A pneumatic fixture for machining plug holes of slewing bearings

Abstract

The invention discloses a pneumatic clamp for machining plug holes of a slewing bearing, and relates to the technical field of new energy wind power. The pneumatic clamp for machining plug holes of a slewing bearing comprises six cylinders, pistons penetrating the interior of the cylinders, air pipes penetrating the upper and lower ends of the outer surface of the cylinders, and electronic components fixedly connected to one end of the air pipe away from the cylinders. The electronic components are pneumatic controllers for controlling the flow and pressure of gas in the pneumatic clamp. The outer sides of the air pipes are sleeved with sleeves, which are hollow inside and rotate under the action of an external motor through a limit plate. Under the joint action of a slider, a slide groove and an arc-shaped groove, the position of the pneumatic clamp is indirectly changed, so that the positions of the pneumatic clamps arranged in plurality can be changed at the same time to adapt to slewing bearings of different sizes, thereby achieving the purpose of adapting to the processing of slewing bearings of different sizes and reducing the cost of purchasing slewing bearings of different models.

Description

Technical Field

[0001] The invention relates to the technical field of new energy wind power, and in particular to a pneumatic clamp for machining a plug hole of a slewing bearing. Background Art

[0002] The wind power generation slewing bearing is one of the important components of the wind turbine. It bears the weight of the wind turbine blades and the force of the wind, allowing the wind turbine blades to rotate smoothly and convert wind energy into electrical energy. The quality and performance of the slewing bearing directly affect the performance of the wind turbine.

[0003] When producing slewing bearings, after quenching treatment, the slewing bearings need to be drilled. Due to the advantages of easy clamping, controllable clamping force and easy maintenance, pneumatic clamps are often used to fix the slewing bearings at the beginning of the slewing bearings. Pneumatic clamps use compressed gas as the driving force, but during the processing, if the gas leaks, the clamping force of the pneumatic clamp may decrease. During the drilling process of the slewing bearing, the slewing bearing is subjected to the impact force of the drill bit. If the clamping force applied is insufficient, the slewing bearing may deviate from its expected position, and then deviate from its drilling axis, causing hole expansion, and ultimately causing the slewing bearing to be scrapped.

[0004] At the same time, in the slewing bearing processing process that the pneumatic clamp is responsible for, if the gas leakage is not detected in the first time, then the duration of the leaked gas will not enter the termination mode until the staff finds its whereabouts. The duration of this process cannot be accurately estimated, which will further lead to the risk of a large number of slewing bearings being scrapped due to quality problems.

[0005] In addition, the clamping size of pneumatic clamps is mostly fixed. Different sizes of slewing bearings require different pneumatic clamps. However, the cost of pneumatic clamps is high, and purchasing a large number of pneumatic clamps requires a lot of cost.

[0006] In this regard, we propose a pneumatic fixture for processing slewing bearing plug holes, which can quickly detect whether the pneumatic fixture has air leakage during operation, promptly remind the staff if the fixture has air leakage, adapt to the processing of slewing bearings of different sizes, and promptly stop the drilling work of the slewing bearing if air leakage occurs, to solve the above problems. Summary of the invention

[0007] 1. Technical issues to be resolved

[0008] In view of this, and in view of the deficiencies in the prior art, the present invention provides a pneumatic fixture for machining a plug hole of a slewing bearing to solve the problems raised in the above-mentioned background technology.

[0009] (II) Technical solution

[0010] In order to achieve the purpose of quickly detecting whether the pneumatic clamp has leakage during operation, promptly reminding the staff if the clamp has leakage, adapting to the processing of slewing bearings of different sizes, and promptly stopping the drilling work of the slewing bearing if leakage occurs, the present invention provides the following technical scheme: a pneumatic clamp for processing plug holes of a slewing bearing, comprising six cylinders, a piston penetrating the interior of the cylinder, an air pipe penetrating the upper and lower ends of the outer surface of the cylinder, and an electronic component fixedly connected to the air pipe away from one end of the cylinder, the electronic component being a pneumatic controller for controlling the flow rate and pressure of the gas in the pneumatic clamp, the outer side of the air pipe is sleeved with a sleeve, the interior of the sleeve is hollow, a circular hole with a size matching the sleeve is opened inside the sleeve, the two ends of the sleeve are respectively fixedly connected to the cylinder and the electronic component, the outer sides of the two sleeves are fixedly connected with a positioning tube, the positioning tube is cross-shaped, a hollow inner cavity is opened inside the positioning tube, the positioning tube is arranged between the two sleeves, and the inner side of the sleeve close to one end of the air pipe is provided with a hollow inner cavity. The two ends of the gas extrusion chamber are provided with a gas extrusion chamber, and the inner part of the sleeve away from the end of the air pipe is provided with a cavity, the inner diameter of the cavity is larger than the inner diameter of the gas extrusion chamber, the gas extrusion chamber and the cavity are mutually connected, and the interiors of the two sleeves are respectively provided with extrusion rods that penetrate the gas extrusion chamber and the cavity, and a spring is provided on the outside of the extrusion rod, and the ends of the extrusion rods away from the air pipe are fixedly connected with extrusion pieces, and the size of the extrusion pieces is adapted to the follower one and the follower two, and the interior of one end of the positioning tube is provided with a follower one, and the end of the follower one away from the middle position of the positioning tube is fixedly connected with a round rod that penetrates the inner cavity of the positioning tube, and the outer side of the follower one is fixedly connected with a wedge block arranged around the round rod, and the number and size of the wedge blocks are adapted to the through hole provided on the positioning tube, and the end of the round rod away from the follower one is provided with a switch fixedly connected to the electronic component, and the switch is electrically connected to the power supply of the electronic component, and the top of the cylinder is provided with a slider, and the size of the slider is adapted to the slide groove provided on the support seat and the arc groove provided on the limit plate;

[0011] It also includes a follower 2 arranged inside the positioning tube, wherein one end of the follower 2 away from the middle position of the positioning tube is fixedly connected to a conductive block, the conductive block passes through the inner cavity of the positioning tube, an alarm is arranged on the outside of the other end of the positioning tube, and the conductive block is electrically connected to the alarm.

[0012] Preferably, a spring is arranged outside the round rod, and the end of the wedge away from the follower passes through the inner cavity of the positioning tube close to the switch end, and the switch is electrically connected to the electronic component.

[0013] Preferably, a spring is arranged outside the second follower, and the end of the conductive block away from the second follower passes through the inner cavity of the end of the positioning tube away from the round rod.

[0014] Preferably, the support seat is provided with six slide grooves around the center point of the support seat, and the size of the slide grooves is adapted to the slider. The support seat is rotatably connected to a limit plate at the bottom, and the limit plate is connected to the power output shaft of the external motor. The limit plate is provided with six arc-shaped grooves arranged around the center point of the limit plate, and the size of the arc-shaped grooves is adapted to the slider. The bottom of the limit plate is rotatably connected to a base plate.

[0015] Preferably, one end of the arc-shaped groove close to the center point of the limiting plate and one end of the sliding groove close to the center point of the supporting seat are vertically fitted to each other.

[0016] Preferably, each of the sliding blocks is slidably connected inside the sliding slot and the arc-shaped groove.

[0017] Preferably, the fixing block is fixedly connected with heat-conducting silicone below one end away from the piston.

[0018] Preferably, the side of the cylinder away from the sleeve is fixedly connected to a fixing seat, the top of the fixing seat is fixedly connected to a positioning block, the outer side of the positioning block is sleeved with a fixing spring, and the bottom end of the fixing spring is arranged above the fixing seat.

[0019] Preferably, a placing plate is provided on the outer side of the positioning block away from one end of the fixed seat, a groove with a size matching the positioning block is opened inside the placing plate, a spring is provided inside the placing plate, the placing plate is arranged on the top of the fixed spring, and a connecting piece is rotatably connected to the outer side of the placing plate, the size of the connecting piece is matched with the distance between the placing plate and the arc extrusion block, the connecting piece is rotatably connected to the end of the placing plate away from the placing plate with an arc extrusion block rotatably connected to the bottom of the fixed seat, and the cross-section of the arc extrusion block is an arc.

[0020] (III) Beneficial effects

[0021] Compared with the prior art, the present invention provides a pneumatic fixture for machining plug holes of slewing bearings, which has the following beneficial effects:

[0022] 1. Through the rapid diffusion of compressed gas when it leaks, the gas will quickly diffuse in the gas extrusion cavity, and the gas will force the extrusion rod to move, indirectly making the round rod contact with the switch, and then the power supply of the electronic components that control the operation of the pneumatic clamp will be turned off through the switch, interrupting the processing of the slewing bearing. If the pneumatic clamp has a gas leak during the slewing bearing processing, the compressed gas leakage will diffuse quickly at room temperature, and then the processing of the slewing bearing will be stopped through the diffusion of the gas, avoiding gas leakage during the processing, resulting in a decrease in the clamping force of the pneumatic clamp, causing the drilling position to shift due to insufficient clamping force during the drilling process of the slewing bearing, resulting in the scrapping of the slewing bearing.

[0023] 2. Through the diffusion of compressed gas, the circuit inside the alarm that is initially disconnected can be indirectly connected, so that the alarm can sound sensitively and issue a warning in time. The implementation of this strategy can also ensure that the alarm successfully reminds the staff to pay attention to possible problems with the pneumatic clamp, thereby ensuring that the staff can detect the occurrence of problems with the pneumatic clamp in time.

[0024] 3. The limit plate rotates under the action of the external motor, and the position of the pneumatic clamp can be indirectly changed under the joint action of the slider, the slide groove and the arc groove, so that the positions of multiple pneumatic clamps can be changed at the same time to adapt to slewing bearings of different sizes, thereby achieving the purpose of adapting to the processing of slewing bearings of different sizes and reducing the cost of purchasing slewing bearings of different models.

[0025] 4. Through the rapid diffusion of compressed gas, if the pneumatic clamp leaks during operation, the clamping work of the pneumatic clamp will stop immediately. The staff observes that the pneumatic clamp stops working and the alarm sounds. The two cooperate with each other, so that the staff can promptly and quickly understand that the compressed gas of the pneumatic clamp is leaking, thereby achieving the purpose of timely reminding the staff of the failure of the pneumatic clamp.

[0026] 5. The six groups of pneumatic clamps are arranged symmetrically around the center. The six groups of pneumatic clamps can provide sufficient clamping force to fix the position of the slewing bearing. At the same time, when the pneumatic clamps are fixing the slewing bearing, the slewing bearing will heat up rapidly due to the high-speed friction between the slewing bearing and the drill bit. At this time, if there are too many clamping points of the slewing bearing, the slewing bearing will be more affected by the clamping force of the pneumatic clamps. Under high temperature, too many clamping positions of the slewing bearing may cause deformation of the clamping points of the slewing bearing, affecting the quality of the slewing bearing, thereby achieving the purpose of firmly fixing the slewing bearing while avoiding deformation of the slewing bearing during drilling due to too many clamping points. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the overall appearance of the present invention;

[0028] Figure 2 It is a bottom schematic diagram of the overall structure of the present invention;

[0029] Figure 3 It is a schematic diagram of the position relationship of the slider of the present invention;

[0030] Figure 4 It is a schematic diagram of the connection relationship of the sleeve of the present invention;

[0031] Figure 5 For the present invention Figure 4 A magnified view of the structure at center;

[0032] Figure 6It is a cross-sectional schematic diagram of the placement plate of the present invention;

[0033] Figure 7 This is a schematic diagram of the connection relationship of the positioning pipe of the present invention;

[0034] Figure 8 is a schematic diagram of the internal cross-section of the positioning tube of the present invention;

[0035] Fig. 9 It is a schematic diagram of the connection relationship of the extrusion part of the present invention;

[0036] Fig.10 For the present invention Fig. 9 Enlarged view of the structure at point B in the middle.

[0037] In the figure: 101, cylinder; 102, piston; 103, air pipe; 104, electronic components; 105, sleeve; 106, positioning tube; 107, gas extrusion chamber; 108, cavity; 109, extrusion rod; 110, extrusion member; 111, follower 1; 112, round rod; 113, wedge; 114, switch; 115, slider;

[0038] 201, follower 2; 202, conductive block; 203, alarm;

[0039] 301, support seat; 302, slide groove; 303, limit plate; 304, arc groove; 305, bottom plate;

[0040] 401, fixing block; 402, thermal conductive silica gel; 403, fixing seat; 404, positioning block; 405, fixing spring; 406, placing plate; 407, connecting piece; 408, arc extrusion block. DETAILED DESCRIPTION

[0041] 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.

[0042] Example

[0043] See also Figures 1 to 4 and Figures 7 to 10A pneumatic fixture for processing plug holes of slewing bearings comprises six cylinders 101, pistons 102 penetrating the inside of the cylinders 101, air pipes 103 penetrating the upper and lower ends of the outer surface of the cylinders 101, and electronic components 104 fixedly connected to the ends of the air pipes 103 away from the cylinders 101. The electronic components 104 are pneumatic controllers for controlling the flow and pressure of the gas in the pneumatic fixture. The outer sides of the air pipes 103 are sleeved with sleeves 105, the sleeves 105 are hollow, and a circular hole with a size matching that of the sleeves 105 is opened inside the sleeves 105. The two ends of the sleeves 105 are fixedly connected to the cylinders 101 and the electronic components 104, respectively. The outer sides of the two sleeves 105 are fixedly connected with positioning tubes 106, and the shape of the positioning tubes 106 is ten The positioning tube 106 has a hollow inner cavity, and the positioning tube 106 is arranged between the two sleeves 105. The sleeve 105 near the end of the trachea 103 has a gas extrusion cavity 107, and the sleeve 105 away from the end of the trachea 103 has a cavity 108. The inner diameter of the cavity 108 is larger than the inner diameter of the gas extrusion cavity 107. The gas extrusion cavity 107 and the cavity 108 are interconnected. The two sleeves 105 are respectively provided with extrusion rods 109 that penetrate the gas extrusion cavity 107 and the cavity 108. The outside of the extrusion rod 109 is provided with a spring. The end of the extrusion rod 109 away from the trachea 103 is fixedly connected with an extrusion piece 110. The size of the extrusion piece 110 is adapted to the follower 111 and the follower 201. A follower 111 is provided inside one end of the positioning tube 106, and a round rod 112 that passes through the inner cavity of the positioning tube 106 is fixedly connected to the end of the follower 111 away from the middle position of the positioning tube 106, and a spring is provided on the outside of the round rod 112. A wedge 113 arranged around the round rod 112 is fixedly connected to the outer side of the follower 111, and the end of the wedge 113 away from the follower 111 passes through the inner cavity of the positioning tube 106 near the end of the switch 114. The number and size of the wedges 113 are adapted to the through holes provided on the positioning tube 106, and a switch 114 fixedly connected to the electronic component 104 is provided on the end of the round rod 112 away from the follower 111. The switch 114 is electrically connected to the electronic component 104, and the top of the cylinder 101 is all A slider 115 is provided, and the size of the slider 115 is adapted to the slide groove 302 opened on the support seat 301 and the arc groove 304 opened on the limit plate 303. It also includes a follower 201 arranged inside the positioning tube 106, and a spring is arranged on the outside of the follower 201. The end of the follower 201 away from the middle position of the positioning tube 106 is fixedly connected with a conductive block 202. The end of the conductive block 202 away from the follower 201 passes through the inner cavity of the positioning tube 106 away from the end of the round rod 112. The conductive block 202 passes through the inner cavity of the positioning tube 106. An alarm 203 is arranged on the outside of the other end of the positioning tube 106. A circuit that is initially disconnected is arranged inside the alarm 203, and the conductive block 202 is electrically connected to the alarm 203.

[0044] The effects achieved by this embodiment are as follows: compared with the prior art, the device indirectly closes the clamping of the pneumatic clamp and the drilling of the slewing bearing through the rapid diffusion of compressed gas when it leaks. At the same time, the alarm 203 sounds an alarm to remind the staff that the pneumatic clamp leaks during operation, thereby avoiding gas leakage during processing, which leads to a decrease in the clamping force of the pneumatic clamp, resulting in the drilling position being offset due to insufficient clamping force during the drilling process of the slewing bearing, and the staff being unable to promptly learn of the gas leakage in the pneumatic clamp, resulting in a large number of slewing bearings being scrapped.

[0045] Further Embodiments

[0046] See also Figures 1 to 6 , a pneumatic clamp for machining a plug hole of a slewing bearing, comprising a support seat 301 arranged at the bottom of a cylinder barrel 101, six slide grooves 302 are provided on the support seat 301 around the center point of the support seat 301, the size of the slide groove 302 is adapted to the slider 115, and a limit plate 303 is rotatably connected to the lower part of the support seat 301, and the limit plate 303 is connected to the power output shaft of an external motor, and six arc-shaped grooves 304 arranged around the center point of the limit plate 303 are provided on the limit plate 303, and one end of the arc-shaped groove 304 close to the center point of the limit plate 303 is vertically fitted with one end of the slide groove 302 close to the center point of the support seat 301, and the size of the arc-shaped groove 304 is adapted to the slider 115, and the bottom of the limit plate 303 is rotatably connected to a bottom plate 305, and also comprises a fixed block 401 fixedly connected to the top end of the piston 102, and a heat-conducting silicone rubber 40 is fixedly connected to the lower part of the fixed block 401 away from the end of the piston 102 2. The side of the cylinder 101 away from the sleeve 105 is fixedly connected with a fixing seat 403, the top of the fixing seat 403 is fixedly connected with a positioning block 404, the outer side of the positioning block 404 is sleeved with a fixing spring 405, the bottom end of the fixing spring 405 is arranged above the fixing seat 403, and the outer side of the positioning block 404 away from the fixed seat 403 is provided with a placement plate 406, the inside of the placement plate 406 is provided with a groove whose size matches the positioning block 404, the inside of the placement plate 406 is provided with a spring, the placement plate 406 is arranged on the top of the fixing spring 405, and the outer side of the placement plate 406 is rotatably connected with a connecting piece 407, the size of the connecting piece 407 is adapted to the distance between the placement plate 406 and the arc extrusion block 408, the end of the connecting piece 407 away from the placement plate 406 is rotatably connected with an arc extrusion block 408 whose bottom is rotatably connected to the fixing seat 403, and the cross section of the arc extrusion block 408 is an arc.

[0047] The effects achieved by this embodiment are as follows: compared with the prior art, the device is provided with six groups of pneumatic clamps to provide sufficient clamping force. Setting too many clamps will increase the clamping points of the slewing bearing accordingly. Since the slewing bearing generates heat due to friction with the drill bit during the drilling process, too many clamping points increase the clamping force on the slewing bearing, causing the clamping points between the slewing bearing and the pneumatic clamps to deform in a high temperature environment, resulting in the slewing bearing being scrapped. At the same time, the position of the pneumatic clamp can be adjusted to adapt to the clamping of slewing bearings of different sizes, reducing the cost of purchasing slewing bearings of different models.

[0048] The working process and principle of the overall content of the above embodiment are as follows:

[0049] First, the staff starts the external motor, and the limit plate 303 connected to the energy output shaft of the external motor will rotate with the connection point with the bottom plate 305 as the fulcrum. As the limit plate 303 rotates, the arc groove 304 provided on the limit plate 303 will move accordingly. At this time, the slider 115 slidably connected to the arc groove 304 and the slide groove 302 provided on the support seat 301 will move along the track of the slide groove 302 under the rotation of the limit plate 303, thereby adjusting the position of the cylinder 101 fixedly connected to the slider 115, thereby adjusting the position of the cylinder 101, so as to achieve the purpose of conveniently adjusting the position of the pneumatic clamp, clamping slewing bearings of different sizes that need to be drilled, and reducing the cost required to purchase pneumatic clamps of different models;

[0050] When the cylinder 101 moves, the piston 102 disposed inside the cylinder 101 and the fixed seat 403 fixedly connected to the cylinder 101 will move accordingly, and the positioning block 404 disposed on the fixed seat 403 will also move. After determining that the clamping position of the pneumatic clamp is adapted to the inner diameter of the slewing bearing to be drilled, the slewing bearing is placed on the placement plate 406. The placement plate 406 moves downward under the gravity from the slewing bearing, compressing the spring disposed inside the placement plate 406, while squeezing the fixed spring 405 disposed outside the positioning block 404.

[0051] As the placement plate 406 moves downward, the connecting piece 407 rotatably connected to the outer side of the placement plate 406 and the arc-shaped extrusion block 408 rotatably connected to the other end of the connecting piece 407 will move accordingly. Under the action of the connecting piece 407, the arc-shaped extrusion block 408 rotates with the connection point with the fixed seat 403 as a fulcrum. The arc-shaped end of the arc-shaped extrusion block 408 away from the fixed seat 403 will fit the inner wall of the slewing bearing to fix the position of the slewing bearing.

[0052] Then the piston 102 is started under the action of the electronic component 104, and compressed gas is injected into the cylinder 101, so that the piston 102 arranged inside the cylinder 101 moves toward the top surface of the slewing bearing under the action of the compressed gas, and the fixed block 401 fixedly connected to the piston 102 moves accordingly, until the thermal conductive silicone 402 arranged on the fixed block 401 fits the slewing bearing, and the position of the slewing bearing is fixed;

[0053] The pneumatic clamp is provided with six groups, and the six groups of pneumatic clamps fix the position of the slewing bearing. The setting of the six groups of pneumatic clamps can provide a clamping force sufficient to fix the position of the slewing bearing. At the same time, when the pneumatic clamp is fixing the slewing bearing, the slewing bearing will heat up rapidly due to the high-speed friction between the slewing bearing and the drill bit. At this time, if there are too many clamping points of the slewing support, the slewing bearing will be more affected by the clamping force of the pneumatic clamp. Under high temperature, the clamping position of the slewing bearing may be deformed, affecting the quality of the slewing bearing. At the same time, the thermal conductive silica gel 402 can quickly conduct the heat of the position in contact with the slewing bearing, reducing the possibility of deformation of the clamping position of the slewing bearing when drilling.

[0054] During the slewing bearing drilling process, if the air pipe 103 leaks, the compressed gas leaking from the air pipe 103 will diffuse rapidly at room temperature until it permeates the sleeve 105 disposed outside the air pipe 103 and gradually fills the gas extrusion cavity 107 in the sleeve 105, forcing the extrusion rod 109 disposed inside the sleeve 105 to move in the gas extrusion cavity 107 toward the cavity 108, thereby compressing the spring disposed outside the extrusion rod 109;

[0055] During the movement of the extrusion rod 109, the extrusion member 110 fixedly connected to the extrusion rod 109 will move accordingly, and gradually fit with the follower member 1 111 and the follower member 201, and then force the follower member 1 111 and the follower member 201 to move away from each other inside the cross-shaped positioning tube 106, and compress the springs respectively arranged outside the follower member 1 111 and the follower member 201;

[0056] When the follower 111 moves, the round rod 112 fixedly connected thereto and the wedge block 113 fixed on the follower 111 will move accordingly, and the round rod 112 gradually contacts the switch 114 and switches 114, so that the electronic component 104 electrically connected to the switch 114 is turned off, and the clamping of the slewing bearing is stopped, so as to avoid gas leakage during the processing, resulting in a decrease in the clamping force of the pneumatic clamp, and to prevent the hole position from being offset due to insufficient clamping force during the drilling process of the slewing bearing, thereby causing damage to the slewing bearing;

[0057] At the same time, the movement of the follower 201 causes the conductive block 202 fixedly connected thereto to move toward the alarm 203, until the circuit in the alarm 203 that is electrically connected to the conductive block 202 and is initially disconnected is connected, so that the alarm 203 sounds and issues a warning in a timely manner. The implementation of this strategy can also ensure that the alarm successfully reminds the staff to pay attention to possible problems with the pneumatic clamp, thereby ensuring that the staff can detect the occurrence of problems with the pneumatic clamp in a timely manner.

[0058] As the extrusion rod 109 continues to move under the pressure of the leaking gas, the extrusion rod 109, which was originally in contact with the inner wall of the gas extrusion chamber 107 opened inside the sleeve 105, will gradually move into the cavity 108. Since the diameter of the cavity 108 is larger than the diameter of the gas extrusion chamber 107, a gap will appear between the extrusion rod 109 and the sleeve 105, and the leaked gas will enter the cavity 108 and diffuse into the positioning tube 106 connected to the sleeve 105. Since the follower 111 moves and drives the wedge block 113 fixedly connected to it to move together, the wedge block 113, which was originally in contact with the positioning tube 106, will move along, and the interior of the positioning tube 106 is not in a closed state. The leaked gas will be discharged from the gap between the positioning tube 106 and the wedge block 113, causing the extrusion rod 109 to lose gas pressure and return to its original position under the rebound action of the spring arranged outside it. Other structures connected to the extrusion rod 109 will also move in the opposite direction according to the above steps until they return to their original positions.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0060] 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 pneumatic fixture for machining plug holes of a slewing bearing, comprising six cylinders (101), pistons (102) penetrating the interior of the cylinders (101), air pipes (103) penetrating the outer surfaces of the cylinders (101) at both upper and lower ends, and electronic components (104) fixedly connected to one end of the air pipe (103) away from the cylinders (101), characterized in that: The outer side of the air pipe (103) is sleeved with a sleeve (105), and the two ends of the sleeve (105) are respectively fixedly connected to the cylinder (101) and the electronic component (104). The outer sides of the two sleeves (105) are respectively fixedly connected with a positioning tube (106), and the positioning tube (106) is arranged between the two sleeves (105). The sleeve (105) at one end close to the air pipe (103) is provided with a gas extrusion cavity (107), and the sleeve (105) at one end away from the air pipe (103) is provided with a cavity (108). The gas extrusion cavity (107) and the cavity (108) are interconnected, and the interiors of the two sleeves (105) are respectively provided with a gas extrusion cavity (107) and a cavity (108) penetrating the gas extrusion cavity (107) and the cavity (108). An extrusion rod (109) of the cavity (108), one end of the extrusion rod (109) away from the air pipe (103) is fixedly connected to an extrusion piece (110), a follower piece (111) is arranged inside one end of the positioning tube (106), one end of the follower piece (111) away from the middle position of the positioning tube (106) is fixedly connected to a round rod (112) penetrating the inner cavity of the positioning tube (106), a wedge (113) arranged around the round rod (112) is fixedly connected to the outer side of the follower piece (111), one end of the round rod (112) away from the follower piece (111) is provided with a switch (114) fixedly connected to the electronic component (104), and a slider (115) is arranged on the top of the cylinder (101); It also includes a second follower (201) arranged inside the positioning tube (106), one end of the second follower (201) away from the middle position of the positioning tube (106) is fixedly connected to a conductive block (202), the conductive block (202) passes through the inner cavity of the positioning tube (106), an alarm (203) is arranged on the outside of the other end of the positioning tube (106), and the conductive block (202) and the alarm (203) are electrically connected; The diameter of the cavity (108) is greater than the diameter of the gas extrusion cavity (107); A spring is arranged outside the round rod (112); an end of the wedge block (113) away from the follower (111) penetrates the inner cavity of the positioning tube (106) near the switch (114); and the switch (114) is electrically connected to the electronic component (104); A spring is arranged outside the second follower (201), and the end of the conductive block (202) away from the second follower (201) penetrates the inner cavity of the end of the positioning tube (106) away from the round rod (112).

2. The pneumatic fixture for machining the plug hole of a slewing bearing according to claim 1, characterized in that: The invention also comprises a support seat (301) arranged at the bottom of the cylinder (101), the support seat (301) is provided with six slide grooves (302) around the center point of the support seat (301), the support seat (301) is rotatably connected to a limit plate (303) below, the limit plate (303) is provided with six arc grooves (304) around the center point of the limit plate (303), and the bottom of the limit plate (303) is rotatably connected to a bottom plate (305).

3. The pneumatic fixture for machining the plug hole of a slewing bearing according to claim 2, characterized in that: One end of the arc-shaped groove (304) close to the center point of the limiting plate (303) and one end of the sliding groove (302) close to the center point of the supporting seat (301) are vertically fitted to each other.

4. The pneumatic fixture for machining the plug hole of a slewing bearing according to claim 3, characterized in that: Each of the sliding blocks (115) is slidably connected inside the sliding groove (302) and the arc-shaped groove (304).

5. The pneumatic fixture for machining the plug hole of a slewing bearing according to claim 1, characterized in that: It also includes a fixed block (401) fixedly connected to the top of the piston (102), and a heat-conducting silica gel (402) is fixedly connected below one end of the fixed block (401) away from the piston (102).

6. The pneumatic fixture for machining the plug hole of a slewing bearing according to claim 1, characterized in that: A fixed seat (403) is fixedly connected to one side of the cylinder (101) away from the sleeve (105), a positioning block (404) is fixedly connected to the top of the fixed seat (403), a fixing spring (405) is sleeved on the outer side of the positioning block (404), and the bottom end of the fixing spring (405) is arranged above the fixing seat (403).

7. The pneumatic fixture for machining the plug hole of a slewing bearing according to claim 6, characterized in that: A placement plate (406) is arranged on the outer side of one end of the positioning block (404) away from the fixed seat (403), and the placement plate (406) is arranged on the top of the fixed spring (405). The outer side of the placement plate (406) is rotatably connected to a connecting piece (407), and the end of the connecting piece (407) away from the placement plate (406) is rotatably connected to an arc-shaped extrusion block (408) whose bottom is rotatably connected to the fixed seat (403).

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