Locking tool for machining rudder spindle

Abstract

The invention relates to the technical field of rudder spindle machining, in particular to a locking tool for rudder spindle machining, which comprises a concave tool base, guide grooves are symmetrically formed in the left and right side walls of an inner cavity of the concave tool base front and back, and lifting frames are symmetrically mounted in the inner cavity of the concave tool base front and back; and lifting hydraulic oil cylinders are fixedly mounted at the lower ends of the two lifting frames correspondingly, the lifting hydraulic oil cylinders are fixedly mounted at the bottom of an inner cavity of the concave tool base, and through grooves are formed in the upper ends of the two lifting frames in a left-right symmetrical and downwards-sunken mode correspondingly. The rudder spindle body is firstly placed between the two clamping mechanisms, the rudder spindle body is supported through the lower limiting cylinder at the upper end of the lower supporting seat, the driving mechanism drives the upper ends of the two clamping mechanisms to get close to each other, and the two L-shaped seats drive the two upper limiting cylinders to get close to the rudder spindle body until the two L-shaped seats make contact with the rudder spindle body.

Description

Technical Field

[0001] The invention relates to the technical field of ship rudder main shaft processing, in particular to a locking tool for ship rudder main shaft processing. Background Art

[0002] The rudder is used to steer and control the course of a ship. It is usually located at the stern of the ship and is also called the stern rudder. It is a major invention in Chinese shipbuilding technology. The rudder main shaft is needed in the process of manipulating and using the rudder. The main function of the rudder shaft is to support and fix the rudder blade so that it can rotate around the axis, thereby realizing the steering operation of the ship.

[0003] The rudder shaft refers to a fixed shaft that replaces the rudder post and is used for the rudder blade to rotate on it. The rudder main shaft needs to be clamped during the processing, so as to clamp the rudder main shaft. The existing rudder main shaft locking tooling has certain defects during use. Some locking tools can only perform a single locking when locking the rudder main shaft, so that the rudder main shaft cannot be rotated. However, when it is necessary to rotate, it is necessary to replace the tooling or first loosen the locking tooling on the rudder main shaft before adjusting the rotation. At this time, due to the lack of tooling restrictions, it is difficult to control the rotation of the rudder main shaft, which is dangerous. Some tools can clamp the rudder main shaft, and the rudder main shaft can rotate freely during the clamping process, but it cannot lock the rudder main shaft. Especially when it is necessary to perform grooving and other processing on the rudder main shaft, it will cause the rudder main shaft to shake. At this time, it is still necessary to replace the tooling to lock the rudder main shaft. The process of replacing the tooling is time-consuming and labor-intensive, which greatly reduces the work efficiency and is not conducive to actual use. Summary of the invention

[0004] The object of the present invention is to provide a locking tool for processing a rudder main shaft to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a locking tool for processing a rudder spindle, comprising a concave tool base, the left and right side walls of the inner cavity of the concave tool base are both symmetrically provided with guide grooves, the inner cavity of the concave tool base is symmetrically installed with a lifting frame, the lower ends of the two lifting frames are fixedly installed with a lifting hydraulic oil cylinder, the lifting hydraulic oil cylinder is fixedly installed at the bottom of the inner cavity of the concave tool base, the upper ends of the two lifting frames are both symmetrically recessed downwards and provided with through grooves, the upper ends of the lifting frames are fixedly connected with a lower support seat between the two through grooves, the upper end of the lower support seat is symmetrically rotatably installed with a lower limit cylinder, a rudder spindle body is arranged above the lower support seat, a clamping mechanism for locking the rudder spindle body is symmetrically installed on the lifting frame, an upper limit cylinder is rotatably installed on the two clamping mechanisms, locking mechanisms are installed at both ends of the two lower limit cylinders and the two upper limit cylinders, and a plurality of locking mechanisms are respectively installed on the sides of the lower support seat and the clamping mechanism; The upper end of the lifting frame is symmetrically and fixedly connected with an L-shaped support plate, and locking mechanisms are installed on the two L-shaped support plates.

[0006] Preferably, the side surface of the lifting frame is in vertical sliding contact with the inner side wall of the concave tooling base, and guide plates are symmetrically fixedly connected to the left and right sides of the lifting frame, and the guide plates are vertically slidably connected to the guide grooves.

[0007] Preferably, the clamping mechanism includes a bending arm which is rotatably installed in the through groove at the upper end of the lifting frame through a circular shaft, the lower end of the bending arm is rotatably installed with a rotating arm through a circular shaft, the lower ends of the two rotating arms are installed with driving mechanisms, the upper ends of the bending arms are fixedly connected with L-shaped seats, the lower ends of the two L-shaped seats in the two clamping mechanisms are close to each other and have rotating grooves, the upper limit cylinder is installed in the rotating groove, the upper end of the lower support seat is symmetrically provided with rotating grooves, the lower limit cylinder is installed in the rotating groove, both ends of the upper limit cylinder and the lower limit cylinder are fixedly connected with rotating shafts, one end of the rotating shaft is fixedly connected with a rotating crown gear, and the locking mechanism is arranged on the side of the rotating crown gear.

[0008] Preferably, the upper limit cylinder is rotatably connected to the rotating groove of the L-shaped seat via a rotating shaft, and the rotating shafts at both ends of the upper limit cylinder both penetrate the L-shaped seat and extend to the outside, and the lower limit cylinder is rotatably connected to the rotating groove of the lower support seat via a rotating shaft, and the rotating shafts at both ends of the lower limit cylinder both penetrate the lower support seat and extend to the outside.

[0009] Preferably, the driving mechanism includes a first clamping hydraulic cylinder fixedly installed at the lower end of the lifting frame, the upper end of the piston rod of the first clamping hydraulic cylinder extends upward to the inner cavity of the lifting frame, the upper end of the piston rod of the first clamping hydraulic cylinder is fixedly connected to a lifting plate, the lower end of the lifting plate is symmetrically fixedly connected to a vertical plate, the lower end of the vertical plate downwardly penetrates the bottom of the lifting frame, and the two ends of the lifting plate are respectively connected to the lower ends of the two rotating arms through circular shafts.

[0010] Preferably, grooves are symmetrically provided at the left and right ends of the lifting plate, the lower end of the rotating arm is installed in the groove, and the rotating arm is rotatably connected to the groove through a circular shaft, and the vertical plate is slidably connected to the bottom of the lifting frame.

[0011] Preferably, the locking mechanism includes a movable plate arranged on the side of the rotating crown gear, two light rods are inserted through the side of the movable plate, the movable plate is slidably connected to the light rods, one end of the two light rods are fixedly sleeved with a limiting ring, one end of the two light rods away from the limiting ring are sleeved with a return spring, the side of the movable plate close to the rotating crown gear is fixedly connected with a locking crown gear, and the locking crown gear is clamped with the rotating crown gear.

[0012] Preferably, the locking mechanism includes a second clamping hydraulic cylinder fixedly mounted on the outer side surface of the L-shaped support plate, one end of the piston rod of the second clamping hydraulic cylinder passes through the side wall of the L-shaped support plate and is fixedly connected to the concave plate, a side of the concave plate close to the inner side wall of the L-shaped support plate is symmetrically fixedly connected with a cross plate front and back, the upper and lower sides of the concave plate are symmetrically fixedly connected with L-shaped extrusion plates front and back, the ends of the concave plate are fixedly connected with extrusion seats, an anti-skid pad is fixedly mounted on the side of the extrusion seat away from the concave plate, and the anti-skid pad abuts against the cylindrical surface of the rudder main shaft body.

[0013] Preferably, the side surface of the L-shaped support plate is symmetrically provided with sliding grooves, the cross plate is slidably connected to the sliding grooves left and right, one end of the L-shaped extrusion plate is sloped, and the L-shaped extrusion plate is in extrusion contact with the movable plate in the locking mechanism.

[0014] Compared with the prior art, the invention has the following advantages: 1. When the rudder main shaft body needs to be clamped, the rudder main shaft body is first placed between the two clamping mechanisms, and the rudder main shaft body is supported by the lower limit cylinder at the upper end of the lower support seat, and the upper ends of the two clamping mechanisms are driven to approach each other by the driving mechanism, so that the two L-shaped seats drive the two upper limit cylinders to approach the rudder main shaft body until they are in contact with the rudder main shaft body, and the rudder main shaft body is clamped by the two lower limit cylinders and the two upper limit cylinders. At this time, only the position of the rudder main shaft body is restricted, and the rudder main shaft body can be rotated, so that the rudder main shaft body can be polished, ground and processed.

[0015] 2. When the rudder main shaft body needs to be locked so that the rudder main shaft body cannot move and rotate, the extrusion seats in the two locking mechanisms drive the anti-skid pads to cling to the sides of the rudder main shaft body, thereby clamping and fixing the rudder main shaft body to prevent the rudder main shaft body from rotating.

[0016] 3. The movable plate is squeezed by the L-shaped squeezing plate in the locking mechanism to slide inward along the polished rod. The movable plate drives the locking crown gear to engage with the rotating crown gear, thereby locking the rotating crown gear. After the rotating crown gear is locked, the rotating shaft cannot rotate. At the same time, the lower limit cylinder and the upper limit cylinder cannot rotate either, thereby further preventing the rotation of the rudder main shaft body and ensuring the stability of the rudder main shaft body.

[0017] 4. The rudder main shaft body can be firmly clamped and locked by cooperating with the provided clamping mechanism, the lower limit cylinder, the upper limit cylinder, the locking mechanism and the locking mechanism, so that the rudder main shaft body cannot move and rotate, thereby accurately performing processing operations such as grooving on the rudder main shaft body; the locking tooling of the present invention can perform two locking methods on the rudder main shaft body as needed, so that the rudder main shaft body can be processed in a variety of ways. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the locking tool structure for processing the rudder main shaft of the present invention; Figure 2 It is a side sectional view of the locking tool structure for processing the rudder main shaft of the present invention; Figure 3 It is a partial schematic diagram of the locking tool structure for processing the rudder main shaft of the present invention; Figure 4 for Figure 3 A schematic diagram of the structure enlargement in the middle; Figure 5 It is an exploded view of the lifting frame, clamping mechanism, driving mechanism and locking mechanism of the present invention; Figure 6 An exploded view of the lower support seat, locking mechanism and L-shaped extrusion plate structure of the present invention; Figure 7 It is a schematic diagram of the open structure of the clamping mechanism of the present invention.

[0019] In the figure: 1. concave tooling base; 11. guide groove; 2. lifting frame; 21. through groove; 22. lifting hydraulic cylinder; 23. guide plate; 24. L-shaped support plate; 3. lower support seat; 31. lower limit cylinder; 4. bending arm; 41. rotating arm; 42. L-shaped seat; 43. upper limit cylinder; 44. rotating shaft; 45. rotating crown gear; 5. first clamping hydraulic cylinder; 51. lifting plate; 52. vertical plate; 6. movable plate; 61. light rod; 62. limit ring; 63. reset spring; 64. locking crown gear; 7. second clamping hydraulic cylinder; 71. concave plate; 72. horizontal plate; 73. extrusion seat; 74. anti-skid pad; 75. L-shaped extrusion plate; 8. rudder main shaft body. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figures 1 to 7The present invention provides a technical solution: a locking tool for processing a rudder spindle, comprising a concave tool base 1, the left and right side walls of the inner cavity of the concave tool base 1 are both symmetrically provided with guide grooves 11, the inner cavity of the concave tool base 1 is symmetrically provided with lifting frames 2, the lower ends of the two lifting frames 2 are both fixedly provided with lifting hydraulic cylinders 22, the lifting hydraulic cylinders 22 are fixedly provided at the bottom of the inner cavity of the concave tool base 1, the upper ends of the two lifting frames 2 are both symmetrically recessed downwards and provided with through grooves 21, the upper ends of the lifting frames 2 are in the two through grooves 21 A lower support seat 3 is fixedly connected therebetween, a lower limit cylinder 31 is rotatably mounted on the upper end of the lower support seat 3, the top of the lower support seat 3 is a concave curved surface, a rudder main shaft body 8 is arranged above the lower support seat 3, a clamping mechanism for locking the rudder main shaft body 8 is symmetrically mounted on the lifting frame 2, upper limit cylinders 43 are rotatably mounted on the two clamping mechanisms, locking mechanisms are mounted on both ends of the two lower limit cylinders 31 and the two upper limit cylinders 43, and a plurality of locking mechanisms are respectively mounted on the sides of the lower support seat 3 and the clamping mechanism; After the clamping mechanism clamps the rudder main shaft body 8, the locking mechanisms at both ends of the lower limit cylinder 31 and the locking mechanisms at both ends of the upper limit cylinder 43 are symmetrically distributed up and down; The two lower limit cylinders 31 are symmetrically distributed below the rudder main shaft body 8, and the two upper limit cylinders 43 are symmetrically distributed above the rudder main shaft body 8. The rudder main shaft body 8 is clamped and limited by the cooperation of the two lower limit cylinders 31 and the two upper limit cylinders 43.

[0022] The upper end of the lifting frame 2 is symmetrically fixedly connected with an L-shaped support plate 24, and locking mechanisms are installed on the two L-shaped support plates 24. The two locking mechanisms are symmetrically distributed.

[0023] The side surface of the lifting frame 2 is in sliding contact with the inner side wall of the concave tooling base 1 , and the left and right sides of the lifting frame 2 are symmetrically fixedly connected with guide plates 23 , which are slidably connected with the guide grooves 11 .

[0024] The lifting frame 2 is driven to move up and down by the extension and retraction of the inner rod of the lifting hydraulic cylinder 22 , and the lifting frame 2 drives the guide plate 23 to slide up and down along the guide groove 11 , so that the lifting frame 2 can move up and down stably.

[0025] See also Figure 2 , Figure 5 and Figure 7The clamping mechanism includes a bending arm 4 in the through slot 21 at the upper end of the lifting frame 2 which is rotatably installed by a circular shaft, and a rotating arm 41 is rotatably installed at the lower end of the bending arm 4 through a circular shaft, and a driving mechanism is installed at the lower end of the two rotating arms 41, and a concave connecting groove is opened at the lower end of the bending arm 4, and the upper end of the rotating arm 41 is rotatably connected to the concave connecting groove by a circular shaft, and the upper end of the bending arm 4 is fixedly connected to an L-shaped seat 42, and a rotating groove is opened at the lower end of the two L-shaped seats 42 close to each other in the two clamping mechanisms, and the upper limit cylinder 43 is installed in the rotating groove, and the upper end of the lower support seat 3 is symmetrically provided with a rotating groove, and the lower limit cylinder 31 is installed in the rotating groove, and both ends of the upper limit cylinder 43 and the lower limit cylinder 31 are fixedly connected with a rotating shaft 44, and one end of the rotating shaft 44 is fixedly connected with a rotating crown gear 45, and a locking mechanism is arranged on the side of the rotating crown gear 45.

[0026] The upper limit cylinder 43 is rotatably connected to the rotating groove of the L-shaped seat 42 through the rotating shaft 44, and the rotating shafts 44 at both ends of the upper limit cylinder 43 both penetrate the L-shaped seat 42 and extend to the outside, and the lower limit cylinder 31 is rotatably connected to the rotating groove of the lower support seat 3 through the rotating shaft 44, and the rotating shafts 44 at both ends of the lower limit cylinder 31 both penetrate the lower support seat 3 and extend to the outside.

[0027] The two rotating crown gears 45 at both ends of the lower limit cylinder 31 are arranged on the front and rear sides of the lower support seat 3 , and the two rotating crown gears 45 at both ends of the upper limit cylinder 43 are arranged on the front and rear sides of the L-shaped seat 42 .

[0028] See also Figure 2 , Figure 3 , Figure 5 and Figure 7 The driving mechanism includes a first clamping hydraulic cylinder 5 fixedly installed at the lower end of the lifting frame 2, the upper end of the piston rod of the first clamping hydraulic cylinder 5 extends upward to the inner cavity of the lifting frame 2, the upper end of the piston rod of the first clamping hydraulic cylinder 5 is fixedly connected to a lifting plate 51, the lower end of the lifting plate 51 is symmetrically fixedly connected to a vertical plate 52, the lower end of the vertical plate 52 penetrates downwardly through the bottom of the lifting frame 2, and the two ends of the lifting plate 51 are respectively connected to the lower ends of the two rotating arms 41 through circular shafts.

[0029] The left and right ends of the lifting plate 51 are symmetrically provided with grooves, the lower end of the rotating arm 41 is installed in the groove, and the rotating arm 41 is rotatably connected to the groove through a circular shaft, and the vertical plate 52 is slidably connected to the bottom of the lifting frame 2 up and down.

[0030] The piston rod of the first clamping hydraulic cylinder 5 is extended and retracted up and down to drive the lifting plate 51 to move up and down, and the lifting plate 51 drives the vertical plate 52 to move up and down along the bottom of the lifting frame 2, so that the lifting plate 51 can move up and down stably.

[0031] When the lifting plate 51 moves downward, the lifting plate 51 pulls the rotating arm 41 to move downward, and at this time the rotating arm 41 rotates, and at the same time the rotating arm 41 drives the bending arm 4 to rotate along the through slot 21, and the lower end of the bending arm 4 rotates downward, and at the same time the upper end of the bending arm 4 drives the L-shaped seat 42 to rotate downward, so that the L-shaped seat 42 drives the upper limit cylinder 43 away from the rudder main shaft body 8, so that the upper limit cylinder 43 releases the clamping of the rudder main shaft body 8, and at this time the rudder main shaft body 8 can be moved upward from between the two clamping mechanisms. If the rudder main shaft body 8 is not installed between the two clamping mechanisms, the rudder main shaft body 8 can be placed between the two clamping mechanisms at this time, so that the rudder main shaft body 8 is above the two lower limit cylinders 31 on the lower support seat 3; When the lifting plate 51 moves upward, the lifting plate 51 pushes the rotating arm 41 to move upward. At this time, the rotating arm 41 moves upward, and the rotating arm 41 pushes the bending arm 4 to rotate along the through slot 21, so that the lower end of the bending arm 4 rotates upward. At the same time, the upper end of the bending arm 4 drives the L-shaped seat 42 to rotate upward, so that the L-shaped seat 42 moves close to the rudder main shaft body 8, and the L-shaped seat 42 drives the upper limit cylinder 43 to approach the rudder main shaft body 8 until it contacts with the rudder main shaft body 8, and the rudder main shaft body 8 is clamped by the upper limit cylinder 43.

[0032] After the two lower limit cylinders 31 and the two upper limit cylinders 43 clamp the rudder main shaft body 8, only the position of the rudder main shaft body 8 is restricted, and the rudder main shaft body 8 can rotate. When the rudder main shaft body 8 rotates, the two lower limit cylinders 31 and the two upper limit cylinders 43 will be driven to rotate synchronously. At this time, the lower limit cylinder 31 rotates along the lower support seat 3 through the rotating shaft 44, and the upper limit cylinder 43 rotates along the L-shaped seat 42 through the rotating shaft 44.

[0033] During operation, the concave tooling base 1 can be installed on a processing machine tool as needed. When the rudder main shaft body 8 needs to be rotated, one end of the rudder main shaft body 8 needs to be clamped and fixed by the claws of the chuck, and then the rudder main shaft body 8 is clamped by the clamping mechanism, and the rudder main shaft body 8 is driven to rotate and process by the chuck on the machine tool.

[0034] See also Figure 3 , Figure 4 and Figure 6The locking mechanism includes a movable plate 6 arranged on the side of the rotating crown gear 45, and two light rods 61 are inserted through the side of the movable plate 6. The movable plate 6 is slidably connected to the light rod 61, and one end of the two light rods 61 is fixedly sleeved with a limiting ring 62, and one end of the two light rods 61 away from the limiting ring 62 is sleeved with a return spring 63. A locking crown gear 64 is fixedly connected to the side of the movable plate 6 close to the rotating crown gear 45, and the locking crown gear 64 is snap-fitted with the rotating crown gear 45. The locking crown gear 64 has the same structure as the rotating crown gear 45 and is symmetrically distributed front to back. The rotating crown gear 45 is a plane of an annular block with a plurality of teeth in an annular array, and the teeth are integrally formed with the annular block.

[0035] One end of the light rod 61 in the locking mechanism distributed on the side of the lower support seat 3 is fixedly connected to the side of the lower support seat 3, and the two ends of the return spring 63 in the locking mechanism distributed on the side of the lower support seat 3 are respectively abutted against the lower support seat 3 and the movable plate 6; one end of the light rod 61 in the locking mechanism distributed on the side of the L-shaped seat 42 is fixedly connected to the side of the L-shaped seat 42, and the two ends of the return spring 63 in the locking mechanism distributed on the side of the L-shaped seat 42 are respectively abutted against the L-shaped seat 42 and the movable plate 6, and the return spring 63 applies an elastic force to the movable plate 6.

[0036] See also Figures 1 to 3 , Figure 5 The locking mechanism includes a second clamping hydraulic cylinder 7 fixedly mounted on the outer side of the L-shaped support plate 24, one end of the piston rod of the second clamping hydraulic cylinder 7 passes through the side wall of the L-shaped support plate 24 and is fixedly connected to the concave plate 71, a side of the concave plate 71 close to the inner side wall of the L-shaped support plate 24 is symmetrically fixedly connected with a cross plate 72, the upper and lower sides of the concave plate 71 are symmetrically fixedly connected with L-shaped extrusion plates 75, the ends of the concave plate 71 are fixedly connected with extrusion seats 73, and an anti-skid pad 74 is fixedly mounted on the side of the extrusion seat 73 away from the concave plate 71, and the anti-skid pad 74 abuts against the cylindrical surface of the rudder main shaft body 8.

[0037] The side surface of the L-shaped support plate 24 is symmetrically provided with sliding grooves, the horizontal plate 72 is slidably connected to the sliding grooves left and right, one end of the L-shaped extrusion plate 75 is sloped, and the L-shaped extrusion plate 75 is in extrusion contact with the movable plate 6 in the locking mechanism.

[0038] The piston rod of the second clamping hydraulic cylinder 7 is extended and retracted to drive the concave plate 71 to move left and right, so that the two concave plates 71 are moved closer to or away from each other. When the concave plate 71 moves, it drives the cross plate 72 to slide along the sliding groove on the side of the L-shaped support plate 24, so that the concave plate 71 can move stably.

[0039] When the two concave plates 71 approach each other, the concave plates 71 drive the extrusion seat 73 to move close to the rudder main shaft body 8, and the extrusion seat 73 drives the anti-skid pad 74 to cling to the side of the rudder main shaft body 8, thereby clamping and fixing the rudder main shaft body 8 to prevent the rudder main shaft body 8 from rotating.

[0040] The concave plate 71 drives the L-shaped extrusion plate 75 to move during the movement. After the L-shaped extrusion plate 75 moves a certain distance, the slope at the end of the L-shaped extrusion plate 75 contacts the movable plate 6. At this time, the L-shaped extrusion plate 75 continues to move close to the rudder main shaft body 8. At this time, the L-shaped extrusion plate 75 squeezes the movable plate 6, causing the movable plate 6 to slide inward along the light rod 61. The movable plate 6 squeezes the return spring 63. At the same time, the movable plate 6 drives the locking crown gear 64 to engage with the rotating crown gear 45, thereby locking the rotating crown gear 45. After the rotating crown gear 45 is locked, the rotating shaft 44 cannot rotate. At the same time, the lower limit cylinder 31 and the upper limit cylinder 43 cannot rotate either, thereby further preventing the rudder main shaft body 8 from rotating, thereby ensuring the stability of the rudder main shaft body 8.

[0041] By cooperating with the provided clamping mechanism, the lower limit cylinder 31, the upper limit cylinder 43, the locking mechanism and the tightening mechanism, the rudder main shaft body 8 can be firmly clamped and locked, so that the rudder main shaft body 8 cannot move or rotate, thereby accurately performing processing operations such as grooving on the rudder main shaft body 8.

[0042] Working principle: In the initial state, the two clamping mechanisms are open. When the rudder main shaft body 8 needs to be clamped, the rudder main shaft body 8 is first placed between the two clamping mechanisms so that the rudder main shaft body 8 spans the two lower support seats 3. At this time, the rudder main shaft body 8 is above the two lower limit cylinders 31 at the upper end of the lower support seat 3, and the rudder main shaft body 8 is supported by the lower limit cylinder 31 at the upper end of the lower support seat 3.

[0043] The lifting frame 2 is driven to move up and down by the extension and retraction of the inner rod of the lifting hydraulic cylinder 22, and the lifting frame 2 drives the clamping mechanism, the lower limit cylinder 31, the upper limit cylinder 43, the locking mechanism and the locking mechanism to move up and down, so that the locking tooling can adapt to equipment of different heights.

[0044] When the piston rod of the first clamping hydraulic cylinder 5 is extended to drive the lifting plate 51 to move upward, the lifting plate 51 pushes the two rotating arms 41 to move upward, and the rotating arm 41 pushes the bending arm 4 to rotate along the through slot 21, so that the lower end of the bending arm 4 rotates upward, and at the same time, the upper end of the bending arm 4 drives the L-shaped seat 42 to rotate upward, so that the two L-shaped seats 42 move close to the rudder main shaft body 8, and the two L-shaped seats 42 drive the two upper limit cylinders 43 to move close to the rudder main shaft body 8 until they contact the rudder main shaft body 8, and the rudder main shaft body 8 is clamped by the upper limit cylinder 43, and the rudder main shaft body 8 is clamped by the two lower limit cylinders 31 and the two upper limit cylinders 43. At this time, only the position of the rudder main shaft body 8 is restricted, and the rudder main shaft body 8 can be rotated, so that the rudder main shaft body 8 can be polished, ground and other processing can be performed.

[0045] When it is necessary to lock the rudder main shaft body 8 so that the rudder main shaft body 8 cannot move or rotate, the piston rods of the two second clamping hydraulic cylinders 7 are extended to push the two concave plates 71 to move closer to each other, and the concave plates 71 drive the extrusion seat 73 to move closer to the rudder main shaft body 8, and the extrusion seat 73 drives the anti-skid pad 74 to cling to the side of the rudder main shaft body 8, thereby clamping and fixing the rudder main shaft body 8 to prevent the rudder main shaft body 8 from rotating.

[0046] The concave plate 71 drives the L-shaped extrusion plate 75 to move during the movement. After the slope surface at the end of the L-shaped extrusion plate 75 contacts the movable plate 6, the L-shaped extrusion plate 75 continues to move close to the rudder main shaft body 8. The L-shaped extrusion plate 75 squeezes the movable plate 6, causing the movable plate 6 to slide inward along the light rod 61. The movable plate 6 drives the locking crown gear 64 to engage with the rotating crown gear 45, thereby locking the rotating crown gear 45. After the rotating crown gear 45 is locked, the rotating shaft 44 cannot rotate. At the same time, the lower limit cylinder 31 and the upper limit cylinder 43 cannot rotate either, thereby further preventing the rudder main shaft body 8 from rotating, thereby ensuring the stability of the rudder main shaft body 8.

[0047] By cooperating with the provided clamping mechanism, the lower limit cylinder 31, the upper limit cylinder 43, the locking mechanism and the tightening mechanism, the rudder main shaft body 8 can be firmly clamped and locked, so that the rudder main shaft body 8 cannot move or rotate, thereby accurately performing processing operations such as grooving on the rudder main shaft body 8.

[0048] The locking tool of the present invention can perform two locking modes on the rudder main shaft body 8 according to needs, so that the rudder main shaft body 8 can be processed in multiple ways.

[0049] When the rudder main shaft body 8 needs to be disassembled, the piston rod of the second clamping hydraulic cylinder 7 is first retracted to move the concave plate 71 away from the rudder main shaft body 8 until the concave plate 71 is reset. The concave plate 71 drives the anti-skid pad 74 away from the rudder main shaft body 8 through the extrusion seat 73. At the same time, the concave plate 71 drives the L-shaped extrusion plate 75 away from the movable plate 6. Under the action of the elastic force of the reset spring 63, the movable plate 6 is reset, and the movable plate 6 drives the locking crown gear 64 to separate from the rotating crown gear 45.

[0050] Then, the piston rod of the first clamping hydraulic cylinder 5 contracts to drive the lifting plate 51 to move downward, and the lifting plate 51 pulls the rotating arm 41 to move downward, and the rotating arm 41 drives the lower end of the bending arm 4 to rotate downward. At the same time, the upper end of the bending arm 4 drives the L-shaped seat 42 to rotate downward, so that the L-shaped seat 42 drives the upper limit cylinder 43 away from the rudder main shaft body 8, so that the upper limit cylinder 43 releases the clamping of the rudder main shaft body 8. At this time, the rudder main shaft body 8 can be moved upward from between the two clamping mechanisms.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A locking fixture for machining a rudder spindle, comprising a concave fixture base (1), characterized in that: The inner cavity of the concave tool base (1) is provided with guide grooves (11) symmetrically on both sides of the left and right sides of the inner cavity. The inner cavity of the concave tool base (1) is provided with lifting frames (2) symmetrically on both sides of the left and right sides. The lower ends of the two lifting frames (2) are fixedly provided with lifting hydraulic cylinders (22). The lifting hydraulic cylinders (22) are fixedly provided at the bottom of the inner cavity of the concave tool base (1). The upper ends of the two lifting frames (2) are symmetrically recessed downwards and provided with through grooves (21). The upper ends of the lifting frames (2) are fixedly connected to a lower support between the two through grooves (21). A seat (3), a lower limit cylinder (31) is rotatably mounted on the upper end of the lower support seat (3), a rudder main shaft body (8) is arranged above the lower support seat (3), a clamping mechanism for locking the rudder main shaft body (8) is symmetrically mounted on the lifting frame (2), upper limit cylinders (43) are rotatably mounted on the two clamping mechanisms, locking mechanisms are mounted on both ends of the two lower limit cylinders (31) and the two upper limit cylinders (43), and a plurality of locking mechanisms are respectively mounted on the side surfaces of the lower support seat (3) and the clamping mechanism; The upper end of the lifting frame (2) is symmetrically and fixedly connected to an L-shaped support plate (24), and locking mechanisms are installed on both L-shaped support plates (24).

2. The locking fixture for processing a rudder main shaft according to claim 1, characterized in that: The side surface of the lifting frame (2) is in vertical sliding contact with the inner side wall of the concave tooling base (1); guide plates (23) are symmetrically fixedly connected to the left and right sides of the lifting frame (2); and the guide plates (23) are vertically slidably connected to the guide grooves (11).

3. The locking tool for processing a rudder main shaft according to claim 1, characterized in that: The clamping mechanism comprises a bending arm (4) which is rotatably mounted in a through slot (21) at the upper end of the lifting frame (2) via a circular shaft, a rotating arm (41) being rotatably mounted at the lower end of the bending arm (4) via a circular shaft, a driving mechanism being mounted at the lower ends of the two rotating arms (41), an L-shaped seat (42) being fixedly connected to the upper end of the bending arm (4), a rotating slot being provided at the lower ends of the two L-shaped seats (42) in the two clamping mechanisms on one side close to each other, an upper limit cylinder (43) being mounted in the rotating slot, a rotating slot being symmetrically provided at the upper end of the lower support seat (3), a lower limit cylinder (31) being mounted in the rotating slot, both ends of the upper limit cylinder (43) and both ends of the lower limit cylinder (31) being fixedly connected to a rotating shaft (44), one end of the rotating shaft (44) being fixedly connected to a rotating crown gear (45), and the locking mechanism being arranged on a side of the rotating crown gear (45).

4. The locking tool for processing a rudder main shaft according to claim 3, characterized in that: The upper limit cylinder (43) is rotatably connected to the rotating groove of the L-shaped seat (42) via a rotating shaft (44), and the rotating shafts (44) at both ends of the upper limit cylinder (43) penetrate the L-shaped seat (42) and extend to the outside; the lower limit cylinder (31) is rotatably connected to the rotating groove of the lower support seat (3) via a rotating shaft (44), and the rotating shafts (44) at both ends of the lower limit cylinder (31) penetrate the lower support seat (3) and extend to the outside.

5. The locking tool for processing a rudder main shaft according to claim 3, characterized in that: The driving mechanism comprises a first clamping hydraulic cylinder (5) fixedly mounted at the lower end of the lifting frame (2); the upper end of the piston rod of the first clamping hydraulic cylinder (5) extends upward to the inner cavity of the lifting frame (2); the upper end of the piston rod of the first clamping hydraulic cylinder (5) is fixedly connected to a lifting plate (51); the lower end of the lifting plate (51) is symmetrically fixedly connected to a vertical plate (52); the lower end of the vertical plate (52) penetrates downward through the bottom of the lifting frame (2); and the two ends of the lifting plate (51) are respectively rotatably connected to the lower ends of the two rotating arms (41) via circular shafts.

6. The locking tool for machining a rudder main shaft according to claim 5, characterized in that: The lifting plate (51) has grooves symmetrically formed at both left and right ends, the lower end of the rotating arm (41) is mounted in the groove, and the rotating arm (41) is rotatably connected to the groove via a circular shaft, and the vertical plate (52) is slidably connected to the bottom of the lifting frame (2) up and down.

7. The locking tool for processing a rudder main shaft according to claim 3, characterized in that: The locking mechanism comprises a movable plate (6) arranged on the side of the rotating crown gear (45), two light rods (61) are inserted and penetrated through the side of the movable plate (6), the movable plate (6) is slidably connected to the light rods (61), one end of the two light rods (61) is fixedly sleeved with a limit ring (62), one end of the two light rods (61) away from the limit ring (62) is sleeved with a return spring (63), and a locking crown gear (64) is fixedly connected to the side of the movable plate (6) close to the rotating crown gear (45), and the locking crown gear (64) is clamped with the rotating crown gear (45).

8. The locking tool for processing a rudder main shaft according to claim 1, characterized in that: The locking mechanism comprises a second clamping hydraulic oil cylinder (7) fixedly mounted on the outer side surface of the L-shaped support plate (24); one end of the piston rod of the second clamping hydraulic oil cylinder (7) passes through the side wall of the L-shaped support plate (24) and is fixedly connected to the concave plate (71); a side of the concave plate (71) close to the inner side wall of the L-shaped support plate (24) is fixedly connected to a transverse plate (72) symmetrically in the front and rear; upper and lower sides of the concave plate (71) are fixedly connected to L-shaped extrusion plates (75) symmetrically in the front and rear; the ends of the concave plate (71) are fixedly connected to extrusion seats (73); a side of the extrusion seat (73) away from the concave plate (71) is fixedly mounted with an anti-skid pad (74); the anti-skid pad (74) abuts against the cylindrical surface of the rudder main shaft body (8).

9. The locking tool for processing a rudder main shaft according to claim 8, characterized in that: The side surface of the L-shaped support plate (24) is symmetrically provided with a slide groove, the horizontal plate (72) is slidably connected to the slide groove left and right, one end of the L-shaped extrusion plate (75) is a slope, and the L-shaped extrusion plate (75) is in extrusion contact with the movable plate (6) in the locking mechanism.

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