A flexible fixing structure and flexible fixing method for a telescopic arm long-stroke oil cylinder

Abstract

The present invention discloses a flexible fixing structure and a flexible fixing method of a telescopic arm long-stroke oil cylinder, wherein the fixing structure comprises a rotating support mechanism, a flexible fixing mechanism and a sliding support mechanism arranged on the outer wall of the main barrel arm of the telescopic arm for supporting and fixing a small part; the front end, the middle part and the rear end of the long-stroke oil cylinder are respectively movably mounted on the outer wall of the main barrel arm of the telescopic arm by the flexible fixing structure, the rear end of the long-stroke oil cylinder is connected to the rear end outer wall of the main barrel arm by a rotating support mechanism, the front end of the long-stroke oil cylinder is flexibly connected to the middle outer wall of the main barrel arm by a flexible fixing mechanism, and the piston rod end of the long-stroke oil cylinder is slidably connected to the outer wall between the middle part and the front end of the main barrel arm by a sliding support mechanism. The present invention can adjust the flexible elastic force generated by the long-stroke oil cylinder, so that the flexible elastic force generated by the long-stroke oil cylinder is offset within a certain range, thereby avoiding damage and rupture of the oil cylinder steel sleeve and the sealing structure, and improving the service life of the oil cylinder.

Description

Technical Field

[0001] The present invention relates to the technical field of telescopic arm equipment, and in particular to a flexible fixing structure and a flexible fixing method of a telescopic arm long-stroke oil cylinder. Background Art

[0002] The three-section telescopic boom is widely used in the market. It is mainly used for grabbing wood in the wild forest. After felling, it is a new product that needs to be used with an excavator to drag and centrally process wood. Among them, a long-stroke cylinder fixed at the end of the outer wall of the main barrel arm is used to drive the three-section telescopic arm to move back and forth or swing back and forth. When the fixed end of the long-stroke cylinder is extended to the longest, it is very sensitive to whether the front and rear fixed points and the thrust are in a straight line. Due to manufacturing and assembly process errors, it is difficult to make the long-stroke cylinder and the fixed end in a straight line. For this reason, during transportation and use, a large lateral force is formed, and the long-stroke cylinder will vibrate or shake, especially in the middle of the cylinder. The lateral force is all borne by the cylinder steel sleeve and the sealing structure, which reduces the service life of the cylinder and easily causes the seal to fail. Since the three-section telescopic boom is often operated in the mountains and the use environment is bumpy, the additional lateral force aggravates the wear of the cylinder, and the end of the long-stroke cylinder is fixed with large vibration. Moreover, most of the traditional long-stroke hydraulic cylinders are fixed with screws, which is very inconvenient to use and has a poor vibration reduction effect, which is not conducive to the operation of the long-stroke hydraulic cylinder. Summary of the invention

[0003] The purpose of the present invention is to provide a flexible fixing structure and a flexible fixing method for a telescopic arm long-stroke oil cylinder. The present invention can continuously adjust the flexible elastic force generated by the long-stroke oil cylinder, so that when the long-stroke oil cylinder is operating, the flexible elastic force generated by the long-stroke oil cylinder can be offset within a certain range, reducing the wear of the oil cylinder, avoiding damage and rupture of the oil cylinder steel sleeve and the sealing structure, and greatly improving the service life of the oil cylinder. In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0004] According to one aspect of the present invention, a flexible fixing structure of a long-stroke cylinder of a telescopic arm is provided, wherein the fixing structure includes a rotating support mechanism, a flexible fixing mechanism and a sliding support mechanism which are arranged on the outer wall of the main cylinder arm of the telescopic arm for supporting and fixing a small cylinder, wherein the rear end of the long-stroke cylinder is connected to the rear end outer wall of the main cylinder arm through the rotating support mechanism, the front end of the long-stroke cylinder is connected to the middle outer wall of the main cylinder arm through the flexible fixing mechanism, and the piston rod end of the long-stroke cylinder is slidably arranged on the outer wall between the middle and front ends of the main cylinder arm through the sliding support mechanism.

[0005] The above scheme is further preferred, wherein the flexible fixing mechanism includes a supporting fixing, a lower fixing, an upper buoyancy fixing, a threaded rod and a buffer spring; the supporting fixing is fixed on the outer walls of the main cylinder arms on both sides of the front end of the long-stroke cylinder, the lower fixing is arranged horizontally between the two sides above the main cylinder arms, the two ends of the lower fixing are connected to the supporting fixing, and an upper buoyancy fixing symmetrical to the lower fixing is arranged above the lower fixing, the front end of the long-stroke cylinder is fixed in a clamping cavity formed between the lower fixing and the symmetrical upper buoyancy fixing, threaded rods are vertically penetrated at both ends of the upper buoyancy fixing and the two ends of the lower fixing, the two ends of the upper buoyancy fixing are respectively connected to the two ends of the lower fixing by the threaded rod, and the buffer spring is sleeved on the threaded rod under the lower surface of the lower fixing.

[0006] The above scheme is further preferred, in which screw through holes on the same vertical axis are respectively provided at both ends of the upper floating fixing member and both ends of the lower fixing member, the threaded rod is arranged through the screw through holes, screw holes are provided on the two end surfaces of the lower fixing member and between the screw through holes and the edge of the card cavity, and the two ends of the lower fixing member are fixedly connected to the top end of the supporting fixing member by countersunk fixing screws passing through the screw holes.

[0007] The above scheme is further preferred, in which an upper locking nut is threadedly connected to the upper end of the threaded rod, a lower washer is sleeved on the lower end of the threaded rod, a lower locking nut is threadedly connected to the lower surface of the lower washer, upper washers are arranged on the lower surfaces of both ends of the lower fixing piece, and a buffer spring is sleeved on the threaded rod between the lower washer and the upper washer.

[0008] The above scheme is further preferred that the two ends of the lower fixing member and the two ends of the upper floating fixing member respectively have a left connecting wing and a right connecting wing which are parallel and symmetrical to each other, and between the left connecting wing and the right connecting wing of the lower fixing member and between the left connecting wing and the right connecting wing of the upper floating fixing member respectively have a clamping part which is symmetrical up and down and has a semicircular groove-shaped transition, and the upper and lower symmetrical clamping parts surround a clamping cavity with each other.

[0009] The above scheme is further preferred, in which the rotation support mechanism includes a grooved support seat fixed on the outer wall at the rear end of the main cylinder arm of the telescopic arm, a rotation support shaft is transversely fixed at the front end of the grooved support seat, a first rotating sleeve is transversely arranged at the rear end of the long-stroke cylinder, the first rotating sleeve is sleeved on the rotation support shaft between the inner walls on both sides of the grooved support seat, a connecting sleeve connected to the rear end of the long-stroke cylinder is arranged on the outer wall of the first rotating sleeve, a first tensioning screw connected to the rotation support shaft is arranged on the first rotating sleeve, and a partition plate parallel to the first rotating sleeve is arranged between the inner walls on both sides of the grooved support seat on the rear side of the first rotating sleeve.

[0010] The above scheme is further preferred, in which the sliding support mechanism includes grooved guide rails fixed on both sides of the front end of the main cylinder arm of the telescopic arm and a grooved sliding seat arranged on the upper surface of the main cylinder arm, the piston rod end of the long-stroke cylinder is transmission-connected to the rear end of the grooved sliding seat, downwardly extending connecting plates are respectively arranged on the outer sides of the front and rear ends of the grooved sliding seat, a roller is arranged in the grooved guide rail, and a wheel axle connected to the lower end of the connecting plate extends outward from the center of the roller.

[0011] The above scheme is further preferred in that a cross bar shaft is laterally connected to the rear end of the groove-type sliding seat, and a second rotating sleeve is laterally fixed to the end of the piston rod of the long-stroke cylinder, the second rotating sleeve is sleeved on the cross bar shaft, and a second tightening screw connected to the cross bar shaft is provided on the second rotating sleeve.

[0012] The above solution is further preferred in that a baffle parallel to the second rotating sleeve is provided between the inner walls on both sides of the groove-shaped sliding seat in front of the second rotating sleeve.

[0013] According to another aspect of the present invention, the present invention provides a flexible fixing method for a long-stroke cylinder of a telescopic arm, comprising the following steps: comprising the step of flexibly fixing the long-stroke cylinder using the flexible fixing structure of the present invention, movably mounting the front end, middle part and rear end of the long-stroke cylinder on the outer wall of the main cylinder arm of the telescopic arm respectively, connecting the rear end of the long-stroke cylinder to the rear end outer wall of the main cylinder arm via a rotating support mechanism, connecting the front end of the long-stroke cylinder to the middle outer wall of the main cylinder arm via a flexible fixing mechanism, and slidingly connecting the piston rod end of the long-stroke cylinder to the outer wall between the middle part and the front end of the main cylinder arm via a sliding support mechanism.

[0014] To sum up, the flexible fixing device of the present invention can continuously adjust the flexible elastic force generated by the long-stroke cylinder, so that when the long-stroke cylinder is working, the flexible elastic force generated by the long-stroke cylinder can be offset by the buffer spring within a certain range, which is beneficial to the operation of the long-stroke hydraulic cylinder; to this end, the entire flexible fixing device has a good buffering effect on the radial or lateral force exerted on the long-stroke cylinder when it shakes or rotates, reduces the wear of the cylinder, avoids damage and rupture of the cylinder steel sleeve and sealing structure, and greatly improves the service life of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the installation three-dimensional structure of a flexible fixing structure of a telescopic arm long-stroke oil cylinder of the present invention;

[0016] Figure 2 It is a schematic diagram of the front view structure of the installation of a flexible fixing structure of a telescopic arm long-stroke oil cylinder of the present invention;

[0017] Figure 3It is a schematic diagram of the installation structure of the flexible fixing mechanism of the present invention;

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the flexible fixing mechanism of the present invention;

[0019] Figure 5 It is a partial structural schematic diagram of the supporting fixing member, the lower fixing member and the upper floating fixing member of the present invention;

[0020] Figure 6 is a front view structural schematic diagram of the flexible fixing mechanism of the present invention;

[0021] Figure 7 is a structural schematic diagram of the rotation support mechanism of the present invention;

[0022] Figure 8 is a schematic structural diagram of a first rotating sleeve of the present invention;

[0023] Fig. 9 is a structural schematic diagram of the sliding support mechanism of the present invention;

[0024] In the accompanying drawings, the telescopic arm 100, the main cylinder arm 1, the long stroke cylinder 2, the rotation support mechanism 3, the flexible fixing mechanism 4, the sliding support mechanism 5, the grooved support seat 10, the rotation support shaft 11, the first rotating sleeve 12, the connecting sleeve 13, the first tensioning screw 14, the partition 15, the support fixing member 40, the lower fixing member 41, the lower left connecting wing 41A, the lower right connecting wing 41B, the lower clamping part 41C, the upper buoyancy fixing member 42, the upper left connecting wing 42A, the upper right connecting Wing 42B, upper clamping portion 42C, threaded rod 43, buffer spring 44, clamping cavity 45, screw through hole 46, screw hole 47, countersunk fixing screw 47-1, buffer support pad 47-2, upper locking nut 48, upper washer 48-1, lower washer 49, lower locking nut 49-1, grooved guide rail 50, grooved sliding seat 51, connecting plate 52, roller 53, wheel axle 54, cross bar shaft 55, second rotating sleeve 56, second tightening screw 57, baffle 58. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are only for the purpose of enabling the reader to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0026] like Figure 1 and Figure 2As shown, according to a flexible fixing structure of a telescopic arm long-stroke cylinder of the present invention, the fixing structure includes a rotation support mechanism 3, a flexible fixing mechanism 4 and a sliding support mechanism 5 arranged on the outer wall of the main cylinder arm 1 of the telescopic arm 100 for supporting and fixing the long-stroke cylinder 2, wherein the rear end of the long-stroke cylinder 2 is connected to the rear end outer wall of the main cylinder arm 1 through the rotation support mechanism 3, the front end of the long-stroke cylinder 2 is connected to the middle outer wall of the main cylinder arm 1 through the flexible fixing mechanism 4, and the piston rod end of the long-stroke cylinder 2 is slidably arranged between the middle and front ends of the main cylinder arm 1 through the sliding support mechanism 5. The rear end of the long-stroke oil cylinder 2 is movably connected by rotation. When the piston rod end of the long-stroke oil cylinder 2 pulls the multi-stage auxiliary cylinder arm in the telescopic arm 100 to perform telescopic movement through the wire rope wound on the sliding support mechanism 5, the front end of the cylinder barrel of the long-stroke oil cylinder 2 passes through the flexible fixing mechanism 4 and is floatingly fixed on the outer wall of the main cylinder arm 1, so that the rear end of the long-stroke oil cylinder 2 can rotate up and down during the up and down floating process, and the front end of the long-stroke oil cylinder 2 pulls the sliding support mechanism 5 to move back and forth, thereby playing a flexible fixing role on the long-stroke oil cylinder 2 and improving the service life of the oil cylinder.

[0027] In the present invention, if Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the flexible fixing mechanism 4 includes a supporting fixing member 40, a lower fixing member 41, an upper buoyancy fixing member 42, a threaded rod 43 and a buffer spring 44; the supporting fixing member 40 is fixed on the outer wall of the main cylinder arm 1 on both sides of the front end of the long-stroke oil cylinder 2, the lower fixing member 41 is arranged across the two sides above the main cylinder arm 1, the two ends of the lower fixing member 41 are connected to the supporting fixing member 40, and an upper buoyancy fixing member 42 symmetrical to the lower fixing member 41 is arranged above the lower fixing member 41, and the front end of the long-stroke oil cylinder 2 is fixed in a card cavity 45 formed between the lower fixing member 41 and the symmetrical upper buoyancy fixing member 42, and threaded rods 43 are vertically penetrated at both ends of the upper buoyancy fixing member 42 and both ends of the lower fixing member 41, and the two ends of the upper buoyancy fixing member 42 are connected to the two ends of the lower fixing member 41 by the threaded rods 43, and the lower surface of the lower fixing member 41 is provided with a threaded rod 43. The buffer spring 44 is sleeved on the threaded rod 43 below; screw through holes 46 on the same vertical axis are respectively provided at both ends of the upper buoyant fixing member 42 and the two ends of the lower fixing member 41, and the threaded rod 43 is penetrated in the screw through hole 46, and screw holes 47 are provided on the two end surfaces of the lower fixing member 41 and between the screw through holes 46 and the edge of the clamping cavity 45, and the two ends of the lower fixing member 41 are fixedly connected to the top of the supporting fixing member 40 by countersunk fixing screws 47-1 penetrating through the screw holes 47; an upper locking nut 48 is threadedly connected to the upper end of the threaded rod 43, a lower washer 49 is sleeved on the lower end of the threaded rod 43, a lower locking nut 49-1 is threadedly connected to the lower surface of the washer 49, and an upper washer 48-1 is provided on the lower surface of both ends of the lower fixing member 41, and a buffer spring 44 is sleeved on the threaded rod 43 between the washer 49 and the upper washer 48-1;In the present invention, after the two vertical support fixing members 40 are respectively welded and fixed on the outer walls on both sides of the middle part of the main cylinder arm 1, the two ends of the lower fixing member 41 are fixedly connected to the top surface of the two support fixing members 40 by countersunk fixing screws 47-1, and an upper floating fixing member 42 is arranged above the lower fixing member 41. The lower fixing member 41 and the upper floating fixing member 42 form a flexible floating fixed support member that is symmetrical up and down, and a card cavity 45 for the front end of the long-stroke oil cylinder 2 to pass through is formed between the lower fixing member 41 and the upper floating fixing member 42. The two ends of the upper floating fixing member 42 and the two ends of the lower fixing member 41 are connected by threaded rods 43 that penetrate up and down. The upper and lower parts are vertically connected in series, and the lower fixing part 41 and the upper floating fixing part 42 are connected together by the upper locking nut 48 and the lower locking nut 49-1 on the threaded rod 43 respectively. The upper washer 48-1, the lower washer 49 and the buffer spring 44 between the upper washer 48-1 and the lower washer 49 and sleeved on the threaded rod 43 are passed below the two ends of the lower fixing part 41 to form a flexible fixing effect on the upper floating fixing part 42. When the three-section telescopic arm reciprocates linearly or swings back and forth, the front end (fixed end) of the long-stroke oil cylinder 2 is mainly loaded and pressed on the lower fixing part 41. When the long-stroke oil cylinder 2 is in the process of telescopic movement or transportation and use, When the front end (fixed end) of the long-stroke oil cylinder 2 is vibrated or swung, it will push the buoyant fixing part 42 when it is subjected to the radial or lateral force up and down, so that the buoyant fixing part 42 pulls the threaded rod 43. Under the spring force of the buffer spring 44 sleeved on the lower end of the threaded rod 43, when the long-stroke oil cylinder 2 performs flexible operation, the flexible fixing force can be continuously adjusted by the buffer spring 44. The elastic force generated by the entire flexible fixing mechanism 4 can offset the radial or lateral force on the long-stroke oil cylinder 2 within a certain range. During the offset process of the flexible fixing mechanism, the rear end of the long-stroke oil cylinder 2 also rotates or shakes up and down, and the front end of the long-stroke oil cylinder 2 pulls the sliding support mechanism 5 to move back and forth, thereby playing a buffering role for the long-stroke oil cylinder 2. The flexible fixing of the oil cylinder reduces the lateral or radial force received during operation, and the flexible fixing of the oil cylinder in the bumps increases the stability of the oil cylinder, thereby solving the damage to the oil cylinder steel sleeve and seal caused by manufacturing and assembly process errors and when used in a vibrating and bumpy environment, improving the stability of the oil cylinder and extending the service life of the oil cylinder. ;

[0028] In the present invention, Figure 5 and Figure 6As shown, both ends of the lower fixing member 41 and both ends of the upper buoyant fixing member 42 respectively have a left connecting wing and a right connecting wing which are parallel and symmetrical to each other, and between the left connecting wing and the right connecting wing of the lower fixing member 41 and between the left connecting wing and the right connecting wing of the upper buoyant fixing member 42 respectively have a clamping portion which is symmetrical up and down and has a semicircular groove-shaped transition, the left connecting wing includes a left upper connecting wing 42A and a left lower connecting wing 41A which are symmetrical up and down, and the right connecting wing includes a right upper connecting wing 42B and a right lower connecting wing 41B which are symmetrical up and down, and a clamping cavity 45 is surrounded by the clamping portions which are symmetrical up and down, and the clamping portions include an upper clamping portion 42C and a lower clamping portion 41C which are symmetrical up and down. More specifically, the lower fixing member 41 has a left lower connecting wing 41A, a right lower connecting wing 41B and a lower clamping portion 41C, The upper buoyancy fixing member 42 comprises an upper left connecting wing 42A, an upper right connecting wing 42B and an upper clamping portion 42C. The two sides of the upper clamping portion 42C are respectively connected to the upper left connecting wing 42A and the upper right connecting wing 42B in an integral manner. The two sides of the lower clamping portion 41C are respectively connected to the lower left connecting wing 41A and the lower right connecting wing 41B in an integral manner. The lower clamping portion 41C and the upper clamping portion 42C are respectively semicircular groove-shaped. The upper left connecting wing 42A and the upper right connecting wing 42B are respectively connected to the upper left connecting wing 42A and the upper right connecting wing 42B. The left lower connecting wing 41A and the right lower connecting wing 41B are connected to each other by an upper clamping portion 42C in the shape of a semicircular groove, and the left lower connecting wing 41A and the right lower connecting wing 41B are connected to each other by a lower clamping portion 41C in the shape of a semicircular groove. Screw holes 46 are respectively provided on the left lower connecting wing 41A and the left upper connecting wing 42A, and on the right lower connecting wing 41B and the right upper connecting wing 42B, and screw holes 47 are also provided on the left lower connecting wing 41A and the right lower connecting wing 41B. On the connecting wing located between the screw through hole 46 and the edge of the card cavity 45, the lower left connecting wing 41A and the lower right connecting wing 41B are respectively connected to the top of the supporting fixing member 40 on the corresponding side by countersunk fixing screws 47-1 passing through the screw holes 47, and outwardly protruding buffer support pads 47-2 are respectively arranged in the lower surface of the upper left connecting wing 42A and the lower surface of the upper right connecting wing 42B and directly above the countersunk fixing screws 47-1 to prevent the buffer support pads 47-2 arranged on the lower surface of the upper left connecting wing 42A and the lower surface of the upper right connecting wing 42B at both ends of the upper buoyant fixing member 42 from floating up and down. The buffer support pads 47-2 will touch the lower left connecting wing 41A and the lower right connecting wing 41B at both ends of the lower fixing member 41, thereby preventing the countersunk fixing screws 47-1 from being touched, thereby damaging the countersunk fixing screws 47-1 and affecting the stability of the lower fixing member 41 connected to the top of the supporting fixing member 40.The left lower connecting wing 41A and the left upper connecting wing 42A as well as the right lower connecting wing 41B and the right upper connecting wing 42B are connected together by a threaded rod 43 penetrating through the screw rod through hole 46. The threaded rod 43 above the left lower connecting wing 41A and the left upper connecting wing 42A is fixed by an upper locking nut 48. The threaded rod 43 below the left lower connecting wing 41A and the right lower connecting wing 41B is sleeved with a buffer spring 44. An upper washer 48-1 and a lower washer 49 are respectively provided at the upper and lower ends of the buffer spring 44. The lower end of the threaded rod 43 limits the buffer spring 44 to the lower washer 49 through a lower locking nut 49-1. The long stroke oil cylinder 2 When the front end is fastened to the card cavity 45 and vibrates or swings, the buoyant fixing part 42 is pulled to float up and down. At this time, the buoyant fixing part 42 will drive the threaded rod 43 to float up and down and pull the buffer spring 44 on the movable threaded rod 43. The flexible elastic force generated by the long-stroke cylinder 2 is continuously adjusted by the buffer spring 44. When the long-stroke cylinder 2 is operating, the flexible elastic force generated by the long-stroke cylinder 2 can be offset by the buffer spring within a certain range. For this reason, the entire flexible fixing mechanism 4 has a good buffering effect on the radial or lateral force exerted on the long-stroke cylinder 2 when it is shaking or rotating.

[0029] In the present invention, if Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, the rotation support mechanism 3 includes a grooved support seat 10 fixed on the outer wall of the rear end of the main cylinder arm 1 of the telescopic arm 100, a rotation support shaft 11 is transversely fixed at the front end of the grooved support seat 10, a first rotation sleeve 12 is transversely arranged at the rear end of the long-stroke oil cylinder 2, the first rotation sleeve 12 is sleeved on the rotation support shaft 11 between the inner walls on both sides of the grooved support seat 10, a connecting sleeve 13 connected to the rear end of the long-stroke oil cylinder 2 is arranged on the outer wall of the first rotation sleeve 12, a first loosening screw 14 connected to the rotation support shaft 1 is arranged on the first rotation sleeve 12, and the grooved support seat 10 at the rear side of the first rotation sleeve 12 is provided with a first loosening screw 14 connected to the rotation support shaft 1 A partition 15 parallel to the first rotating sleeve 12 is arranged between the inner walls on both sides to prevent the rear end of the long-stroke cylinder 2 from affecting each other when it moves and when the wire rope wrapped around the rear end of the grooved support seat 10 is stretched; when the long-stroke cylinder 2 is subjected to radial or lateral force during shaking or rotation, the rear end of the long-stroke cylinder 2 also vibrates accordingly. At this time, the rear end of the long-stroke cylinder 2 rotates along with the first rotating sleeve 12 on the rotating support shaft 11, thereby preventing the rear end of the long-stroke cylinder 2 from being damaged due to the fastening connection, affecting the wire rope arranged at the rear end wrapped around the grooved support seat 10 to pull the slave arm in the main arm 1 to perform telescopic work.

[0030] In the present invention, if Figure 1 , Figure 2 and Fig. 9 As shown, the sliding support mechanism 5 includes a grooved guide rail 50 fixed on both sides of the front end of the main cylinder arm 1 of the telescopic arm 100 and a grooved sliding seat 51 arranged on the upper surface of the main cylinder arm 1. The piston rod end of the long-stroke oil cylinder 2 is transmission-connected to the rear end of the grooved sliding seat 51. The outer sides of the front and rear ends of the grooved sliding seat 51 are respectively provided with connecting plates 52 extending downwards. A roller 53 is arranged in the grooved guide rail 50. A wheel axle 54 connected to the lower end of the connecting plate 52 extends outward from the center of the roller 53; a cross bar shaft 55 is transversely connected to the rear end of the grooved sliding seat 51, and a second rotating sleeve 56 is transversely fixed to the piston rod end of the long-stroke oil cylinder 2. The second rotating sleeve 56 is sleeved on the cross bar shaft 55, and a second loosening screw 57 connected to the cross bar shaft 55 is arranged on the second rotating sleeve 56; when the long-stroke oil cylinder 2 is subjected to radial or lateral force during shaking or rotation, the front end of the long-stroke oil cylinder 2 drives the piston rod The end portion also vibrates accordingly. Since the piston rod end and the grooved sliding seat 51 move in a relative rotation manner on the cross bar shaft 55 through the second rotating sleeve 56, the piston rod end of the long-stroke oil cylinder 2 will not generate excessive pushing and pulling forces with the grooved sliding seat 51, thereby preventing the piston rod of the long-stroke oil cylinder 2 from breaking compared to the rigid connection mode; a baffle 58 parallel to the second rotating sleeve 56 is arranged between the inner walls on both sides of the grooved sliding seat 51 in front of the second rotating sleeve 56, and the steel wire rope wound around the front end of the grooved sliding seat 51 is isolated and blocked to prevent the piston rod end of the long-stroke oil cylinder 2 from being affected by the steel wire rope during the telescopic movement, so that the long-stroke oil cylinder 2 is well connected to the sliding support mechanism 5, and the grooved sliding seat 51 is pushed to slide along the grooved guide rail 50 through the roller 53, so that the steel wire rope arranged at the front end of the grooved sliding seat 51 pulls the slave cylinder arm in the main cylinder arm 1 to quickly perform telescopic work.

[0031] In the present invention, in the present invention, as Figures 1 to 8As shown, the flexible fixing structure of the telescopic arm long-stroke oil cylinder of the present invention is used to flexibly fix the stroke oil cylinder 2, which mainly includes the following steps: the front end, the middle part and the rear end of the long-stroke oil cylinder 2 are movably installed on the outer wall of the main cylinder arm 1 of the telescopic arm 100 respectively, and the rear end of the long-stroke oil cylinder 2 is connected to the rear end outer wall of the main cylinder arm 1 through a rotating support mechanism 3, the front end of the long-stroke oil cylinder 2 is flexibly connected to the middle outer wall of the main cylinder arm 1 through a flexible fixing mechanism 4, and the piston rod end of the long-stroke oil cylinder 2 is slidably connected to the outer wall between the middle and front ends of the main cylinder arm 1 through a sliding support mechanism 5, and the flexible fixing mechanism 4 is flexibly connected The middle outer wall of the main cylinder arm 1 includes the following steps: first, a pair of supporting fixings 40 are fixed on the outer wall of the main cylinder arm 1 on both sides of the front end of the long-stroke oil cylinder 2, and two vertical supporting fixings 40 are respectively welded and fixed on the outer walls on both sides of the middle of the main cylinder arm 1, and a lower fixing member 41 is arranged across the top ends of the pair of supporting fixings 40, so that the two ends of the lower fixing member 41 are fixedly connected between the top ends of the pair of supporting fixings 40, and a floating fixing member 42 symmetrical to the lower fixing member 41 is arranged above the lower fixing member 41, and a card cavity 45 for sleeve-fitting and fixing the front end of the long-stroke oil cylinder 2 is arranged between the floating fixing member 42 and the lower fixing member 41, and the long-stroke oil cylinder 2 is fixed to the upper end of the long-stroke oil cylinder 2. The front end of the oil cylinder 2 is fixed in a clamping cavity 45 formed between the lower fixing member 41 and the symmetrical upper floating fixing member 42. Threaded rods 43 are vertically penetrated at both ends of the upper floating fixing member 42 and the lower fixing member 41 respectively. The two ends of the upper floating fixing member 42 and the two ends of the lower fixing member 41 are connected by threaded rods 43 respectively. A buffer spring 44 is sleeved on the threaded rod 43 under the lower surface of the lower fixing member 41. Screw through holes 46 on the same vertical axis are respectively provided at both ends of the upper floating fixing member 42 and the two ends of the lower fixing member 41. The threaded rod 43 is penetrated in the screw through hole 46. The two ends of the lower fixing member 41 are located on the surface of both ends of the lower fixing member 41 and located at the bottom of the threaded rod 43. At least one screw hole 47 is set between the screw through hole 46 and the edge of the card cavity 45. Countersunk fixing screws 47-1 that can pass through the screw holes 47 are used at both ends of the lower fixing piece 41 to fix the lower fixing piece 41 to the top of the supporting fixing piece 40; an upper locking nut 48 is threadedly connected to the upper end of the threaded rod 43, a lower washer 49 is sleeved on the lower end of the threaded rod 43, and a lower locking nut 49-1 is used to fasten the lower end of the threaded rod 43 on the lower surface of the lower washer 49, upper washers 48-1 are set on the lower surfaces of both ends of the lower fixing piece 41, and a buffer spring 44 is sleeved on the threaded rod 43 between the lower washer 49 and the upper washer 48-1.To this end, a flexible buffer device is formed below the two ends of the lower fixing member 41 through the upper washer 48-1, the lower washer 49 and the buffer spring 44 between the upper washer 48-1 and the lower washer 49 and sleeved on the threaded rod 43, which forms a flexible fixing effect on the upper floating fixing member 42. When the three-section telescopic arm reciprocates linearly or swings back and forth, the front end (fixed end) of the long-stroke cylinder 2 is mainly pressed against the lower fixing member 41. When the long-stroke cylinder 2 is telescopic or in the process of transportation and use, When the front end (fixed end) of the long-stroke cylinder 2 is vibrated or swung, it will push the buoyant fixing part 42 when it is subjected to the radial or lateral force up and down, so that the buoyant fixing part 42 pulls the threaded rod 43. Under the spring force of the buffer spring 44 sleeved on the lower end of the threaded rod 43, when the long-stroke cylinder 2 performs flexible operation, the flexible fixing force can be continuously adjusted by the buffer spring 44. The elastic force generated by the entire flexible fixing mechanism 4 can offset the radial or lateral force exerted on the long-stroke cylinder 2 within a certain range. When subjected to radial or lateral force and during the offset process of the flexible fixing mechanism, the long The rear end of the stroke cylinder 2 also rotates or shakes up and down. At this time, the rear end of the long-stroke cylinder 2 also rotates on the rotating support mechanism 3, thereby preventing the rear end of the long-stroke cylinder 2 from being damaged due to the tight connection; the front end of the long-stroke cylinder 2 pulls the sliding support mechanism 5 to move back and forth, thereby buffering the long-stroke cylinder 2, or the telescopic arm flexibly fixes the cylinder during bumps to increase the stability of the cylinder, thereby solving the damage to the cylinder steel sleeve and seal caused by manufacturing and assembly process errors and when used in a vibrating and bumpy environment, improving the stability of the cylinder, and extending the service life of the cylinder.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A flexible fixing structure of a telescopic arm long-stroke cylinder, characterized in that: The fixing structure comprises a rotating support mechanism (3), a flexible fixing mechanism (4) and a sliding support mechanism (5) arranged on the outer wall of the main cylinder arm (1) of the telescopic arm (100) for supporting and fixing a small part, wherein the rear end of the long-stroke oil cylinder (2) is connected to the rear end outer wall of the main cylinder arm (1) through the rotating support mechanism (3), the front end of the long-stroke oil cylinder (2) is connected to the middle outer wall of the main cylinder arm (1) through the flexible fixing mechanism (4), and the piston rod end of the long-stroke oil cylinder (2) is slidably arranged on the outer wall between the middle and front ends of the main cylinder arm (1) through the sliding support mechanism (5); The rotation support mechanism (3) comprises a groove-shaped support seat (10) fixed on the outer wall of the rear end of the main cylinder arm (1) of the telescopic arm (100); a rotation support shaft (11) is transversely fixed at the front end of the groove-shaped support seat (10); a first rotation sleeve (12) is transversely arranged at the rear end of the long-stroke oil cylinder (2); the first rotation sleeve (12) is sleeved on the rotation support shaft (11) between the inner walls on both sides of the groove-shaped support seat (10); a connecting sleeve (13) connected to the rear end of the long-stroke oil cylinder (2) is arranged on the outer wall of the first rotation sleeve (12); a first tension screw (14) connected to the rotation support shaft (11) is arranged on the first rotation sleeve (12); and a partition plate (15) parallel to the first rotation sleeve (12) is arranged between the inner walls on both sides of the groove-shaped support seat (10) at the rear side of the first rotation sleeve (12); The flexible fixing mechanism (4) comprises a supporting fixing member (40), a lower fixing member (41), an upward buoyant fixing member (42), a threaded rod (43) and a buffer spring (44); the supporting fixing member (40) is fixed on the outer wall of the main barrel arm (1) on both sides of the front end of the long-stroke oil cylinder (2); the lower fixing member (41) is arranged across the two sides above the main barrel arm (1); the two ends of the lower fixing member (41) are connected to the supporting fixing member (40); an upward buoyant fixing member (42) symmetrical to the lower fixing member (41) is arranged above the lower fixing member (41); the front end of the long-stroke oil cylinder (2) is fixed in a clamping cavity (45) formed between the lower fixing member (41) and the symmetrical upward buoyant fixing member (42); the two ends of the upward buoyant fixing member (42) and the two ends of the lower fixing member (41) are respectively A threaded rod (43) is vertically penetrated separately, and the two ends of the upper floating fixing member (42) are connected to the two ends of the lower fixing member (41) respectively through the threaded rod (43), and the buffer spring (44) is sleeved on the threaded rod (43) below the lower surface of the lower fixing member (41); screw through holes (46) on the same vertical axis are respectively provided at the two ends of the upper floating fixing member (42) and the two ends of the lower fixing member (41), and the threaded rod (43) is penetrated in the screw through hole (46), and screw holes (47) are provided on the two end surfaces of the lower fixing member (41) and between the screw through hole (46) and the edge of the clamping cavity (45), and the two ends of the lower fixing member (41) are fixedly connected to the top of the supporting fixing member (40) by countersunk fixing screws (47-1) penetrating the screw holes (47).

2. The flexible fixing structure of the telescopic arm long-stroke cylinder according to claim 1, characterized in that: An upper locking nut (48) is threadedly connected to the upper end of the threaded rod (43), a lower washer (49) is sleeved on the lower end of the threaded rod (43), a lower locking nut (49-1) is threadedly connected to the lower surface of the lower washer (49), upper washers (48-1) are arranged on the lower surfaces of both ends of the lower fixing member (41), and a buffer spring (44) is sleeved on the threaded rod (43) between the lower washer (49) and the upper washer (48-1).

3. A flexible fixing structure of a telescopic arm long-stroke cylinder according to any one of claims 1-2, characterized in that: The two ends of the lower fixing member (41) and the two ends of the upper floating fixing member (42) respectively have a left connecting wing and a right connecting wing that are parallel and symmetrical to each other, and between the left connecting wing and the right connecting wing of the lower fixing member (41) and between the left connecting wing and the right connecting wing of the upper floating fixing member (42) there are respectively upper and lower symmetrical and semicircular groove-shaped transition clamping parts, and the upper and lower symmetrical clamping parts mutually surround a clamping cavity (45).

4. The flexible fixing structure of the telescopic arm long-stroke cylinder according to claim 1, characterized in that: The sliding support mechanism (5) comprises grooved guide rails (50) fixed on both sides of the front end of the main barrel arm (1) of the telescopic arm (100) and a grooved sliding seat (51) arranged on the upper surface of the main barrel arm (1); the piston rod end of the long-stroke oil cylinder (2) is drivingly connected to the rear end of the grooved sliding seat (51); downwardly extending connecting plates (52) are respectively arranged on the outer sides of the front and rear ends of the grooved sliding seat (51); a roller (53) is arranged in the grooved guide rail (50); and a wheel shaft (54) connected to the lower end of the connecting plate (52) extends outward from the center of the roller (53).

5. The flexible fixing structure of the telescopic arm long-stroke oil cylinder according to claim 1, characterized in that: A crossbar shaft (55) is transversely connected to the rear end of the groove-shaped sliding seat (51), and a second rotating sleeve (56) is transversely fixed to the end of the piston rod of the long-stroke oil cylinder (2). The second rotating sleeve (56) is sleeved on the crossbar shaft (55), and a second loosening screw (57) connected to the crossbar shaft (55) is arranged on the second rotating sleeve (56).

6. The flexible fixing structure of the telescopic arm long-stroke oil cylinder according to claim 1, characterized in that: A baffle (58) parallel to the second rotating sleeve (56) is arranged between the inner walls on both sides of the groove-shaped sliding seat (51) in front of the second rotating sleeve (56).

7. A flexible fixing method for a telescopic arm long-stroke cylinder, characterized in that: A method for flexibly fixing a long-stroke cylinder (2) by using the flexible fixing structure described in any one of claims 1 to 6, comprising the following steps: the front end, the middle part and the rear end of the long-stroke cylinder (2) are movably mounted on the outer wall of the main cylinder arm (1) of the telescopic arm (100), the rear end of the long-stroke cylinder (2) is connected to the rear end outer wall of the main cylinder arm (1) through a rotating support mechanism (3), the front end of the long-stroke cylinder (2) is flexibly connected to the middle outer wall of the main cylinder arm (1) through a flexible fixing mechanism (4), and the piston rod end of the long-stroke cylinder (2) is slidably connected to the outer wall between the middle and front ends of the main cylinder arm (1) through a sliding support mechanism (5).

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