A spool clamping frame

Abstract

The scheme discloses a spool clamping frame in the field of steel wire rope production equipment, and contains a frame body and a spool clamping mechanism. The clamping mechanism has a power mechanism, mirror image gear transmission mechanisms arranged on both sides of the frame body and a clamping mechanism. The power mechanism simultaneously drives the gear transmission mechanisms on both sides. The clamping mechanism is guided and constrained in linkage with the gear transmission mechanisms through screw cooperation. When the power mechanism drives the gear transmission mechanisms to rotate forward or reversely, the clamping mechanism moves towards or away from the central shaft of the frame body. The scheme constructs a cooperative system of "power mechanism + double-sided gear transmission mechanism + clamping mechanism", replaces the traditional manual pulling and clamping chuck mode, simplifies the operation by mechanical transmission, improves the clamping convenience, ensures the clamping symmetry by double-sided synchronous driving, enhances the spool clamping stability, and lays a foundation for the splicing and unwinding synchronization.

Description

Technical Field

[0001] This utility model belongs to the field of wire rope production equipment, and specifically relates to an I-beam wheel clamping frame. Background Technology

[0002] In the production process of steel wire rope, multiple strands of steel wire need to be combined into a rope. In order to ensure the quality of the combined rope and the compactness of each wire in the combined rope, the wires should be laid out synchronously. Most existing wire laying wheels adopt a frame structure, that is, the wire laying wheel is rotated and installed inside the frame, and the wires pull the wire laying wheel to rotate, thereby realizing the wire laying.

[0003] A frame-type rope-making machine, as disclosed in CN211110382U, includes a frame (similar to a small boat) with I-beam wheel clamping mechanisms rotatably mounted on both sides. Each clamping mechanism includes a clamping plate; the left clamping plate is rotatably mounted to the frame, while the right clamping plate has a sleeve that slides along its axis. The sleeve is rotatably mounted to the frame, and a spring that extends and retracts along its axis is provided between the sleeve and the clamping plate. The relative movement between the clamping plate and the sleeve's axis facilitates the clamping of the pay-off reels. During operation, the springs clamp the pay-off reels on both sides, causing them to rotate. When replacing the pay-off reels, the clamping plates are pulled outwards to increase the distance between them. After removing the empty pay-off reel and replacing it with a new one, the clamping plates are released. Under the action of the springs, the clamping plates return to their original position, clamping the pay-off reel and causing it to rotate synchronously.

[0004] CN211110382U discloses a frame-type rope-binding vehicle with a simple structure and strong practicality. However, it also has shortcomings in terms of ease of use and safety that urgently need to be addressed. The I-beam wheel clamping mechanism in this solution is used to clamp the I-beam wheel. When in use, the I-beam wheel is removed and clamped by pulling and loosening the clamping plate, which is relatively laborious and poses a risk of accidental injury to personnel. Utility Model Content

[0005] The present invention aims to provide an I-beam wheel clamping frame to solve the problems of low ease of use and low safety of the I-beam wheel mounting mechanism in the existing frame-type rope-binding vehicle.

[0006] This solution provides an I-beam wheel clamping frame, which includes a frame and an I-beam wheel clamping mechanism. The I-beam wheel clamping mechanism includes a power mechanism, a gear transmission mechanism mirror-arranged on both sides of the frame, and a clamping mechanism. The power mechanism is used to simultaneously drive the gear transmission mechanisms on both sides. The clamping mechanism and the gear transmission mechanism are linked by a helical engagement and guiding constraint. When the power mechanism drives the gear transmission mechanism to rotate forward / reverse, the clamping mechanism moves towards / away from the central axis of the frame.

[0007] The working principle of this scheme is as follows: The I-beam wheel clamping mechanism consists of a power mechanism, a double-sided mirrored gear transmission mechanism, and a clamping mechanism. These components are mechanically connected to form a transmission chain. The power transmission logic is that the power mechanism outputs power to synchronously drive the gear transmission mechanisms on both sides of the frame. Due to the double-sided mirroring, symmetrical movements on both sides are ensured. The clamping mechanism and the gear transmission mechanism are linked by a helical engagement and guiding constraints. Motion conversion occurs when the gear transmission mechanism rotates; the helical engagement (such as a screw-nut pair) converts the rotational motion of the gears into the linear motion of the clamping mechanism. The guiding constraints (such as a guide rail-slide groove) restrict the rotation of the clamping mechanism, retaining only the degree of freedom of movement along the central axis of the frame.

[0008] The clamping action is achieved as follows: when the power mechanism drives the gear transmission mechanism to rotate in the forward direction, the screw engagement causes the clamping mechanism to move closer to the central axis of the frame, thus clamping the I-beam wheel; when the power mechanism drives the gear transmission mechanism to rotate in the reverse direction, the clamping mechanism moves away from the central axis of the frame, thus releasing the I-beam wheel.

[0009] The beneficial technical effects of this solution are as follows: This solution constructs a collaborative system of "power mechanism + double-sided gear transmission mechanism + clamping mechanism", which replaces the traditional "manual pull-out chuck loading" method. It simplifies operation and improves clamping convenience through mechanical transmission; the double-sided synchronous drive ensures clamping symmetry and enhances the clamping stability of the I-beam wheel, laying the foundation for the subsequent synchronous rope laying.

[0010] Furthermore, the gear transmission mechanism includes a driving gear and a driven gear that mesh with each other, and both the rotating gear and the driven gear are rotatably connected to the outer wall of the frame.

[0011] The driving gear and driven gear mesh, both rotatably connected to the outer wall of the frame, forming a basic transmission chain. The driving gear receives torque from the power mechanism and transmits power to the driven gear through the meshing pair, realizing power reversal and transmission. The gear meshing transmission has high precision and fast response, ensuring the synchronous movement of the double-sided clamping mechanism; the rotating connection method (such as bearing fit) reduces transmission friction, improves the durability of the mechanism, and provides a stable power transmission path for the clamping action.

[0012] Furthermore, the power mechanism includes a crank and a drive shaft. The drive shaft is rotatably connected to the frame, and both ends of the drive shaft are fixedly connected to the drive gear. The crank is fixedly connected to one end of the drive shaft.

[0013] The crank handle serves as the operating end, with the drive shaft passing through the frame and fixedly connected to the dual-sided drive gears. When the crank handle is manually turned, the drive shaft rotates synchronously, driving the dual-sided drive gears to rotate at the same speed, achieving a power input mode of single-sided operation and dual-sided linkage. This simplifies the operating logic, allowing a single person to drive the dual-sided clamping mechanism via the crank handle, improving clamping efficiency. The rigid connection of the drive shaft ensures consistent movement of the dual-sided drive gears, preventing clamping offset due to power input deviation and enhancing equipment reliability.

[0014] Furthermore, the clamping mechanism includes a hollow inner screw, an outer screw sleeve, and a center. The hollow inner screw is fixedly connected to the shaft of the driven gear. The outer screw sleeve is threadedly connected inside the hollow inner screw. The center is fixedly connected to the outer screw sleeve. The rotation of the nut is constrained between the center or the outer screw sleeve and the frame through mutually cooperating guide rails and grooves.

[0015] The hollow inner screw is fixedly connected to the driven gear. Rotation of the driven gear causes the hollow inner screw to rotate. The outer threaded sleeve is threadedly engaged with the hollow inner screw, and the center is fixedly connected to the outer threaded sleeve. The outer threaded sleeve's rotation is constrained by a guide rail-slide groove (retaining only linear motion freedom). When the hollow inner screw rotates, the outer threaded sleeve drives the center to move linearly along the axis, completing the clamping action of moving closer to / away from the frame's central axis. The screw drive efficiently converts rotational motion into linear motion, achieving precise displacement control (facilitating adaptation to different sizes of I-beams); the guide rail-slide groove constraint eliminates the outer threaded sleeve's self-rotation, ensuring the stability of the center's linear motion and improving clamping accuracy and reliability.

[0016] Furthermore, the guide rail is disposed on the frame, and the sliding groove is formed on the outer wall of the outer threaded sleeve, with the guide rail slidably connected within the sliding groove. The frame is provided with a guide rail, and the outer wall of the outer threaded sleeve has a sliding groove, with the guide rail embedded in the sliding groove and slidingly engaged.

[0017] This structure explicitly restricts the rotational freedom of the outer threaded sleeve, allowing it to move linearly only along the guide rail. Combined with the hollow inner screw-outer threaded pair, the gear rotation is strictly converted into linear motion of the center. Rotational constraint is achieved through a hardware structure (guide rail + slide groove). Compared to complex electronic or flexible constraints, this solution is simpler and more reliable. The sliding fit reduces motion resistance, ensures smooth clamping, and enhances the mechanism's anti-interference capability, ensuring stable movement even under vibration conditions.

[0018] Furthermore, it also includes a locking device for limiting the self-rotation of the drive gear.

[0019] A locking device is added to restrict the autonomous rotation of the drive gear (e.g., during operation, external forces or vibrations may cause the gear to rotate, leading to displacement of the clamping mechanism). By locking the drive gear, the entire transmission chain and clamping mechanism are indirectly locked in place. This solves the risk of "clamping loosening during operation," improving equipment safety and stability; it also adapts to actual production needs (e.g., the need to fix the clamping position during wire feeding), expanding the equipment's application scenarios and enhancing its practicality.

[0020] Furthermore, the locking device adopts a spring pin type locking device.

[0021] A spring-pin type locking device is selected, which uses the elastic force of a spring to drive a pin into the teeth of the drive gear or to create a pin hole in the gear, mechanically locking the drive gear's rotation. External force (such as pulling the pin) can release the lock and restore the gear's rotational freedom. The spring-pin type has a simple structure, low cost, and is easy to integrate into existing frames; the locking / unlocking operation is convenient, allowing workers to quickly switch between states, balancing production efficiency and safety requirements.

[0022] Furthermore, the spring-pin locking device includes an outer cylinder, a spring, a pin, and a clip; the outer cylinder has a spring cavity, the top of the spring is connected to the top of the spring cavity, the pin passes through both the outer cylinder and the spring, the pin has a clip plate that abuts against the bottom of the spring, the top of the pin is connected to a handle, and the clip is detachably clipped between the handle and the outer cylinder; when restricting the rotation of the drive gear, the clip is removed, and the spring pushes the clip plate to make the pin engage with the gear teeth; when the drive gear needs to be rotated, the handle is lifted to remove the pin, compress the spring, and the clip locks the handle and the outer cylinder together.

[0023] The outer cylinder provides installation space, the spring is placed in the spring cavity, and the pin passes through the spring and is fitted with a retaining plate (to bear the spring force). To lock, remove the retaining plate; the spring force pushes the retaining plate, and the pin engages between the teeth of the drive gear. To unlock, lift the handle to compress the spring; the retaining plate engages with the pin between the handle and the outer cylinder, releasing the gear lock. Through the coordinated operation of the spring, retaining plate, and retaining plate, "elastic automatic locking + mechanical limit unlocking" is achieved, resulting in simple operation and high reliability. The handle and retaining plate design reduces worker workload, avoids accidental "locking / unlocking" operations, and further enhances equipment safety and ease of use. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of an I-beam wheel clamping frame according to the present invention;

[0025] Figure 2 This is the front view of the clamping mechanism;

[0026] Figure 3 This is a schematic diagram of the locking device. Detailed Implementation

[0027] The following detailed description illustrates the specific implementation method:

[0028] The reference numerals in the accompanying drawings include: I-beam wheel 1, frame 2, wire guide hole 3, crossbeam 4, wire guide roller 5, crank handle 6, drive shaft 7, drive gear 8, driven gear 9, hollow inner screw 10, outer threaded sleeve 11, center 12, slide groove 13, slide rail 14, outer cylinder 15, spring cavity 16, pin 17, clamping plate 18, spring 19, clip 20, handle 21.

[0029] Example 1 is basically as shown in the appendix. Figure 1As shown: A clamping frame for I-beam wheels, the structure includes a frame 2 and an I-beam wheel 1 clamping mechanism; the clamping mechanism is composed of a power mechanism, a gear transmission mechanism, a clamping mechanism and a locking device, and the gear transmission mechanism and the clamping mechanism are mirrored on both sides of the frame 2.

[0030] Looking down at the frame 2, one end is rectangular and the other end is trapezoidal (the overall shape of the frame 2 resembles a small boat). Both ends of the frame 2 have wire-passing holes 3. A crossbeam 4 is located between the two sides of the narrowing section of the frame 2. The crossbeam 4 has a channel along its length for the drive shaft 7 to pass through. A wire-passing hole 3 is also provided in the middle of the crossbeam 4. The three wire-passing holes 3 are coaxial. A wire-passing roller 5 is located between the crossbeam 4 and the narrower end of the frame to reduce wire-passing resistance.

[0031] Power mechanism: includes a crank 6 and a drive shaft 7. The drive shaft 7 passes through the channel on the crossbeam 4 and the frame 2 and is fixedly connected to the two drive gears 8. The crank 6 is fixed to one end of the drive shaft 7.

[0032] Gear transmission mechanism: The driving gear 8 and driven gear 9, which mesh with each other, are rotatably connected to the outer wall of the frame 2.

[0033] Clamping mechanism: combined Figure 2 As shown, the hollow inner screw 10 is fixedly connected to the shaft of the driven gear 9, the outer screw sleeve 11 is located inside the hollow inner screw 10 and is threadedly engaged, and the center 12 is fixedly connected to the outer screw sleeve 11; the frame 2 is provided with a guide rail, and the outer wall of the outer screw sleeve 11 has a sliding groove 13, and the guide rail is embedded in the sliding groove 13 to form a rotational constraint.

[0034] Locking device: combined Figure 3 As shown, a spring 19 and pin 17 structure is adopted, including an outer cylinder 15, a spring 19, a pin 17 and a clip 20. The top of the spring cavity 16 inside the outer cylinder 15 is connected to the spring 19. The pin 17 passes through the spring 19 and abuts against the bottom of the spring 19 through the clip plate 18. The top of the pin 17 is connected to the handle 21. The clip 20 can be locked between the handle 21 and the outer cylinder 15.

[0035] The specific implementation process is as follows:

[0036] Turning the crank 6 causes the drive shaft 7 to drive the two driving gears 8 to rotate synchronously, which in turn drives the driven gear 9 to rotate through gear meshing.

[0037] Driven gear 9 drives hollow inner screw 10 to rotate. Outer screw sleeve 11 cannot rotate due to the constraint of guide rail-slide groove 13. It only moves linearly along the axis of hollow inner screw 10, which drives tip 12 to move closer to / away from the central axis of frame 2, thereby achieving clamping / releasing of I-beam wheel 1.

[0038] When locking is required, remove the clip 20, and the spring 19 pushes the pin 17 into the teeth of the drive gear 8; when unlocking, lift the handle 21 to pull out the pin 17, and the clip 20 engages with the fixed pin 17 between the handle 21 and the outer cylinder 15.

[0039] Example 2 differs from Example 1 in that the linkage method of the clamping mechanism and the gear transmission mechanism using helical coordination and guiding constraint is different. In this scheme, a helical transmission clamping structure of worm gear + lead screw is adopted.

[0040] Improvements to screw drive and guiding constraints:

[0041] Transmission chain adjustment: The gear transmission mechanism is replaced with a combination of "drive gear 8 - worm gear - worm wheel - lead screw":

[0042] The drive gear 8 is coaxially fixed to the worm and rotates with the transmission shaft 7;

[0043] The worm meshes with the worm wheel, the worm wheel shaft is fixedly connected to the lead screw, and the lead screw is rotatably connected to the frame 2;

[0044] The top 12 is engaged with the lead screw thread through an internal thread sleeve (the internal thread sleeve is threaded on the outside of the lead screw). The outer wall of the internal thread sleeve is provided with a sliding groove 13, and the frame 2 is provided with a corresponding linear guide rail. The guide rail is embedded in the sliding groove 13 to form a rotational constraint.

[0045] Working principle:

[0046] The crank 6 drives the transmission shaft 7 → the drive gear 8 drives the worm to rotate → the worm wheel meshes with the worm and drives the lead screw to rotate;

[0047] The inner threaded sleeve is constrained by the guide rail and cannot rotate on its own. It moves linearly along the screw axis, which drives the center 12 to move along the central axis of the frame 2.

[0048] Worm gear drives can provide a reduction ratio, improving the accuracy of clamping force.

Claims

1. A wrench clamping frame, comprising a frame and a wrench mounting mechanism, characterized in that: The I-beam wheel clamping mechanism includes a power mechanism, a gear transmission mechanism mirror-arranged on both sides of the frame, and a clamping mechanism. The power mechanism is used to drive the gear transmission mechanisms on both sides simultaneously. The clamping mechanism and the gear transmission mechanism are linked by a helical engagement and guiding constraint. When the power mechanism drives the gear transmission mechanism to rotate forward / reverse, the clamping mechanism moves towards / away from the central axis of the frame.

2. The I-beam wheel clamping frame according to claim 1, characterized in that: The gear transmission mechanism includes a driving gear and a driven gear that mesh with each other, and both the rotating gear and the driven gear are rotatably connected to the outer wall of the frame.

3. The I-beam wheel clamping frame according to claim 2, characterized in that: The power mechanism includes a crank and a drive shaft. The drive shaft is rotatably connected to the frame, and both ends of the drive shaft are fixedly connected to the drive gear. The crank is fixedly connected to one end of the drive shaft.

4. The I-beam wheel clamping frame according to claim 3, characterized in that: The clamping mechanism includes a hollow inner screw, an outer screw sleeve, and a center. The hollow inner screw is fixedly connected to the shaft of the driven gear. The outer screw sleeve is threaded inside the hollow inner screw. The center is fixedly connected to the outer screw sleeve. The rotation of the nut is constrained between the center or the outer screw sleeve and the frame through mutually cooperating guide rails and grooves.

5. The I-beam wheel clamping frame according to claim 4, characterized in that: The guide rail is mounted on the frame, and the slide groove is formed on the outer wall of the outer threaded sleeve. The guide rail is slidably connected within the slide groove.

6. A clamping frame for I-beam wheels according to any one of claims 3 to 5, characterized in that: It also includes a locking device to limit the self-rotation of the drive gear.

7. The I-beam wheel clamping frame according to claim 6, characterized in that: The locking device is a spring pin type locking device.

8. The I-beam wheel clamping frame according to claim 7, characterized in that: The spring-pin locking device includes an outer cylinder, a spring, a pin, and a clip. The outer cylinder has a spring cavity, with the top of the spring connected to the top of the spring cavity. The pin passes through both the outer cylinder and the spring. The pin has a clip plate that holds against the bottom of the spring. The top of the pin is connected to a handle, and the clip is detachably locked between the handle and the outer cylinder. When the drive gear is restricted from rotating, the clip is removed, and the spring pushes the clip plate to engage the pin with the gear teeth. When the drive gear needs to be rotated, the handle is lifted to remove the pin, compress the spring, and the clip locks the handle between the handle and the outer cylinder.

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