A segmented support device for long lead screws

Abstract

The present application relates to the technical field of screw rod transmission, and particularly relates to a segmented support device for a long screw rod, which comprises a long screw rod connected with a sliding table through rotation, and a sliding block one is threadedly connected to the outer side of the long screw rod, further comprising two supporting blocks slidingly arranged on the upper side of the sliding table, a top block movably arranged on the upper side of each of the two supporting blocks, and a plurality of supporting springs built-in connected to the interior of each of the two top blocks through a plurality of spring grooves. The two supporting blocks are movably arranged below the long screw rod, the upper side of each of the two supporting blocks is provided with a top block, the upper side of each of the two top blocks is provided with a bearing bush, and each of the two top blocks is supported by a plurality of supporting springs, which respectively apply upward supporting force to the two top blocks and the two bearing bushes, and the two bearing bushes apply upward supporting force to two points on the lower side of the long screw rod, thereby playing a role of segmented support, avoiding the too long long screw rod from being bent and deformed downward, and ensuring the stability and accuracy of the long screw rod transmission.

Description

Technical Field

[0001] This invention relates to the field of lead screw transmission technology, and in particular to a segmented support device for long lead screws. Background Technology

[0002] In heavy equipment such as large CNC machine tools, gantry machining centers, and precision grinding machines, long lead screws (usually referring to ball screws or trapezoidal lead screws with a length of more than 5 meters) are core transmission components, and their straightness and dynamic stability directly affect the machining accuracy.

[0003] Because lead screws are relatively long and are generally made of alloy steel with a certain degree of toughness, the middle section of a long lead screw is prone to slight downward bending under its own weight. Although the degree of bending is very small and difficult to observe with the naked eye, when the lead screw rotates at high speed, the centrifugal force will cause the lead screw to vibrate, thereby reducing the stability and accuracy of the lead screw transmission, and thus reducing the machining accuracy of the machine tool. Summary of the Invention

[0004] The purpose of this invention is to provide a segmented support device for long lead screws to solve the problems mentioned in the background art.

[0005] The technical solution of the present invention is as follows: a segmented support device for a long lead screw, comprising a long lead screw rotatably connected via a slide table, a slider 1 threadedly connected to the outer side of the long lead screw, and two supports slidably disposed on the upper side of the slide table. A top block is movably disposed on the upper side of each of the two supports, and multiple support springs are internally connected to each of the two top blocks via multiple spring grooves. The lower ends of the multiple support springs are connected to top columns extending to the outside. The device also includes a wear compensation mechanism for adjusting the compression of the multiple support springs. The wear compensation mechanism includes two side plates fixed to the upper side of the supports, a bracket fixed to the lower ends of the multiple top columns, a roller rotatably connected inside the bracket, a screw rotatably connected through the two side plates, a slider 2 threadedly connected to the outer side of the screw, a wedge block fixed to the upper side of the slider 2, a displacement triggering mechanism for detecting the displacement of the top block, and an intermittent transmission mechanism for driving the screw to rotate intermittently in a directional direction. The intermittent transmission mechanism includes a friction wheel capable of transmitting unidirectional rotational torque to the screw, and a clutch mechanism for separating and engaging the friction wheel with the screw.

[0006] Preferably, the clutch mechanism includes a guide cylinder fixed to a side plate near the friction wheel, a rotating cylinder movably disposed at one end of the friction wheel, and a splined sleeve shaft fixed to one end of the outer side of the screw. The rotating cylinder is rotatably sleeved on the outer side of the screw, and a second friction plate is fixed to one end of the rotating cylinder. A splined sleeve is slidably sleeved on the outer side of the splined sleeve shaft, and a first friction plate is fixed to one end of the splined sleeve. An electromagnet is installed on one end of the inner side of the guide cylinder, and a slide rod is slidably inserted into the other end of the guide cylinder. One end of the slide rod is elastically connected to one end of the inner side of the guide cylinder through a separation spring, and the other end of the slide rod is movably connected to the splined sleeve through a lever reversing mechanism.

[0007] Preferably, the lever reversing mechanism includes a bracket fixed to one side of the side plate, two first sliding pins and two second sliding pins respectively fixed to the outside of the slide rod and the spline sleeve. One end of the bracket is rotatably connected to two levers, and two sliding pin grooves are symmetrically opened at both ends of the two levers. The two first sliding pins and the two second sliding pins are slidably connected to the inner side of the sliding pin grooves at corresponding positions.

[0008] Preferably, the friction wheel and the rotating drum are connected by a one-way bearing for unidirectional transmission.

[0009] Preferably, the displacement triggering mechanism includes two contact brackets fixed on the upper side of the bracket and a hanging rod fixed on the inner side of the top block. A conductive plate is movably sleeved on the outer side of the hanging rod. The upper side of the conductive plate is elastically connected to the inner side of the top block through a compression spring. A positive contact and a negative contact are respectively installed on the upper ends of the two contact brackets.

[0010] Preferably, an adjusting nut for supporting the conductive plate is threadedly connected to the outer side of the boom located below the conductive plate.

[0011] Preferably, a groove is provided at the middle section of each of the two support blocks, and the two top blocks are respectively located inside the two grooves. Sliding grooves are symmetrically provided at both ends of the inner side of the two grooves, and sliding strips that are slidably connected to the inner side of the sliding grooves are fixed at both ends of the two top blocks.

[0012] Preferably, each of the top blocks has two bearing pressure plates fixed to its upper side at both ends of the bearing bush by bolts.

[0013] Preferably, a long guide bar is fixed on the upper side of the slide table at a position directly below the long lead screw, and guide sliders that are slidably connected to the outside of the long guide bar are fixed on the lower side of both supports.

[0014] Preferably, the two guide sliders are fixed together by two fixing rods.

[0015] The present invention provides an improved segmented support device for long lead screws, which has the following improvements and advantages compared with the prior art:

[0016] Firstly, this invention movably sets two support blocks below the long lead screw, with top blocks on the upper side of the two support blocks and bearing bushes on the upper side of the two top blocks. Both top blocks are supported by multiple support springs, which apply upward support forces to the two top blocks and the two bearing bushes respectively. The two bearing bushes, in turn, apply upward support forces to two points on the lower side of the long lead screw, thus achieving segmented support and preventing the excessively long lead screw from bending and deforming downwards, ensuring the stability and accuracy of the long lead screw transmission.

[0017] Secondly, this invention also utilizes a wear compensation mechanism. When the inner surface of the bearing shell wears and thins, the top block and the bearing shell will move upward a short distance. The displacement triggering mechanism can sense the height of the top block in real time. When the top block moves upward a specified height, it will cause the positive and negative contacts in the displacement triggering mechanism to conduct, thereby activating the electromagnet circuit in the intermittent transmission mechanism. This generates an electromagnetic attraction on the slide rod, which, through the lever reversing mechanism, drives the first friction plate to move and press against the second friction plate, thus connecting the friction wheel to the screw. When the support block moves to the end, the friction wheel will contact a friction plate at the end, and... Under the action of friction, the friction wheel rotates at a certain angle. The friction wheel drives the screw to rotate at a certain angle through the rotating cylinder, the second friction plate, the first friction plate, the spline sleeve, and the spline shaft. The screw then drives the second slider and the wedge block to move laterally a short distance. The wedge block pushes the bracket and multiple top columns to move upward. The upward movement of the multiple top columns compresses multiple support springs, thereby increasing the support force of the multiple support springs on the top block and the bearing. The bearing increases the support force on the long screw, ensuring the constant support force of the bearing on the long screw and effectively preventing the stability of the support force on the long screw from being affected by the wear of the bearing. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a partially enlarged structural schematic diagram of the present invention;

[0021] Figure 3 This is a cross-sectional view of the top block in this invention;

[0022] Figure 4This is a first-view cross-sectional structural diagram of the top block and the support block in this invention;

[0023] Figure 5 This is a schematic diagram of the second-view cross-sectional structure of the top block and the support block in this invention;

[0024] Figure 6 For the present invention Figure 4 Enlarged structural diagram at point A;

[0025] Figure 7 For the present invention Figure 5 Enlarged structural diagram at point B;

[0026] Figure 8 This is a schematic diagram of the structure of the two bearing bushes in the present invention with their heads close to one end;

[0027] Figure 9 For the present invention Figure 8 Enlarged structural diagram at point C;

[0028] Figure 10 This is a schematic diagram showing the disassembled structure of the bearing bush and bearing bush pressure plate in this invention.

[0029] Figure label:

[0030] 1. Long lead screw; 2. Slider 1; 3. Support block; 4. Top block; 5. Bearing shell; 6. Bearing shell pressure plate; 7. Spring groove; 8. Support spring; 9. Top column; 10. Bracket; 11. Guide slider; 12. Long guide bar; 13. Sliding bar; 14. Slide groove; 15. Slide table; 16. Fixed rod; 101. Screw; 102. Slider 2; 103. Wedge block; 104. Roller; 105. Side plate; 201. Guide cylinder; 202. Rotary cylinder; 203. Friction wheel; 204. Electromagnet; 205. Sliding rod; 206. 207. Separation spring; 208. Bracket; 209. Lever; 210. Sliding pin groove; 211. First sliding pin; 212. Splined sleeve shaft; 213. Splined sleeve; 214. Second sliding pin; 215. First friction plate; 216. Second friction plate; 217. One-way bearing; 218. Friction plate; 301. Contact frame; 302. Positive contact; 303. Negative contact; 304. Hanging rod; 305. Conductive plate; 306. Downward compression spring; 307. Adjusting nut; 308. Guide rod; 309. Fixed cross plate. Detailed Implementation

[0031] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] This invention provides an improved segmented support device for long lead screws. The technical solution of this invention is as follows:

[0033] like Figures 1 to 10 As shown, this embodiment of the invention provides a segmented support device for a long lead screw, including a long lead screw 1 rotatably connected via a slide table 15, a slider 2 threadedly connected to the outer side of the long lead screw 1, and two support blocks 3 slidably disposed on the upper side of the slide table 15. A top block 4 is movably disposed on the upper side of each of the two support blocks 3. Multiple support springs 8 are internally connected to each of the two top blocks 4 via multiple spring grooves 7. The lower ends of the multiple support springs 8 are connected to top posts 9 extending to the outside. The device also includes a wear compensation mechanism for adjusting the compression of the multiple support springs 8. The wear compensation mechanism includes two supports fixed to the upper side of the support blocks 3. The system includes a side plate 105, a bracket 10 fixed to the lower end of multiple top columns 9, a roller 104 rotatably connected inside the bracket 10, a screw 101 rotatably connected between two side plates 105, a slider 102 threadedly connected to the outer side of the screw 101, a wedge block 103 fixed to the upper side of the slider 102, a displacement triggering mechanism for detecting the displacement of the top block 4, and an intermittent transmission mechanism for driving the screw 101 to rotate intermittently in a directional manner. The intermittent transmission mechanism includes a friction wheel 203 that can transmit unidirectional rotational torque to the screw 101, and a clutch mechanism for separating and engaging the friction wheel 203 with the screw 101.

[0034] Furthermore, the clutch mechanism includes a guide cylinder 201 fixed on a side plate 105 near the friction wheel 203, a rotating cylinder 202 movably disposed at one end of the friction wheel 203, and a splined sleeve shaft 211 fixed to one end of the outer side of the screw 101. The rotating cylinder 202 is rotatably sleeved on the outer side of the screw 101, and a second friction plate 215 is fixed to one end of the rotating cylinder 202. A splined sleeve 212 is slidably sleeved on the outer side of the splined sleeve shaft 211, and a first friction plate 214 is fixed to one end of the splined sleeve 212. An electromagnet 204 is installed on one end of the inner side of the guide cylinder 201, and a slide rod 205 is slidably inserted into the other end of the guide cylinder 201. One end of the slide rod 205 is elastically connected to the inner end of the guide cylinder 201 via a separation spring 206, and the other end of the slide rod 205 is movably connected to the spline sleeve 212 via a lever reversing mechanism. The lever reversing mechanism includes a bracket 207 fixed on one side of the side plate 105, two first sliding pins 210 and two second sliding pins 213 respectively fixed on the outside of the slide rod 205 and the spline sleeve 212. One end of the bracket 207 is rotatably connected to two levers 208. Two sliding pin grooves 209 are symmetrically opened at both ends of the two levers 208. The two first sliding pins 210 and the two second sliding pins 213 are slidably connected to the inner side of the corresponding sliding pin grooves 209.

[0035] The clutch mechanism is used to separate and engage the first friction plate 214 and the second friction plate 215. When the two are separated, the friction wheel 203 will not transmit torsional torque to the screw 101 when it rotates. Conversely, when the friction wheel 203 rotates, it can transmit torsional torque to the screw 101, thereby driving the slider 102 and the wedge block 103 to move laterally. The wedge block 103 drives the bracket 10 to move upward, and the bracket 10 drives multiple top posts 9 to move upward. The multiple top posts 9 compress multiple support springs 8 respectively, thereby adjusting the support force of the support springs 8 on the top block 4 and the bearing 5, and thus adjusting the support force of the bearing 5 on the long screw 1.

[0036] Furthermore, the friction wheel 203 and the rotating drum 202 are connected by a one-way bearing 216 for one-way transmission.

[0037] The friction wheel 203 can only drive the rotating drum 202 to rotate in one direction, thus driving the screw 101 to rotate in one direction. When the wear compensation mechanism is running, it only drives the slider 102 and the wedge block 103 to move in one direction, thus only pushing the bracket 10 and multiple top columns 9 to move upward, and thus only compressing multiple support springs 8.

[0038] Furthermore, the displacement triggering mechanism includes two contact frames 301 fixed on the upper side of the bracket 10 and a hanging rod 304 fixed on the inner side of the top block 4. A conductive plate 305 is movably sleeved on the outer side of the hanging rod 304. The upper side of the conductive plate 305 is elastically connected to the inner side of the top block 4 through a compression spring 306. A positive contact 302 and a negative contact 303 are respectively installed on the upper end of the two contact frames 301.

[0039] When the inner surface of the bearing shell 5 wears and becomes thinner, the top block 4 and the bearing shell 5 will move upward a short distance. The displacement triggering mechanism can sense the height of the top block 4 in real time. When the top block 4 moves up a specified height, the positive contact 302 and the negative contact 303 in the displacement triggering mechanism will be connected, thereby turning on the circuit of the electromagnet 204 in the intermittent transmission mechanism, thus realizing the combination of the first friction plate 214 and the second friction plate 215, and realizing the transmission of the rotational torque of the friction wheel 203 to the first friction plate 214 and the screw 101.

[0040] Furthermore, an adjusting nut 307 for supporting the conductive plate 305 is threadedly connected to the outer side of the rod 304 at a position below the conductive plate 305.

[0041] By rotating the adjusting nut 307, when the adjusting nut 307 moves downward, the conductive plate 305 will move downward under the pushing action of the compression spring 306. When the adjusting nut 307 moves upward, it will push the conductive plate 305 upward, thereby adjusting the height of the conductive plate 305 and thus the gap between the conductive plate 305 and the positive contact 302 and the negative contact 303. By reducing the gap, when the wear of the bearing 5 surface is relatively light, the compression of multiple support springs 8 can be automatically adjusted, thereby adjusting the support force of the bearing 5 on the long lead screw 1 in a timely manner. If the gap increases, the compression of the support springs 8 will only be triggered when the wear of the bearing 5 surface is more severe, thereby extending the time interval for compensating the support force of the long lead screw 1. In actual use and debugging, the gap between the conductive plate 305 and the positive contact 302 and the negative contact 303 needs to be adjusted to a suitable size according to the working intensity of the long lead screw 1. It should not be too large or too small.

[0042] Furthermore, grooves are provided at the middle section of both support blocks 3, and two top blocks 4 are located inside the two grooves respectively. Slide grooves 14 are symmetrically provided at both ends of the inner side of the two grooves, and slide strips 13 that are slidably connected to the inner side of the slide grooves 14 are fixed at both ends of the two top blocks 4.

[0043] Through the sliding engagement between the slider 13 and the groove 14, the top block 4 moves up and down in the vertical direction, thereby driving the bearing 5 to move up and down vertically, so that the bearing 5 can be located exactly on the lower side of the long screw 1.

[0044] Furthermore, each top block 4 has two bearing pressure plates 6 fixed to its upper side at both ends of the bearing shell 5 by bolts;

[0045] Bolts secure the two bearing pressure plates 6 to the upper side of the top block 4, thus pressing and fixing the bearing 5 into the arc-shaped groove on the upper side of the top block 4. The bearing 5 can be removed by unbolting the two bearing pressure plates 6, facilitating its replacement. (e.g.) Figure 10 (As shown).

[0046] Furthermore, a long guide bar 12 is fixed on the upper side of the slide table 15 directly below the long lead screw 1, and guide sliders 11 that are slidably connected to the outside of the long guide bar 12 are fixed on the lower side of the two support blocks 3. The two guide sliders 11 are fixed together by two fixing rods 16.

[0047] Through the sliding engagement between the two guide sliders 11 and the long guide bar 12, the two support blocks 3 can move linearly along the length direction of the long guide bar 12, thereby allowing the two bearings 5 ​​to move linearly along the length direction of the long lead screw 1, supporting the long lead screw 1 without affecting the movement of the slider 1 on the long lead screw 1.

[0048] Working principle: When the length of the long lead screw 1 exceeds a certain value, a slight downward bend will occur at its mid-section. To ensure transmission stability and accuracy, two support blocks 3 are movably installed below the long lead screw 1. A top block 4 is installed on the upper side of the two support blocks 3, and a bearing 5 is installed on the upper side of the two top blocks 4. A support spring 8 is installed inside each of the two top blocks 4. A top column 9 is connected to the lower end of each support spring 8. A bracket 10 is fixed to the lower end of the multiple top columns 9. The lower end of the bracket 10 is supported by a slider 102 and a wedge block 103. Therefore, the multiple top columns 9 can... Multiple support springs 8 apply a vertically upward supporting force to the top block 4, thereby providing a supporting force to the bearing 5. This allows the bearing 5 to provide a vertically upward supporting force to the lower side of the long lead screw 1. Then, through the sliding engagement between the two guide sliders 11 and the long guide bar 12, the two support blocks 3 can move linearly along the length of the long guide bar 12, allowing the two bearings 5 ​​to move linearly along the length of the long lead screw 1. When slider 12 is at the end of the long lead screw 1, one of the support blocks 3 is pushed to the end by slider 12, while the other support block 3 is closer to the middle section of the long lead screw 1. Figure 8 As shown, the support block 3 and bearing 5 located in the middle section support the middle section of the long screw 1. When the slider 2 moves from the end of the long screw 1 to the middle section, the two support blocks 3 are not pushed by the slider 2 and remain stationary. When the slider 2 moves to the middle section of the long screw 1, it will push one of the support blocks 3 originally located in the middle section, thereby pushing the middle support block 3 towards the other end of the long screw 1. This support block 3 drives the original end support block 3 to move towards the middle section of the long screw 1 through the two fixed rods 16. Therefore, when the slider 2 moves to any position outside the long screw 1, the two support blocks 3 can drive the two bearings 5 ​​on the upper side to provide segmented support for the slider 2, preventing the slider 2 from bending and deforming downwards, and ensuring transmission stability.

[0049] As the two bearing shells 5 rub against the outer side of the long screw 1, the inner surface of the bearing shells 5 will wear down, making the thickness of the bearing shells 5 thinner. Under the elastic force of the multiple support springs 8, an upward thrust will be applied to the top block 4 and the bearing shells 5. When the thickness of the bearing shells 5 becomes thinner, the top block 4 and the bearing shells 5 will move upward a small distance, so that the bearing shells 5 always keep in contact with the outer side of the long screw 1. If the wear of the bearing shells 5 is too large, the upward distance of the top block 4 and the bearing shells 5 will also increase, resulting in a decrease in the compression of the multiple support springs 8, which will reduce the support force provided to the top block 4 and the bearing shells 5, thus reducing the support force on the long screw 1. If the support force of the bearing shells 5 on the long screw 1 is too small, the middle section of the long screw 1 will also bend and deform downward.

[0050] To ensure that the bearing 5 can still apply a constant supporting force to the long screw 1 after wear, a wear compensation mechanism is set up. The wear compensation mechanism includes a displacement triggering mechanism and an intermittent transmission mechanism. When the bearing 5 is gradually worn, the top block 4 will slowly move upward. The top block 4 will drive the lifting rod 304 in the displacement compensation mechanism to move upward. The lifting rod 304 drives the conductive plate 305 to move upward through the adjusting nut 307. It should be noted that the positive contact 302 and the negative contact 303 are electrically connected to the two contacts of the switch in the circuit of the electromagnet 204. Since there is a certain gap between the upper side of the conductive plate 305 and the positive contact 302 and the negative contact 303, when the conductive plate 305 moves upward until it contacts the positive contact 302 and the negative contact 303, the positive contact 302 and the negative contact 303 are connected through the conductive plate 305, thereby connecting the circuit of the electromagnet 204 in the intermittent transmission mechanism.

[0051] When the electromagnet 204 in the intermittent transmission mechanism is energized, it generates an electromagnetic attraction force on the slide rod 205, which is made of carbon steel. Under this electromagnetic attraction, the slide rod 205 moves inward toward the guide cylinder 201, compressing the separation spring 206. Simultaneously, the slide rod 205 drives the two first sliding pins 210 in the lever reversing mechanism to move toward the guide cylinder 201. Through the sliding engagement between the two first sliding pins 210 and the two sliding pin grooves 209, the upper ends of the two levers 208 can rotate toward the guide cylinder 201, causing the lower ends of the two levers 208 to move toward the friction... When the wheel 203 rotates in the direction of the friction wheel 203, the lower ends of the two levers 208 drive the spline sleeve 212 to move along the outside of the spline sleeve shaft 211 towards the direction of the friction wheel 203 through the two second sliding pins 213. The spline sleeve 212 then drives the first friction plate 214 at one end to approach the second friction plate 215, so that the first friction plate 214 is pressed against one side of the second friction plate 215. At this time, the friction wheel 203 can be fixedly connected to the screw 101 through the rotating cylinder 202, the second friction plate 215, the first friction plate 214, the spline sleeve 212, and the spline sleeve shaft 211.

[0052] It should be noted that friction plates 217 are fixed at both ends of the upper side of the slide table 15, corresponding to the positions of the two friction wheels 203. When the support block 3 is pushed to the end by the slider 2, the friction wheel 203 connected to the screw 101 will generate friction with the friction plate 217. Under the action of friction, the friction wheel 203 will rotate at a certain angle. Since the friction wheel 203 is connected to the rotating drum 202 in one-way transmission through the one-way bearing 216, the friction wheel 203 can drive the rotating drum 202 to rotate through the one-way bearing 216. However, when the friction wheel 203 rotates in the opposite direction, the one-way bearing 216 will not drive the rotating drum 202 to rotate in the opposite direction. When the rotating drum 202 drives the second friction plate 215 to rotate, the second friction plate 215 drives the first friction plate 214 to rotate through static friction. The first friction plate 214 drives the spline sleeve 212 to rotate. The spline sleeve 212 drives the screw 101 to rotate through the spline sleeve shaft 211. The screw 101 can rotate at a small angle. When the screw 101 rotates, it drives the slider 102 and the wedge block 103 to move laterally a small distance through the thread. Since the upper side of the wedge block 103 is an inclined surface, the wedge block 103 can roll and adapt to the roller 104 when it moves, thereby applying vertical force to the bracket 10 through the roller 104. The upward thrust pushes the bracket 10 upward a certain distance. The bracket 10 then compresses multiple support springs 8 through multiple top columns 9. After the support springs 8 are compressed, the supporting force on the top block 4 and the bearing 5 is increased, thereby increasing the supporting force on the long lead screw 1. Moreover, as the bracket 10 moves upward a certain distance, it also drives the two contact brackets 301 to move upward synchronously, thereby driving the positive contact 302 and the negative contact 303 to move upward a certain distance, while the height of the conductive plate 305 remains unchanged until the positive contact 302 and the negative contact 303 are aligned with the conductive plate 305. The new separation disconnects the electrical connection between the positive contact 302 and the negative contact 303, thereby disconnecting the circuit of the electromagnet 204. The electromagnet 204 loses its electromagnetic attraction to the slide bar 205. At this time, under the elastic force of the separation spring 206, the slide bar 205 is pushed outward. Through the principle of the lever reversing mechanism, the first friction plate 214 and the second friction plate 215 can be separated, thereby separating the friction wheel 203 from the screw 101. At this time, the rotation of the friction wheel 203 no longer drives the screw 101 to rotate. Until the bearing 5 is worn to a certain extent again, the above principle will be triggered again.

[0053] By rotating the adjusting nut 307, when the adjusting nut 307 moves downward, the conductive plate 305 moves downward under the pushing action of the compression spring 306. When the adjusting nut 307 moves upward, it pushes the conductive plate 305 upward, thereby adjusting the height of the conductive plate 305 and thus the gap between the conductive plate 305 and the positive contact 302 and the negative contact 303. By reducing the gap, the compression of multiple support springs 8 can be automatically adjusted when the wear of the bearing 5 surface is minor, thus timely adjusting the support force of the bearing 5 on the long lead screw 1. If the gap increases, the compression of the adjusting support springs 8 will only be triggered when the wear of the bearing 5 surface is severe, thereby extending the lifespan of the bearing. To compensate for the time interval of the supporting force of the long lead screw 1, in actual use and debugging, it is necessary to adjust the gap between the conductive plate 305 and the positive contact 302 and the negative contact 303 to a suitable size according to the working intensity of the long lead screw 1. It should not be too large or too small. The lower end of the suspension rod 304 is fixed with a fixed horizontal plate 309. Two guide rods 308 are fixed on the lower side of the conductive plate 305 and slide through the fixed horizontal plate 309. Through the guiding effect between the two guide rods 308 and the fixed horizontal plate 309, the conductive plate 305 can be limited to prevent the conductive plate 305 from rotating around the outside of the suspension rod 304, so that the two ends of the conductive plate 305 are always aligned with the positive contact 302 and the negative contact 303.

[0054] The foregoing description enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A segmented support device for a long filament rod, comprising a long filament rod connected by a sliding table, and a sliding block one connected with the outside of the long filament rod by screwing, characterized in that, The two supporting blocks are movably arranged on the upper side of the slide table, and the upper side of each of the two supporting blocks is movably provided with a top block. The wear compensation mechanism is arranged to adjust the compression amount of the plurality of supporting springs. The wear compensation mechanism comprises two side plates fixed on the upper side of the supporting block, and a bracket fixed on the lower end of the plurality of top columns. The inner part of the bracket is rotatably connected with a roller, and the two side plates are rotatably connected with a screw rod. The outer side of the screw rod is threadedly connected with a sliding block two, and the upper side of the sliding block two is fixed with a wedge block.

2. The segmented support device for a filament rod of claim 1, wherein: The displacement triggering mechanism is arranged to detect the displacement of the top block.

3. The segmented support device for a filament rod of claim 1, wherein: The intermittent transmission mechanism is arranged to drive the screw rod to rotate directionally and intermittently.

4. The segmented support apparatus for a filament rod of claim 1, wherein: The intermittent transmission mechanism comprises a friction wheel capable of transmitting a single direction torque to the screw rod, and a clutch mechanism for separating and combining the friction wheel and the screw rod.

5. The segmented support device for a filament rod of claim 4, wherein: The clutch mechanism comprises a guide cylinder fixed on one of the side plates close to the friction wheel, a rotating cylinder movably arranged at one end of the friction wheel, and a spline sleeve shaft fixed on one end of the outer side of the screw rod.

6. The segmented support device for a filament rod of claim 1, wherein: The rotating cylinder is rotatably arranged on the outer side of the screw rod, and one end of the rotating cylinder is fixed with a second friction plate.

7. The segmented support device for a filament rod of claim 1, wherein: The outer side of the spline sleeve shaft is slidably sleeved with a spline sleeve, one end of the spline sleeve is fixed with a first friction plate, one end of the inner side of the guide cylinder is provided with an electromagnet, and the other end of the guide cylinder is slidably inserted with a sliding rod.

8. The segmented support device for a filament rod of claim 1, wherein: One end of the sliding rod is elastically connected with one end of the inner side of the guide cylinder through a separation spring, and the other end of the sliding rod is movably connected with the spline sleeve through a lever reversing mechanism.

9. The segmented support device for a filament rod of claim 8, wherein: The lever reversing mechanism comprises a bracket fixed on one side of the side plate, two first sliding pins and two second sliding pins fixed on the outer side of the sliding rod and the spline sleeve respectively, and two levers rotatably connected with one end of the bracket. Both ends of the two levers are symmetrically provided with two sliding pin grooves. The friction wheel and the rotating cylinder are connected through a one-way bearing. The displacement triggering mechanism comprises two contact point frames fixed on the upper side of the bracket, and a hanging rod fixed on the inner side of the top block. The outer side of the hanging rod movably sleeves a conductive plate, the upper side of the conductive plate is elastically connected with the inner side of the top block through a downward spring, and the upper end of the two contact point frames is respectively provided with a positive contact point and a negative contact point. The outer side of the hanging rod is threadedly connected with an adjusting nut below the conductive plate for supporting the conductive plate. The middle part of each of the two supporting blocks is provided with a groove, and the two top blocks are respectively arranged on the inner side of the two grooves. The two ends of the two grooves are symmetrically provided with sliding grooves, and the two ends of the two top blocks are respectively fixed with sliding strips slidably connected with the inner side of the sliding grooves. The upper side of each top block is fixed with two bearing plates through bolts at both ends of the bearing. The upper side of the slide table is fixed with a long guide strip below the long lead screw, and the lower side of each supporting block is fixed with a guide sliding block slidably connected with the outer side of the long guide strip. The two guide sliding blocks are fixed through two fixed rods.

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