Spool clamping frame

Abstract

The invention discloses a spool clamping frame in the field of steel wire rope production equipment. The spool clamping frame comprises a frame body and a spool clamping mechanism. The clamping mechanism is provided with a power mechanism, gear transmission mechanisms and a clamping mechanism, the gear transmission mechanisms and the clamping mechanism are arranged on the two sides of the frame in a mirroring mode, the power mechanism drives the gear transmission mechanisms on the two sides simultaneously, and the clamping mechanism and the gear transmission mechanisms are in guiding constraint linkage through spiral fit. And the clamping mechanism moves close to / away from the middle shaft of the frame body. According to the scheme, a synergistic system of a power mechanism, a double-side gear transmission mechanism and a clamping mechanism is constructed, a traditional manual drawing chuck mounting mode is replaced, operation is simplified through mechanical transmission, the clamping convenience is improved, clamping symmetry is guaranteed through double-side synchronous driving, the clamping stability of the spool is enhanced, and a foundation is laid for rope combining and paying-off synchronism.

Description

Technical Field

[0001] The invention belongs to the field of steel wire rope production equipment, and in particular relates to a spool clamping frame. Background Art

[0002] In the process of wire rope production, multiple strands of steel wire need to be combined. In order to ensure the quality of the combined wire and the compactness of each wire in the combined rope, it should be ensured that each section of wire is paid out synchronously. The existing pay-off wheel is mostly installed in a frame structure, that is, the pay-off wheel is rotatably installed inside the frame, and the steel wire pulls the pay-off wheel to rotate to achieve pay-off.

[0003] The frame structure is such as announcement number CN211110382U discloses a frame type rope closing vehicle, including a frame (similar to the appearance of a boat), and the two sides of the frame are respectively rotatably installed with an I-wheel clamping mechanism; the I-wheel clamping mechanism includes a chuck, the chuck on the left is rotatably installed with the frame, and the chuck on the right is externally fitted with a sleeve that can slide along the axis, the sleeve is rotatably installed with the frame, and a spring that can be stretched along the axis is provided between the sleeve and the chuck. The axis of the chuck and the sleeve is relatively moved, which facilitates the clamping of the pay-off wheel. In the working process, the chucks on both sides clamp the pay-off wheel and rotate accordingly. When replacing the pay-off wheel, the chuck is pulled outward to increase the distance between the chucks on both sides. After removing the empty pay-off wheel and replacing it with a new pay-off wheel, the chuck is released. Under the action of the spring, the chuck is reset, the pay-off wheel is clamped, and it rotates synchronously therewith.

[0004] CN211110382U discloses a frame-type rope closing vehicle with a simple structure and strong practicality. However, it also has shortcomings in terms of ease of use and safety that need to be urgently addressed. The I-spool clamping mechanism in this solution is used to clamp the I-spool. When in use, the I-spool is removed and clamped by pulling and releasing the chuck, which is laborious to operate and poses a risk of accidental injury. Summary of the Invention

[0005] The present invention aims to provide an I-spool clamping frame to solve the problem of low convenience and safety of the I-spool clamping mechanism in the frame-type rope closing vehicle in the prior art.

[0006] A spool clamping frame in this solution includes a frame body and an I-spool clamping mechanism. The I-spool clamping mechanism includes a power mechanism, a gear transmission mechanism and a clamping mechanism mirror-imaged on both sides of the frame body. 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 means of a spiral fit guide constraint. When the power mechanism drives the gear transmission mechanism to rotate forward / reverse, the clamping mechanism moves toward / away from the central axis of the frame body.

[0007] The working principle of this solution is as follows: the I-shaped wheel clamping mechanism consists of a power mechanism, a double-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-mirrored structure, the movement on both sides is symmetrical. The clamping mechanism and the gear transmission mechanism are linked by a helical fit and a guide constraint. When the gear transmission mechanism rotates, the helical fit (such as a screw-nut pair) converts the rotational motion of the gear into linear motion of the clamping mechanism. The guide constraint (such as a guide rail-slide) limits 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 realized as follows: the power mechanism drives the gear transmission mechanism to rotate forward, and the screw fit causes the clamping mechanism to move closer to the central axis of the frame to complete the clamping of the I-wheel; the driving gear transmission mechanism rotates reversely, and the clamping mechanism moves away from the central axis of the frame to release the I-wheel.

[0009] The beneficial technical effects of this solution are: this solution constructs a "power mechanism + double-sided gear transmission mechanism + clamping mechanism" collaborative system, replacing the traditional "manual pulling chuck installation" method, simplifying the operation through mechanical transmission, and improving the convenience of clamping; the double-sided synchronous drive ensures clamping symmetry, enhances the stability of I-wheel clamping, and lays the foundation for the subsequent synchronization of rope closing and line release.

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

[0011] The driving gear meshes with the driven gear, both of which are rotationally connected to the outer wall of the frame, forming the basic transmission chain. The driving gear receives torque from the power mechanism and transmits power to the driven gear through the meshing pair, achieving power reversal and transmission. The gear meshing transmission has high precision and fast response, ensuring the synchronization of the movement of the two-sided clamping mechanism. Rotational connection methods (such as bearing fit) reduce transmission friction, improve the durability of the mechanism, and provide a stable power transmission path for the clamping action.

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

[0013] The crank handle serves as the operating end, and the drive shaft runs through the frame and is rigidly connected to the driving gears on both sides. When the crank handle is manually turned, the drive shaft rotates synchronously, driving the driving gears on both sides to rotate at the same speed, achieving a single-side operation and dual-side linkage power input mode. This simplifies the operation logic, allowing a single person to actuate both clamping mechanisms with the crank handle, improving clamping efficiency. The rigid connection of the drive shaft ensures consistent movement of the driving gears on both sides, 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 top, the hollow inner screw is fixedly connected to the axis of the driven gear, the outer screw sleeve is threadedly connected to the inside of the hollow inner screw, the top is fixedly connected to the outer screw sleeve, and the top or the outer screw sleeve and the frame are used to constrain the rotation of the nut through mutually cooperating guide rails and slide grooves.

[0015] The hollow internal screw is fixedly connected to the driven gear. Rotation of the driven gear rotates the hollow internal screw. The external sleeve mates with the threads of the hollow internal screw, and the centering tip is fixedly connected to the external sleeve. A guide rail and a slideway constrain the rotation of the external sleeve (retaining only linear freedom of movement). As the hollow internal screw rotates, the external sleeve drives the centering tip in a linear motion along its axis, completing the clamping action toward or away from the center axis of the frame. The spiral drive efficiently converts rotational motion into linear motion, achieving precise displacement control (facilitating adaptation to different I-shaped pulley sizes). The guide rail and slideway constraint eliminates the self-rotation of the external sleeve, ensuring the stability of the centering tip's linear motion and improving clamping accuracy and reliability.

[0016] Furthermore, the guide rail is arranged on the frame, the chute is opened on the outer wall of the outer screw sleeve, and the guide rail is slidably connected in the chute. The frame is provided with the guide rail, the chute is opened on the outer wall of the outer screw sleeve, and the guide rail is embedded in the chute and slidably matched.

[0017] This structure explicitly constrains the external sleeve's rotational freedom, allowing it to move only linearly along the guide rail. Combined with the hollow internal screw and external sleeve threaded pair, this strictly converts gear rotation into linear motion at the top. This hardware structure (guide rail + slide) achieves rotational constraint, offering a simpler structure and higher reliability than complex electronic controls or flexible constraints. The sliding fit reduces motion resistance, ensuring smooth clamping action and improving the mechanism's anti-interference capabilities, such as stable motion under vibration conditions.

[0018] Furthermore, a locking device is included for limiting the self-rotation of the driving gear.

[0019] A locking device is added to limit the autonomous rotation of the driving gear (e.g., if the gear rotates due to external forces or vibration during operation, causing the clamping mechanism to shift). By locking the driving gear, the entire drive chain and the clamping mechanism are indirectly locked in place. This eliminates the risk of loose clamping during operation, improving equipment safety and stability. It also adapts to actual production needs (e.g., requiring a fixed clamping position during wire laying), expands equipment application scenarios, and enhances practicality.

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

[0021] A spring-pin locking device was selected. This mechanism uses spring force to drive a pin into the teeth of the active gear, or to create a pinhole in the gear, mechanically locking the active gear. External force (such as pulling on the pin) releases the lock, restoring the gear's freedom of rotation. The spring-pin design offers a simple, low-cost structure that easily integrates into existing frameworks. The locking / unlocking mechanism is simple, allowing workers to quickly switch between positions, ensuring a balanced balance between productivity and safety.

[0022] Furthermore, the spring pin locking device includes an outer tube, a spring, a pin and a clip; the outer tube is provided with a spring cavity, the top of the spring is connected to the top of the spring cavity, the pin passes through the outer tube and the spring at the same time, the pin is provided with a clamping plate that is supported against the bottom of the spring, the top of the pin is connected to a handle, and the clamp is detachably clamped between the handle and the outer tube; when limiting the rotation of the driving gear, the clamp is removed, and the spring pushes the clamping plate to make the pin clamped into the gear teeth; when the driving gear needs to be rotated, the handle is lifted to pull out the pin, compress the spring, and the clamp is locked between the handle and the outer tube.

[0023] The outer cylinder provides installation space, with the spring positioned in the spring cavity. The pin is inserted into the spring and fitted with a retaining plate (which absorbs the spring force). To lock, the retaining plate is removed, and the spring force pushes the retaining plate, snapping the pin between the teeth of the active gear. To unlock, the handle is lifted to compress the spring, causing the retaining plate to snap into place between the handle and the outer cylinder, releasing the gear lock. The spring, retaining plate, and retaining plate work together to achieve "elastic automatic locking + mechanical limited unlocking," offering simple operation and high reliability. The handle and retaining plate design reduces operator effort, preventing accidental locking / unlocking operations and further enhancing the safety and usability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural schematic diagram of a spool clamping frame of the present invention;

[0025] Figure 2 It is the main view of the clamping mechanism;

[0026] Figure 3 It is a structural diagram of the locking device. DETAILED DESCRIPTION

[0027] The following is further described in detail through specific implementation methods:

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

[0029] Example 1 is basically as shown in the attached Figure 1As shown: A spool clamping frame, the structure includes a frame body 2 and a spool 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 body 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 is like a boat). Wire holes 3 are provided at both ends of the frame 2. A crossbeam 4 is provided between the two sides of the narrow part of the frame 2. A channel is provided inside the crossbeam 4 along its length for the transmission shaft 7 to pass through. A wire hole 3 is also provided in the middle of the crossbeam 4. The three wire holes 3 are coaxial. A wire roller 5 is provided between the crossbeam 4 and the narrow end of the frame to reduce the resistance of the wire passing.

[0031] The power mechanism includes a crank 6 and a transmission shaft 7. The transmission shaft 7 passes through the channel on the beam 4 and the frame 2 and is fixedly connected to the driving gears 8 on both sides. The crank 6 is fixed to one end of the transmission shaft 7.

[0032] Gear transmission mechanism: The driving gear 8 and the driven gear 9 that mesh with each other are both 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 axis of the driven gear 9, the outer screw sleeve 11 is located in the hollow inner screw 10 and is threadedly engaged, and the top 12 is fixedly connected to the outer screw sleeve 11; the frame 2 is provided with a guide rail, and a slide groove 13 is opened on the outer wall of the outer screw sleeve 11, and the guide rail is embedded in the slide groove 13 to form a rotation constraint.

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

[0035] The specific implementation process is as follows:

[0036] Turn the crank 6, the transmission shaft 7 drives the driving gears 8 on both sides to rotate synchronously, and drives the driven gear 9 to rotate through gear meshing;

[0037] The driven gear 9 drives the hollow inner screw 10 to rotate, and the outer screw sleeve 11 cannot rotate due to the constraint of the guide rail-slide groove 13. It can only move linearly along the axis of the hollow inner screw 10, driving the top 12 to move toward / away from the central axis of the frame 2, thereby clamping / loosening the I-shaped wheel 1;

[0038] When locking is required, the clip 20 is removed, and the spring 19 pushes the pin 17 to be clamped between the teeth of the driving gear 8; when unlocking, the handle 21 is lifted to pull out the pin 17, and the clip 20 is clamped between the handle 21 and the outer tube 15 to fix the pin 17 position.

[0039] The difference between Example 2 and Example 1 is that the clamping mechanism and the gear transmission mechanism adopt a different linkage method of spiral matching guide constraint. This solution adopts a spiral transmission clamping structure of worm gear + screw.

[0040] Screw drive and guide constraint improvements:

[0041] Transmission chain adjustment: The gear transmission mechanism is replaced with the "driving gear 8-worm-worm wheel-screw" combination:

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

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

[0044] The top 12 cooperates with the screw thread through the inner screw sleeve (the inner screw sleeve thread sleeve is arranged outside the screw), the outer wall of the inner screw sleeve is provided with a slide groove 13, and the frame 2 is correspondingly provided with a linear guide rail, and the guide rail is embedded in the slide groove 13 to form a rotation constraint.

[0045] Working principle:

[0046] The crank 6 drives the transmission shaft 7 → the driving gear 8 drives the worm to rotate → the worm wheel engages the worm and drives the screw to rotate;

[0047] The inner screw sleeve is constrained by the guide rail and cannot rotate. It moves linearly along the axis of the screw, driving the top 12 to move along the central axis of the frame 2.

[0048] Worm and worm gear transmission can provide a reduction ratio and improve the clamping force accuracy.

Claims

1. A spool clamping frame, comprising a frame body and a spool clamping mechanism, characterized in that: The I-spool clamping mechanism includes a power mechanism, a gear transmission mechanism and a clamping mechanism mirror-imaged on both sides of the frame. 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 spiral fitting guide constraint. When the power mechanism drives the gear transmission mechanism to rotate forward / reverse, the clamping mechanism moves toward / away from the central axis of the frame.

2. The spool clamping frame according to claim 1, characterized in that: The gear transmission mechanism comprises a driving gear and a driven gear meshing with each other, and the rotating gear and the driven gear are both rotatably connected to the outer side wall of the frame.

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

4. The spool clamping frame according to claim 3, characterized in that: The clamping mechanism includes a hollow inner screw, an outer screw sleeve and a top. The hollow inner screw is fixedly connected to the axis of the driven gear, the outer screw sleeve is threadedly connected to the inside of the hollow inner screw, the top is fixedly connected to the outer screw sleeve, and the top or the outer screw sleeve and the frame are constrained to rotate by mutually cooperating guide rails and sliding grooves.

5. The spool clamping frame according to claim 4, characterized in that: The guide rail is arranged on the frame, the slide groove is opened on the outer wall of the outer screw sleeve, and the guide rail is slidably connected in the slide groove.

6. The spool clamping frame according to any one of claims 3 to 5, characterized in that: It also includes a locking device for limiting the automatic rotation of the driving gear.

7. The spool clamping frame according to claim 6, characterized in that: The locking device adopts a spring pin type locking device.

8. The spool clamping frame according to claim 7, characterized in that: The spring pin locking device includes an outer tube, a spring, a pin and a clip; the outer tube is provided with a spring cavity, the top of the spring is connected to the top of the spring cavity, the pin passes through the outer tube and the spring at the same time, the pin is provided with a clamping plate that is supported against the bottom of the spring, the top of the pin is connected to a handle, and the clamp is detachably clamped between the handle and the outer tube; when limiting the rotation of the driving gear, the clamp is removed, and the spring pushes the clamping plate to make the pin clamped into the gear teeth; when the driving gear needs to be rotated, the handle is lifted to pull out the pin, compress the spring, and the clamp is clamped between the handle and the outer tube to lock.

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