulling the lever 8 disengages the locking part 501 from the locking surface 401. The cover plate 7 protects the components within the mounting groove 1022, preventing dust and debris from entering and affecting the sliding of the locking member 5.
[0077] In some examples, the actuating element 8 has a snap-fit surface 801 at one end outside the mounting groove 1022, and also includes a snap-fit rod 9, which is rotatably mounted on the cover plate 7. The snap-fit rod 9 has a snap-fit portion 901. After the snap-fit rod 9 rotates, the snap-fit portion 901 abuts against or releases from the snap-fit surface 801. After the snap-fit portion 901 abuts against the snap-fit surface 801, it is used to limit the position of the actuating element 8 and the cover plate 7.
[0078] For example, such as Figure 7 As shown, the locking rod 9 is rotatably mounted on the cover plate 7 via a pin. The locking part 901 is a protrusion, and the locking surface 801 is a groove that matches the locking part 901, located on the actuating member 8. A torsion spring is installed at the rotation shaft of the locking rod 9, with one end fixed to the locking rod 9 and the other end fixed to the cover plate 7, so that when there is no external force, the locking part 901 always tends to abut against the locking surface 801.
[0079] Specifically, after the locking part 501 abuts against the locking surface 401, the locking lever 9 is rotated, causing the locking part 901 to abut tightly against the locking surface 801 under the action of the torsion spring, thus restricting the position of the actuating member 8 and preventing it from accidentally sliding and causing the locking part 501 to disengage from the locking surface 401. When it is necessary to unlock, an external force is first applied to overcome the elastic force of the torsion spring, and the locking lever 9 is rotated to disengage the locking part 901 from the locking surface 801. Then, the actuating member 8 is pulled to unlock.
[0080] The advantage is that the engagement of the locking lever 9 and the locking surface 801 further enhances the stability and reliability of the lock. It prevents lock failure due to misoperation or accidental vibration by providing additional limiting action.
[0081] In some examples, the actuating member 8 has a groove 802, one end of which is connected to the locking surface 801; the locking part 901 has a locking groove 902 and also includes a locking member 10, which is slidably disposed in the groove 802; a third elastic member 11 is disposed in the groove 802, and the two ends of the third elastic member 11 act on the inner wall of the groove 802 and the locking member 10 respectively, for providing a force for the locking member 10 to extend out of the groove 802; after the locking member 10 enters the locking groove 902, it is used to limit the position of the actuating member 8 and the locking rod 9.
[0082] In some examples, the snap-fit 10 is a sphere, and the snap-fit groove 902 is a spherical recess.
[0083] For example, such as Figure 7 As shown, one end of the slide groove 802 is connected to the snap-fit surface 801. The snap-fit element 10 is a steel ball, and the third elastic element 11 is a small helical spring, installed inside the slide groove 802. The snap-fit groove 902 is a hemispherical recess located on the snap-fit part 901, and its diameter matches that of the steel ball. During installation, the steel ball is placed into the slide groove 802, the third elastic element 11 is compressed, and then the installation is complete, so that the snap-fit element 10 tends to extend out of the slide groove 802 under the action of the third elastic element 11.
[0084] Specifically, when the locking lever 9 rotates to bring the locking part 901 into contact with the locking surface 801, the locking member 10 enters the locking groove 902 under the action of the third elastic member 11, restricting the relative position of the actuating member 8 and the locking lever 9, further enhancing the locking effect. At this time, even under large external force vibration, the actuating member 8 is difficult to move, ensuring the continuous contact between the locking part 501 and the locking surface 401. When it is necessary to unlock, first apply an external force to overcome the elasticity of the third elastic member 11, causing the steel ball to exit from the locking groove 902, then rotate the locking lever 9 to release the restriction on the actuating member 8, and finally pull the actuating member 8 to unlock.
[0085] The advantages are that the locking element 10 and the third elastic element 11 further improve the reliability and stability of the locking mechanism. The engagement of the steel ball with the hemispherical groove provides a good limiting effect, preventing relative movement between the actuating element 8 and the locking rod 9 in all directions. The elasticity of the third elastic element 11 ensures that the steel ball can enter and exit the locking groove 902 in a timely and accurate manner, making the locking and unlocking operations more reliable. This multi-locking structure effectively prevents locking failure and greatly enhances the safety performance of the self-locking device.
[0086] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.
Claims
1. A tower climbing self-locking device for preventing an operator from falling when climbing a tower crane, the tower crane having a climbing rail, the climbing rail having a plurality of limiting protrusions, characterized in that, include: The main body (1) is slidably disposed on the climbing rail; Self-locking rod (2), the self-locking rod (2) is rotatably mounted on the main body (1); The self-locking rod (2) has an abutment part (201) at one end near the climbing rail and a traction part (202) at the other end. The traction part (202) is used to connect to the operator via a rope. The self-locking rod (2) is arranged such that when the operator falls, the self-locking rod (2) rotates, causing the abutment part (201) to abut against the limiting protrusion, thereby limiting the position of the main body (1) and the climbing rail.
2. A tower climbing self-locking device according to claim 1, characterized in that, Also includes: The first elastic element (3) has two ends that act on the self-locking rod (2) and the main body (1) respectively, to provide a force that moves the abutting part (201) away from the main body (1), so that the abutting part (201) abuts against the limiting protrusion.
3. A tower climbing self-locking device according to claim 2, characterized in that The main body (1) includes: The first clamp (101) has the self-locking rod (2) rotatably mounted on the first clamp (101); the first elastic member (3) has two ends acting on the first clamp (101) and the self-locking rod (2) respectively; the first clamp (101) also has a first clamping part (1011). Guide post (4), the guide post (4) is disposed on one side of the first clamp (101); The second clamp (102) is slidably disposed on the guide post (4). The second clamp (102) has a second clamping part (1021). A clamping space (103) is formed between the first clamping part (1011) and the second clamping part (1021). The clamping space (103) is arranged such that after the climbing rail enters the clamping space (103), the second clamp (102) slides close to the first clamp (101) to prevent the climbing rail from leaving the clamping space (103).
4. A tower climbing self-locking device according to claim 3, characterized in that The guide post (4) has a locking surface (401) and further includes: Locking member (5), which is slidably disposed on the second clamp (102), and having a locking part (501); When the locking member (5) is arranged to slide, the locking part (501) abuts against or releases from the locking surface (401); after the locking part (501) abuts against the locking surface (401), it is used to lock the positions of the first clamp (101) and the second clamp (102).
5. A tower climbing self-locking device according to claim 4, characterized in that Also includes: The second elastic element (6) has two ends that act on the locking element (5) and the second clamp (102) respectively, to provide a force for the locking part (501) to abut against the locking surface (401).
6. A tower climbing self-locking device according to claim 4, characterized in that The second clamp (102) has a mounting groove (1022), and the locking member (5) is slidably disposed in the mounting groove (1022).
7. A tower climbing self-locking device according to claim 6, characterized in that Also includes: A cover plate (7) is disposed on the second clamp (102) for covering the mounting groove (1022); A toggle (8) is provided at one end on the locking member (5) and at the other end through the cover plate (7) and located outside the mounting groove (1022).
8. A tower crane climbing self-locking device according to claim 7, characterized in that, The actuating element (8) has a snap-fit surface (801) at one end outside the mounting groove (1022), and also includes: A snap-fit rod (9) is rotatably mounted on the cover plate (7) and has a snap-fit part (901). The latching part (901) is arranged such that after the latching rod (9) rotates, the latching part (901) abuts against or releases from the latching surface (801); after the latching part (901) abuts against the latching surface (801), it is used to limit the position of the toggle member (8) and the cover plate (7).
9. A tower climbing self-locking device according to claim 8, characterized in that The actuating member (8) has a groove (802), one end of which is connected to the locking surface (801); the locking part (901) has a locking groove (902) and further includes: A snap-fit connector (10) is slidably disposed within the slide groove (802); The third elastic element (11) is disposed in the slide groove (802). The two ends of the third elastic element (11) act on the inner wall of the slide groove (802) and the snap-fit member (10) respectively, and are used to provide the snap-fit member (10) to extend out of the slide groove (802); The latching member (10) is arranged to enter the latching slot (902) to restrict the position of the toggle member (8) and the latching rod (9).
10. A tower climbing self-locking device according to claim 9, characterized in that The snap-fit component (10) is a sphere, and the snap-fit groove (902) is a spherical groove.