Rail anti-deviation bidirectional locking clamp
By using a bidirectional locking clamp design to prevent guide rail deviation, the longitudinal and transverse bidirectional clamping of the guide rail is achieved through the locking clamp and screw hinge mechanism, which solves the problem of guide rail deviation and improves the stability and accuracy of construction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUHUANG ECOLOGICAL TECHNOLOGY CO LTD
- Filing Date
- 2025-10-16
- Publication Date
- 2026-07-21
AI Technical Summary
In existing pipe jacking construction, the guide rail is easily affected by uneven reaction force, vibration and soil disturbance, which can lead to lateral deviation or settlement. Existing prevention and control measures have limited effectiveness and cannot guarantee the long-term stability and construction accuracy of the guide rail system.
Design a guide rail anti-deviation bidirectional locking clamp. By setting locking clamps at both ends of the guide rail, a screw hinge mechanism is used to achieve bidirectional clamping in both the longitudinal and transverse directions. Combined with a compression spring and a clamping rod return spring, a multi-structure cooperative locking is provided to restrict multiple degrees of freedom displacement of the guide rail.
It effectively prevents lateral deviation, longitudinal movement and torsional deformation of the guide rail, improves the installation accuracy and stability of the guide rail, and ensures the axial accuracy and project quality of pipe jacking construction.
Smart Images
Figure CN224533167U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of locking clamp technology, and in particular to a bidirectional locking clamp for preventing guide rail deviation. Background Technology
[0002] In municipal stormwater and sewage pipe network construction, pipe jacking technology is widely used due to its minimal impact on ground traffic and the environment. This technology typically requires the initial construction of a caisson as both the working and receiving shafts. The main jacking system installed within the caisson then generates jacking force to push the pipe section by section into the soil along a predetermined axis. In this system, the installation and fixing of the guide rails to the caisson base is particularly critical, as their accuracy directly affects the accuracy of the pipe jacking axis and the overall construction quality of the project.
[0003] Currently, conventional pipe jacking construction often uses heavy-duty steel rails to fabricate guide rails, which are then fixed to pre-embedded steel channels at the bottom of the shaft through welding and other methods. However, during actual construction, especially in complex geological conditions or during long-term jacking operations, the guide rails are susceptible to uneven reaction forces, vibrations, and soil disturbances, leading to lateral shifts or settlement. Existing preventative measures mostly focus on post-construction reinforcement and correction, such as using welded anchors, padding with hardwood or steel sections, or even reinforcing the bottom slab of the working shaft. These methods not only increase the complexity of construction and downtime, but their effectiveness also depends on the experience of on-site personnel, with limited adjustment accuracy and efficiency, making it difficult to fundamentally guarantee the long-term stable guiding accuracy of the guide rail system.
[0004] Therefore, there is an urgent need for a guide rail fixing device that can effectively prevent displacement, achieve rapid and accurate installation and secure locking, so as to improve the automation and reliability of pipe jacking construction and ensure the axial accuracy of pipeline laying and the overall quality of the project. Utility Model Content
[0005] In order to overcome the shortcomings mentioned in the background art, this utility model provides a guide rail anti-deviation bidirectional locking clamp.
[0006] The technical solution is as follows: a guide rail anti-deviation bidirectional locking clamp, including a guide rod, locking block, pressure plate, screw, knob, lifting plate, hinge rod and pressure spring. Both the crossbeam and the guide rail are I-shaped structures. Several crossbeams are arranged at a preset interval along the transverse direction. The guide rail to be fixed is arranged longitudinally on the top of the crossbeam and is fixed by locking clamps set at its left and right ends. Each set of locking clamps includes two symmetrically distributed guide rods. Locking blocks are slidably connected between the front and rear sides of the two guide rods. Pressure springs are sleeved on the front and rear ends of the guide rods. The front and rear ends of the pressure springs are respectively connected to the end face of the corresponding locking block and the end of the guide rod. The pressure plate is located above the two locking blocks. The top of the pressure plate is rotatably connected to a screw. The top of the screw is fixedly connected to a knob. The outer side of the screw is threadedly connected to a lifting plate. The front and rear ends of the lifting plate are hinged to the corresponding locking block through a hinge rod.
[0007] As a further preferred option, tension springs are also included, with tension springs connected between the front and rear sides of the bottom of the lifting plate and the front and rear sides of the top of the pressing plate.
[0008] As a further preferred option, the inner end of the locking block is provided with a slot, the size of which is adapted to the upper part of the I-beam structure.
[0009] As a further preferred option, the bottom of the lifting plate is provided with a notch that matches the upper surface of the I-beam structure guide rail.
[0010] As a further preferred option, the locking block is forged from high-strength alloy steel, and its inner slot working surface is surface hardened.
[0011] As a further preferred embodiment, it also includes a locking rod and a return spring. The top surface of the guide rod is provided with multiple locking holes spaced apart. The inner bottom of the locking block is provided with sliding grooves on both the left and right sides. The locking rod is slidably connected in the sliding groove. A return spring is connected between the locking rod and the inside of the sliding groove. In the initial state, the locking rod is locked into the corresponding locking hole.
[0012] The present invention has the following advantages: 1. The present invention achieves longitudinal fixation by setting locking clamps at both ends of the guide rail, and uses a screw hinge mechanism inside each clamp to drive the front and rear locking blocks to move in opposite directions, thereby clamping the guide rail web in both directions. This design forms a spatial constraint in both longitudinal and transverse directions, which can effectively limit the displacement of multiple degrees of freedom of the guide rail, comprehensively prevent lateral offset, longitudinal movement and torsional deformation, and significantly improve stability.
[0013] 2. The inner groove of the locking block is adapted to the I-beam structure of the crossbeam to limit its left and right offset; the bottom notch of the lifting plate is adapted to the upper surface of the guide rail to limit the front and back displacement of the guide rail. The combination of the two ensures that the crossbeam and the guide rail are accurately positioned during installation, providing an accurate foundation for subsequent locking.
[0014] 3. The clamping spring assists the locking block in engaging with the guide rail, providing elastic force; the screw thread has self-locking properties, stabilizing the height of the lifting plate; the locking rod, locking hole, and return spring work together to reinforce the position of the locking block after it stops, and the multi-structure cooperation ensures the stability of the device after locking and prevents the guide rail from shifting. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0016] Figure 2 This is a three-dimensional structural diagram of the locking block, pressing plate, and screw of this utility model.
[0017] Figure 3 This is a three-dimensional structural diagram of the lifting plate, hinge rod, and tension spring components of this utility model.
[0018] Figure 4 for Figure 3 Enlarged view of point A in the image.
[0019] Wherein: 1-crossbeam, 2-guide rail, 3-guide rod, 4-locking block, 41-slot, 5-pressure plate, 6-screw, 7-knob, 8-lifting plate, 9-hinged rod, 10-tension spring, 11-pressure spring, 12-clamping rod, 13-reset spring, 14-clamping hole. Detailed Implementation
[0020] Example: A bidirectional locking clamp for preventing guide rail misalignment, such as... Figures 1-3As shown, the system includes guide rods 3, locking blocks 4, pressure plates 5, screws 6, knobs 7, lifting plates 8, hinge rods 9, tension springs 10, and compression springs 11. Both the crossbeams 1 and guide rails 2 are I-beam structures. Several crossbeams 1 are arranged laterally at preset intervals and installed on steel channels. The guide rails 2 to be fixed are arranged longitudinally on the top of the crossbeams 1 and fixed by locking clamps at their left and right ends. Each set of locking clamps includes two symmetrically distributed guide rods 3. Locking blocks 4 are slidably connected between the front and rear sides of the two guide rods 3. Compression springs 11 are fitted on the front and rear ends of the guide rods 3. The front and rear ends of the compression springs 11 are connected to the end faces of the corresponding locking blocks 4 and the ends of the guide rods 3, respectively. A groove 41 is opened on the inner end of the locking block 4. The size of the groove 41 corresponds to the upper half of the I-beam crossbeam 1. To achieve the guiding and limiting function, the locking block 4 is forged from high-strength alloy steel. The working surface of its inner groove 41 is surface hardened, enabling it to withstand long-term, repeated clamping cycles and huge lateral extrusion forces, effectively avoiding the decrease in clamping force due to wear or deformation, and extending the service life of the device. The pressure plate 5, as another part of the locking clamp, is located above the two locking blocks 4. The top of the pressure plate 5 is rotatably connected to the screw 6, and the top of the screw 6 is welded with a knob 7. The outer side of the screw 6 is threadedly connected to the lifting plate 8. The front and rear ends of the lifting plate 8 are hinged to the corresponding locking blocks 4 through the hinge rod 9. The front and rear sides of the bottom of the lifting plate 8 are connected to the front and rear sides of the top of the pressure plate 5, and tension springs 10 are connected to the front and rear sides of the top of the lifting plate 8. The bottom end of the lifting plate 8 is provided with a notch, which is adapted to the upper end face of the I-beam structure guide rail 2.
[0021] like Figures 3-4 As shown, it also includes a locking rod 12 and a return spring 13. The top surface of the guide rod 3 is provided with multiple locking holes 14 at intervals along the moving path of the locking block 4. The bottom left and right sides of the inner bottom of the locking block 4 are provided with sliding grooves. The locking rod 12 is slidably connected in the sliding groove. The return spring 13 is connected between the locking rod 12 and the inside of the sliding groove. In the initial state, the locking rod 12 is locked into the corresponding locking hole 14 under the action of the return spring 13, so as to stabilize the position of the locking block 4 on the guide rod 3.
[0022] When installing the guide rail 2, first install several crossbeams 1 in a horizontally spaced manner on the channel steel. Install locking clamps on the left and right sides according to the length of the guide rail 2. The number of locking clamps can also be increased. First, align the two locking blocks 4 in the locking clamps with the front end of the crossbeam 1, and then fit the locking clamps onto the upper end of the crossbeam 1 in the front-back direction. During this process, the groove 41 inside the locking block 4 aligns with and engages with the upper end of the I-beam crossbeam 1. The structure of the groove 41 restricts the left and right displacement of the locking block 4 until the locking clamp is engaged in the preset installation position of the guide rail 2. Ensure that all locking clamps on the same horizontal line are engaged. The clamps are precisely aligned in the left-right direction. In the unlocked state, the two locking blocks 4 are in a position far apart from each other, the compression spring 11 is in a compressed state, and the locking rod 12 serves to fix the position of the locking blocks 4, preventing wobbling due to the rotatable design of the hinge rod 9. The lifting plate 8 is in a low position based on the screw 6. Then, the guide rail 2 is pushed longitudinally from left to right along the top surface of the crossbeam 1, ensuring that the guide rail 2 is located between the two locking blocks 4. During this process, the bottom surface of the guide rail 2 contacts the top surface of the crossbeam 1, while the top surface of the guide rail 2 precisely matches and pushes into the notch at the bottom of the pressure plate 5. The notch can limit the forward and backward displacement of the guide rail 2. 2. After the device is in place, turn knob 7 to rotate screw 6. Screw 6 drives pressure plate 5 to move upward, and tension spring 10 is stretched to provide stability during the movement. When pressure plate 5 moves upward, it drives hinge rod 9 to rotate. Through hinge rod 9, the locking blocks 4 on the front and rear sides move closer to each other along guide rod 3. Pressure spring 11 releases its elastic potential energy. The elastic force of pressure spring 11 ensures that guide rod 3 is always in the center position of the two locking blocks 4. When locking blocks 4 move, they drive latch 12 to move synchronously. At this time, latch 12 is pushed by the inner wall of latch hole 14 and retracts upward along the slide groove. When the return spring 13 is compressed, the two locking blocks 4 move closer together and are inserted into the I-shaped groove of the I-shaped guide rail 2, thereby achieving a firm lock on the guide rail 2. After locking, stop rotating the knob 7. The screw 6 maintains the height of the lifting plate 8 by means of its self-locking performance. After the locking blocks 4 stop moving, the locking rod 12 is re-engaged into the corresponding locking hole 14 under the action of the return spring 13, further reinforcing the position of the locking blocks 4. Continue to install the remaining guide rails 2 in this way. When disassembling the guide rail 2, reverse the above operation. First, reverse the knob 7 to make the locking blocks 4 move away from each other, then remove the guide rail 2, and finally remove the locking clamp.
Claims
1. A bidirectional locking clamp for preventing guide rail deviation, characterized in that: The system includes guide rods (3), locking blocks (4), pressure plates (5), screws (6), knobs (7), lifting plates (8), hinge rods (9), and pressure springs (11). Both the crossbeams (1) and the guide rails (2) are I-shaped structures. Several crossbeams (1) are arranged at preset intervals in the transverse direction. The guide rails (2) to be fixed are arranged in the longitudinal direction on the top of the crossbeams (1) and are fixed by locking clamps set at their left and right ends. Each set of locking clamps includes two symmetrically distributed guide rods (3). The front and rear sides of the two guide rods (3) are slidably connected by locking clamps. Block (4), and the front and rear ends of the guide rod (3) are fitted with compression springs (11). The front and rear ends of the compression springs (11) are connected to the end face of the corresponding locking block (4) and the end of the guide rod (3), respectively. The compression plate (5) is located above the two locking blocks (4). The top of the compression plate (5) is rotatably connected to a screw (6). The top of the screw (6) is fixedly connected to a knob (7). The outside of the screw (6) is threadedly connected to a lifting plate (8). The front and rear ends of the lifting plate (8) are hinged to the corresponding locking block (4) through a hinge rod (9).
2. The guide rail anti-deviation bidirectional locking clamp as described in claim 1, characterized in that: It also includes tension springs (10), and tension springs (10) are connected between the front and rear sides of the bottom of the lifting plate (8) and the front and rear sides of the top of the pressing plate (5).
3. The guide rail anti-deviation bidirectional locking clamp as described in claim 2, characterized in that: The inner end of the locking block (4) is provided with a slot (41), the size of which is adapted to the upper half of the I-beam (1).
4. The guide rail anti-deviation bidirectional locking clamp as described in claim 3, characterized in that: The bottom end of the lifting plate (8) is provided with a notch, which is adapted to the upper end face of the I-beam structure guide rail (2).
5. The guide rail anti-deviation bidirectional locking clamp as described in claim 4, characterized in that: The locking block (4) is forged from high-strength alloy steel, and the working surface of the inner groove (41) is surface hardened.
6. The guide rail anti-deviation bidirectional locking clamp as described in claim 5, characterized in that: It also includes a locking rod (12) and a return spring (13). The top surface of the guide rod (3) is provided with multiple locking holes (14) at intervals. The inner bottom of the locking block (4) is provided with sliding grooves on both the left and right sides. The locking rod (12) is slidably connected in the sliding groove. The locking rod (12) is connected to the inside of the sliding groove with a return spring (13). In the initial state, the locking rod (12) is locked into the corresponding locking hole (14).