Fast-assembly maintenance-free ship lift balance chain balancing weight fixing clamp
By designing wedge blocks and fixing blocks, the problems of loose bolts and corrosion in the fixing method of the counterweight block of the ship lift balance chain are solved, and a stable connection between the counterweight block and the wire rope is achieved, which has the advantages of maintenance-free operation and efficient clamping force retention.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THREE GORGES JINSHAJIANG CHUANYUN HYDROPOWER DEV CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-05-19
AI Technical Summary
The existing method of fixing the counterweight of the balance chain of the ship lift by bolting the clamping block to the counterweight has the problem of insufficient clamping force due to loose bolts. Regular inspection and tightening are required, which consumes a lot of manpower and time. At the same time, thread failure leads to unreliable connection and increases costs.
The ship lift balance chain counterweight fixing clamp adopts quick-installation and maintenance-free design. It utilizes the structural design of wedge blocks and fixed blocks, and tightens the wedge blocks through the connecting tensioning component, so that the fixed blocks are tightened in the groove of the counterweight block, realizing a reliable connection between the counterweight block and the wire rope and avoiding bolt loosening.
It achieves a stable connection between the counterweight and the wire rope, eliminating the need for regular inspection and tightening, saving manpower and time costs, and is not prone to connection failure due to rust, possessing permanent reliability and maintenance-free operation.
Smart Images
Figure CN224259321U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ship lift balance chain counterweight fixing technology, specifically, to a quick-installation, maintenance-free ship lift balance chain counterweight fixing clamp. Background Technology
[0002] To meet the full balance requirements during the lifting operation, a balance chain is usually designed below the ship compartment and the counterweight to connect the two and balance the weight of the wire rope connecting the counterweight and the ship compartment.
[0003] A single-unit balancing chain mainly consists of multiple counterweights of appropriate weight and two steel wire ropes. The counterweights are positioned between the two steel wire ropes and are connected to both sides of the counterweights via clamping blocks on both sides, clamping the steel wire ropes between the clamping blocks and the counterweights, thus fixing the counterweights to the two steel wire ropes. The counterweights are designed with screw holes, and the clamping blocks are connected to the counterweights by multiple bolts. The connection between the clamping blocks and the counterweights is achieved by the engagement of the bolts with the screw holes on the counterweights, clamping the steel wire ropes between the clamping blocks and the counterweights, thus fixing the counterweights to the steel wire ropes. The clamping force comes from the preload of the bolts.
[0004] Ship lifts typically have more than ten sets of balancing chains, each set of balancing chains usually has hundreds of counterweights, and each counterweight usually has nearly 10 fixing bolts. Therefore, the number of counterweights and fixing bolts of a ship lift is very large.
[0005] In actual operation, the fixing bolts of the counterweight often loosen naturally, resulting in insufficient clamping force, slippage and loosening between the counterweight and the wire rope, or even falling off the wire rope. This not only affects the function of the balance chain, but also poses a significant risk of falling objects causing injury. A large amount of manpower and time is needed to regularly inspect and tighten these numerous bolts.
[0006] In addition, since the internal threads that mate with the bolts are directly machined on the counterweight, and the counterweight is usually made of carbon steel that does not have rust resistance due to cost reasons, the internal threads of the bolt holes are prone to failure due to corrosion. The bolts cannot be tightened on such counterweights with failed threads, and the counterweight and the wire rope cannot be reliably connected. Therefore, such counterweights with failed threads can only be removed and discarded, increasing costs. Utility Model Content
[0007] This utility model aims to provide a quick-installation, maintenance-free ship lift balance chain counterweight fixing clamp to solve the problems of insufficient clamping force due to bolt loosening and the high manpower and time costs of regularly inspecting and tightening a large number of bolts in the existing technology that fixes the counterweight to the wire rope by bolting the clamping block to the counterweight.
[0008] This utility model is achieved using the following technical solution:
[0009] This utility model provides a quick-installation, maintenance-free ship lift balance chain counterweight fixing clamp, including two fixing blocks respectively installed in the grooves on both sides of the counterweight, and the fixing blocks have an installation groove on the side opposite to the counterweight.
[0010] The upper and lower parts of the fixing block are respectively provided with wedge-shaped grooves. The widths of the two ends of the wedge-shaped grooves are different. The width of the first end of the wedge-shaped groove is smaller than the width of the second end. The first ends of the two wedge-shaped grooves are connected to the mounting groove.
[0011] Two wedge blocks are installed in the two wedge grooves respectively, and the two wedge blocks are connected by a connecting tensioning assembly. The connecting tensioning assembly is used to tighten the two wedge blocks and make the fixing block tensile in the groove of the counterweight block.
[0012] In use, first place the two fixing blocks in the grooves on both sides of the counterweight block, and at the same time, insert the wire rope into the mounting groove of the fixing block. Install the connecting tensioning component between the two wedge blocks, and tighten the two wedge blocks through the connecting tensioning component. At the same time, under the action of the wedge blocks, the fixing block is tightened in the groove of the counterweight block. The two wedge blocks and the fixing block work together to hold the wire rope, so that the counterweight block is reliably fixed on the wire rope. The two sides of the fixing block contact the inner wall of the groove of the counterweight block and finally tighten.
[0013] This utility model's counterweight fixing clamp enables a stable connection between the counterweight block and the steel wire rope of the balance chain in a fully balanced vertical climbing ship lift. Each counterweight block is fixed to the steel wire rope using a set of counterweight fixing clamps. Installation and fixing are simple. The two wedge blocks are tightened by the connecting tensioning component, while the fixing block is tightened in the groove of the counterweight block (i.e., achieving a tight fit between the fixing block and the counterweight block). The steel wire rope is clamped together by the two wedge blocks and the fixing block, and the clamping force can be maintained for a long time, achieving a reliable connection between the counterweight block and the steel wire rope. There is no need to regularly inspect and tighten a large number of bolts, which has the advantage of being maintenance-free and saving labor and time costs.
[0014] As a preferred technical solution:
[0015] The connection tensioning assembly includes a connector and a tensioning member. The first wedge block and the second wedge block have corresponding through holes. One end of the connector passes through the through holes on the second wedge block and the first wedge block in sequence and is connected to the tensioning member. The tensioning member is used to provide preload.
[0016] As a preferred technical solution:
[0017] The connecting component is a connecting bolt, and the tensioning component is a quick handle. One end of the connecting bolt passes through the through holes on the second wedge block and the first wedge block in sequence, and is connected to the quick handle by a thread.
[0018] As a preferred technical solution:
[0019] The tensioning element is not limited to a quick-release handle; other components or devices that can provide preload to tighten the two wedges can also be used, such as a wing nut.
[0020] As a preferred technical solution:
[0021] The connecting bolts are hexagon socket head cap screws.
[0022] As a preferred technical solution:
[0023] The mounting groove is a U-shaped groove.
[0024] As a preferred technical solution:
[0025] The wedge-shaped groove is formed on the edge of the fixing block, and the wedge-shaped groove is directly connected to the external space inside the fixing block. The inside of the fixing block is the side opposite to the counterweight.
[0026] So that when the two wedge blocks are tightened, the fixed block can expand. Under the action of the wedge blocks, the fixed block expands into the groove of the counterweight block, and the two sides of the fixed block contact the inner wall of the groove of the counterweight block and eventually expand.
[0027] As a preferred technical solution:
[0028] The two fixed blocks are connected by an elastic preload.
[0029] As a preferred technical solution:
[0030] The top surface of the fixed block is fixedly connected to an elastic pretensioner connecting component, and the two ends of the elastic pretensioner are respectively fixed to the elastic pretensioner connecting components on the two fixed blocks.
[0031] As a preferred technical solution:
[0032] The elastic preload connecting component uses a hinged bolt, and the top surface of the fixed block has a screw hole. The hinged bolt is threaded onto the fixed block.
[0033] As a preferred technical solution:
[0034] The elastic preload is a tension spring, which is attached to the end of the hinge bolt.
[0035] As a preferred technical solution:
[0036] The top surface of the fixed block is fixedly connected with a plurality of hinge bolts, which are connected by stainless steel wire.
[0037] As a preferred technical solution:
[0038] The top surface of the fixed block is fixedly connected to a clamp connecting component, which is used to connect with the clamp connecting component on the adjacent counterweight fixing clamp, and the adjacent counterweight fixing clamps are connected in series.
[0039] As a preferred technical solution:
[0040] The clamp connecting component uses a hinge bolt, which is threaded onto the fixed block.
[0041] As a preferred technical solution:
[0042] The quick handles on both sides are connected by an elastic preload.
[0043] As a preferred technical solution:
[0044] The elastic preload is a tension spring, and the two ends of the tension spring are attached to holes opened on the handle of the quick handle.
[0045] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0046] 1. The counterweight fixing clamp of this utility model can realize the stable connection between the counterweight of the balance chain of the ship chamber of the fully balanced vertical climbing ship lift and the balance chain wire rope. Each counterweight is fixed to the wire rope by a set of counterweight fixing clamps.
[0047] 2. The counterweight fixing clamp of this utility model does not affect the original fixing method of the counterweight. The installation position is different from that of the original clamping block, so there is no need to process, modify or remove the original parts.
[0048] 3. The counterweight fixing clamp of this utility model provides clamping force to a single counterweight through two quick handles, fixing the counterweight to two steel wire ropes. The quick handles can be installed quickly by hand without tools, and will not loosen on its own after installation. The clamping force can be maintained for a long time, realizing a permanent and reliable connection between the counterweight and the steel wire rope without loosening. It has the advantage of being maintenance-free, saving a lot of maintenance work. It solves the problem that the original clamping block fixing method requires regular inspection of bolt tightness, which consumes a lot of manpower and time. It is convenient, efficient, and saves time and labor costs.
[0049] 4. The counterweight fixing clamp of this utility model has a small volume. The main body is installed in the grooves on both sides of the counterweight, so it will not scratch the balance chain guide device. The weight of the counterweight fixing clamp accounts for a relatively small proportion of the overall weight of the balance chain. Therefore, it has little impact on the operation of the balance chain after installation.
[0050] 5. The counterweight fixing clamp of this utility model can be connected in series with adjacent counterweight fixing clamps to prevent the counterweight from falling when a single counterweight fixing clamp fails. Connecting multiple counterweight fixing clamps in series can increase the reliability of fixing the counterweight to the wire rope. Attached Figure Description
[0051] Figure 1 This is a three-dimensional structural diagram of the quick-installation, maintenance-free ship lift balance chain counterweight fixing clamp described in this utility model.
[0052] Figure 2 This is a schematic diagram of the structure of the fixing block described in this utility model.
[0053] Figure 3 for Figure 2 Top view.
[0054] Figure 4 This is a schematic diagram of the structure of the wedge block of this utility model.
[0055] Figure 5 for Figure 4 The front view.
[0056] Figure 6 This is a schematic diagram of the structure of the wedge block II described in this utility model.
[0057] Figure 7 for Figure 6 The front view.
[0058] Figure 8 This is a schematic diagram of the installation of the quick-installation, maintenance-free ship lift balance chain counterweight fixing clamp described in this utility model. Figure 1 .
[0059] Figure 9 This is a schematic diagram of the installation of the quick-installation, maintenance-free ship lift balance chain counterweight fixing clamp described in this utility model. Figure 2 .
[0060] Icons: 1-Fixing block, 101-Mounting groove, 102-Wedge groove, 2-Wedge block one, 3-Wedge block two, 4-Quick handle, 5-Stainless steel wire, 6-Hinged bolt, 7-Tension spring, 8-Hex socket head cap screw, 9-Clamping block, 10-Counterweight block, 11-Wire rope, 12-Arc-shaped notch, 13-Through hole. Detailed Implementation
[0061] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0062] Example 1
[0063] like Figures 1-9 As shown in the figure, this embodiment proposes a quick-installation, maintenance-free ship lift balance chain counterweight fixing fixture, which includes two fixing blocks 1. The two fixing blocks 1 are symmetrically arranged on both sides of the counterweight block 10, and the two fixing blocks 1 are respectively installed in the grooves on both sides of the counterweight block 10.
[0064] The fixing block 1 has a mounting groove 101 on the side opposite to the counterweight block 10. When the counterweight block 10 is fixed to the wire rope 11, the wire rope 11 is located in the mounting groove 101. In this embodiment, the mounting groove 101 is a U-shaped groove.
[0065] The upper and lower parts of the fixing block 1 are respectively provided with a wedge-shaped groove 102. The two ends of the wedge-shaped groove 102 have different widths. The narrower end of the wedge-shaped groove 102 is connected to the mounting groove 101. Figure 2 As shown.
[0066] In this embodiment, the wedge-shaped groove 102 refers to a groove whose cross-section is wedge-shaped, meaning that the two sides of the groove are not parallel, so that the width of the groove gradually narrows from one end to the other.
[0067] A wedge block is installed in each of the two wedge grooves 102, namely wedge block 1 2 and wedge block 2 3. Wedge block 1 2 is embedded in the wedge groove 102 at the upper part of the fixing block 1, and wedge block 2 3 is embedded in the wedge groove 102 at the lower part of the fixing block 1. The wedge blocks are adapted to the corresponding wedge grooves 102.
[0068] The wedge block 2 and the wedge block 3 are provided with through holes 13, and the through holes 13 on the two are aligned. The wedge block 2 and the wedge block 3 are connected by a connecting tensioning assembly. The connecting tensioning assembly is used to tighten the two wedge blocks and make the fixing block 1 tighten in the groove of the counterweight block 10.
[0069] Preferably, the wedge groove 102 is formed on the edge of the fixing block 1, and the wedge groove 102 is directly connected to the external space inside the fixing block 1. The inside of the fixing block 1 refers to the side opposite to the counterweight block 10, so that the fixing block 1 can expand when the two wedge blocks are tightened.
[0070] Preferably, the connection tensioning assembly includes a hexagon socket head cap screw 8 and a quick-release handle 4. One end of the hexagon socket head cap screw 8 passes sequentially through the through holes 13 on the second wedge block 3 and the first wedge block 2, and is threadedly connected to the quick-release handle 4. The quick-release handle 4 has an internal threaded hole, into which one end of the hexagon socket head cap screw 8 extends and connects. The external thread on the hexagon socket head cap screw 8 engages with the internal thread of the internal threaded hole to achieve a threaded connection. After the quick-release handle 4 and the hexagon socket head cap screw 8 are threadedly connected, pressing the handle of the quick-release handle 4 causes the cam eccentric structure of the quick-release handle 4 to provide preload force to the hexagon socket head cap screw 8, tightening the connection between the first wedge block 2 and the second wedge block 3. The first wedge block 2 and the second wedge block 3 move towards the center of the fixed block 1, and the fixed block 1 expands to both sides under the action of the wedge blocks, achieving a tensioned connection with the counterweight block 10 and a tight fit with the counterweight block 10. This invention converts the preload into clamping force using wedge blocks. The wedge block 2, wedge block 3, and fixing block 1 together clamp the wire rope 11, reliably fixing the counterweight 10 to the wire rope 11. The quick-release handle 4 will not loosen on its own after being pressed, and the clamping force will not decrease and can be maintained for a long time, preventing the counterweight fixing clamp from loosening. Regular inspection and tightening are unnecessary, achieving maintenance-free operation and saving significant maintenance work.
[0071] The quick handle 4 is existing technology, and its structure will not be described in detail here. For example, a cam handle of model LWAF-63-M6 can be used.
[0072] The above are preferred connection methods for the wedge block 2 and the wedge block 3, but they are not limited to the above connection methods. Other connection structures that can tighten the wedge block 2 and the wedge block 3 are also possible.
[0073] Preferably, both the first wedge block 2 and the second wedge block 3 have arc-shaped notches 12, such as... Figure 5 and Figure 7 As shown, the arc-shaped notch 12 is adapted to fit the outer surface of the wire rope 11, so that the wire rope 11 can be clamped together by the three components of the wedge block 1, the wedge block 2, and the fixing block 1.
[0074] The installation and use method of the counterweight fixing clamp of this utility model is as follows:
[0075] First, place the two fixing blocks 1 into the grooves on both sides of the counterweight 10, and simultaneously insert the wire rope 11 into the U-shaped groove of the fixing block 1. At this point, the two fixing blocks 1 do not interfere with the original clamping block 9 of the counterweight 10, and do not affect the installation and removal of the original clamping block 9. Then, embed a set of wedge blocks 1 2 and wedge blocks 2 3 into the two fixing blocks 1 respectively. Wedge blocks 1 2 and wedge blocks 2 3 are embedded into the wedge grooves 102 at the upper and lower parts of the fixing blocks 1 respectively. Next, pass one end of the hexagon socket bolt 8 through the through hole 13 on the wedge block 2 3, then through the gap between the counterweight 10 and the wire rope 11, and out through the through hole 13 on the wedge block 1 2. Then connect and fix it in the internal thread hole of the quick handle 4. After the quick handle 4 and the hexagon socket bolt 8 are finally connected and fixed, the handle of the quick handle 4 should be in the open and released state and the handle should be facing the center of the counterweight 10. Pressing the handle of the quick-release handle 4 into place pulls wedge block 2 and wedge block 3 towards the center of the fixed block 1. During this process, the eccentric cam structure of the quick-release handle 4 provides preload to the internal hex bolt 8, causing wedge block 2 and wedge block 3 to move towards the steel wire rope 11 in the middle. The three components of wedge block 2, wedge block 3 and fixed block 1 together clamp the steel wire rope 11, so that the clamp reliably clamps the steel wire rope 11. While the wedge block 2 and wedge block 3 move towards the steel wire rope 11, they squeeze the fixed block 1, causing the fixed block 1 to expand to both sides. When it expands, the two sides of the fixed block 1 contact the inner wall of the groove of the counterweight block 10 and finally tighten, so that the counterweight block 10 is fixed to the steel wire rope 11 by the counterweight block fixing clamp of this utility model.
[0076] Preferably, all components of the counterweight fixing clamp of this utility model are made of aluminum alloy or stainless steel, which has excellent rust resistance, corrosion resistance, and is not prone to connection failure due to rust. It can solve the problem of loss of clamping force caused by rust failure of the internal thread of the counterweight 10 used in the original clamping method.
[0077] The counterweight fixing clamp of this utility model can realize the stable connection between the counterweight 10 of the balance chain of the fully balanced vertical climbing ship lift and the balance chain wire rope 11. Each counterweight 10 is fixed to the wire rope 11 by a set of counterweight fixing clamps.
[0078] like Figure 8 and Figure 9 As shown, the counterweight fixing clamp of this utility model does not affect the original fixing method of the counterweight 10. The installation position is different from that of the original clamping block 9, and there is no need to process, modify or remove the original parts.
[0079] The counterweight fixing clamp of this utility model provides clamping force to a single counterweight 10 through two quick handles 4, fixing the counterweight 10 to two steel wire ropes 11. The quick handles 4 can be installed quickly by hand without tools, and will not loosen on its own after installation. The clamping force can be maintained for a long time, realizing a permanent and reliable connection between the counterweight 10 and the steel wire ropes 11 without loosening. It has the advantage of being maintenance-free, solving the problem that the original clamping block 9 fixing method requires regular inspection of bolt tightness, which consumes a lot of manpower and time. It is convenient, efficient, and saves time and labor costs.
[0080] The counterweight fixing clamp of this utility model has a small volume. The main body is installed in the grooves on both sides of the counterweight 10, so it will not scratch the balance chain guide device. The weight of the counterweight fixing clamp accounts for a relatively small proportion of the overall weight of the balance chain. Therefore, it has little impact on the operation of the balance chain after installation.
[0081] Example 2
[0082] The difference between this embodiment and Embodiment 1 is that:
[0083] like Figure 1 , Figure 8 and Figure 9 As shown, each of the fixed blocks 1 is fixedly connected to a hinge bolt 6 on its top surface. The fixed block 1 has a screw hole, and the hinge bolt 6 is screwed into the screw hole. The hinge bolt 6 is connected to the fixed block 1 by a thread.
[0084] The two fixing blocks 1 are connected by a tension spring 7, with both ends of the tension spring 7 hooked onto the ends of the hinge bolts 6 on the two fixing blocks 1. The spring force of the tension spring 7 pulls the two fixing blocks 1 towards the middle of the counterweight 10, ensuring that the fixing blocks 1 will not detach from the sides of the counterweight 10 even when the tension between them disappears. This ensures that the counterweight 10 is effectively supported by the fixing blocks 1 and will not fall, increasing the reliability of the counterweight 10 being supported by the clamp.
[0085] The connection of the two fixed blocks 1 is not limited to the connection of the hinge bolt 6 and the tension spring 7; other components or devices that can connect the two fixed blocks 1 may also be used.
[0086] Example 3
[0087] The difference between this embodiment and Embodiment 2 is as follows:
[0088] like Figure 1 , Figure 8 and Figure 9As shown, the top surface of each fixed block 1 can be connected to multiple hinge bolts 6. The multiple hinge bolts 6 are connected by stainless steel wires 5, which can prevent the hinge bolts 6 from loosening and also prevent a single hinge bolt 6 from falling off the fixed block 1 after it comes loose.
[0089] Example 4
[0090] The difference between this embodiment and embodiment 3 is as follows:
[0091] Four hinge bolts 6 are fixedly connected to the top surface of each of the fixed blocks 1. The four hinge bolts 6 are arranged in a dot matrix. A tension spring 7 is connected between two hinge bolts 6 near their inner sides on two of the fixed blocks 1, respectively. Figure 1 As shown, the two fixed blocks 1 are connected by two tension springs 7 to ensure that the fixed blocks 1 on both sides of the counterweight 10 will not detach outward.
[0092] The two hinge bolts 6 on the outer side of the fixed block 1 are respectively used to connect with the hinge bolts 6 on the adjacent counterweight fixing clamps. The connection method includes, but is not limited to, connecting through a connecting rod, so that multiple counterweight fixing clamps are connected in series. After multiple counterweight fixing clamps are connected in series, if the counterweight fixing clamp corresponding to a certain counterweight 10 fails unexpectedly and the clamping force is insufficient, the counterweight 10 can still be fixed to the wire rope 11 by the counterweight fixing clamps corresponding to the adjacent counterweight 10.
[0093] The two hinge bolts 6 on the outer side of the fixed block 1 can be used as connection and mounting points to another set of adjacent counterweight fixing clamps. They can be used to connect adjacent counterweight fixing clamps to prevent the counterweight 10 from falling when a single counterweight fixing clamp fails. Connecting multiple counterweight fixing clamps together can increase the reliability of fixing the counterweight 10 to the wire rope 11.
[0094] When the two hinge bolts 6 on the outer side of the fixed block 1 are connected to the hinge bolts 6 of the adjacent counterweight fixing clamp, the stainless steel wire 5 can be exempted from installation.
[0095] To increase the reliability of the counterweight fixing clamp, this utility model has four hinge bolts 6 installed on the top of each of the two fixing blocks 1. Two tension springs 7 are installed between the two sets of hinge bolts 6 near the inner side of the fixing block 1. The spring force of the tension springs 7 pulls the two fixing blocks 1 towards the middle of the counterweight 10, so that the fixing blocks 1 will not detach from the sides of the counterweight 10 even when the tension between them disappears, ensuring that the counterweight 10 can be effectively supported by the fixing blocks 1 and will not fall off.
[0096] Two sets of hinge bolts near the outside of the fixed block 1 can be used to connect two adjacent counterweight fixing clamps. After multiple clamps are connected in series, even if a single clamp fails and cannot hold the wire rope 11, the load of the counterweight 10 can be transferred to the adjacent clamp, ensuring that the counterweight 10 will not fall off.
[0097] Example 5
[0098] The difference between this embodiment and embodiment 4 is that:
[0099] The four hinge bolts 6 can be machined into a single component with the fixed block 1 to prevent the hinge bolts 6 from coming loose from the fixed block 1. At this point, the stainless steel wire 5 can be removed from the installation.
[0100] Example 6
[0101] The difference between this embodiment and embodiment 4 is that:
[0102] Holes can be drilled in the handle of the quick handle 4, and tension springs 7 can be connected between the two quick handles 4, so that the two ends of tension springs 7 are attached to the holes drilled in the handle of the quick handle 4. Alternatively, the tension springs 7 between the two hinge bolts 6 can be changed to be attached to the holes drilled in the handle of the quick handle 4. Under the spring force of tension springs 7, the handle is less likely to be opened accidentally.
[0103] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A quick-installation, maintenance-free ship lift balance chain counterweight fixing clamp, characterized in that: It includes two fixing blocks that are respectively installed in the grooves on both sides of the counterweight, and the fixing blocks have a mounting groove on the side opposite to the counterweight. The upper and lower parts of the fixing block are respectively provided with wedge-shaped grooves. The widths of the two ends of the wedge-shaped grooves are different. The width of the first end of the wedge-shaped groove is smaller than the width of the second end. The first ends of the two wedge-shaped grooves are connected to the mounting groove. Two wedge blocks are installed in the two wedge grooves respectively, and the two wedge blocks are connected by a connecting tensioning assembly. The connecting tensioning assembly is used to tighten the two wedge blocks and make the fixing block tensile in the groove of the counterweight block.
2. The quick-installation, maintenance-free ship lift counterweight fixing clamp according to claim 1, characterized in that: The connection tensioning assembly includes a connector and a tensioning member. The first wedge block and the second wedge block have corresponding through holes. One end of the connector passes through the through holes on the second wedge block and the first wedge block in sequence and is connected to the tensioning member. The tensioning member is used to provide preload.
3. The quick-installation, maintenance-free ship lift balance chain counterweight fixing clamp according to claim 2, characterized in that: The connecting component is a connecting bolt, and the tensioning component is a quick handle. One end of the connecting bolt passes through the through holes on the second wedge block and the first wedge block in sequence, and is connected to the quick handle by a thread.
4. The quick-installation, maintenance-free ship lift counterweight fixing clamp according to claim 1, characterized in that: The wedge-shaped groove is formed on the edge of the fixing block, and the wedge-shaped groove is directly connected to the external space inside the fixing block. The inside of the fixing block is the side opposite to the counterweight. So that when the two wedge blocks are tightened, the fixing block can expand.
5. The quick-installation, maintenance-free ship lift counterweight fixing clamp according to claim 1, characterized in that: The two fixed blocks are connected by an elastic preload.
6. The quick-installation, maintenance-free ship lift counterweight fixing clamp according to claim 5, characterized in that: The top surface of the fixed block is fixedly connected to an elastic pretensioner connecting component, and the two ends of the elastic pretensioner are respectively fixed to the elastic pretensioner connecting components on the two fixed blocks.
7. The quick-installation, maintenance-free ship lift counterweight fixing clamp according to claim 6, characterized in that: The elastic preload connecting component uses a hinged bolt, and the top surface of the fixed block has a screw hole. The hinged bolt is threaded onto the fixed block.
8. The quick-installation, maintenance-free ship lift counterweight fixing clamp according to claim 7, characterized in that: The elastic preload is a tension spring, which is attached to the end of the hinge bolt.
9. The quick-installation, maintenance-free ship lift counterweight fixing clamp according to claim 1, characterized in that: The top surface of the fixed block is fixedly connected to a clamp connecting component, which is used to connect with the clamp connecting component on the adjacent counterweight fixing clamp, and the adjacent counterweight fixing clamps are connected in series.
10. The quick-installation, maintenance-free ship lift counterweight fixing clamp according to claim 3, characterized in that: The quick handles on both sides are connected by an elastic preload.