Large bolt lubricating grease automatic spraying device

Abstract

The utility model relates to the technical field of bolt lubricating grease spraying, and discloses a large bolt lubricating grease automatic spraying device which comprises a bottom box, an operation box, a lower vertical partition plate located in the bottom box, an upper vertical partition plate located in the operation box and a transverse partition plate located between the bottom box and the operation box. A sliding rail is fixedly mounted on the left side in the bottom box, and a lubricating grease supply assembly is slidably mounted in the bottom box through the sliding rail. According to the large bolt lubricating grease automatic spraying device, the horizontal displacement assembly, the rotary supporting assembly, the lifting type screw clamping assembly, the lubricating grease spraying assembly and the rotary clamping assembly are arranged, the lubricating grease spraying assembly can spray lubricating grease on a to-be-machined bolt, and the overall automation degree is high; the two pneumatic parallel grippers can clamp the tail ends of to-be-machined bolts of different sizes, the two sets of clamping wheels clamp the to-be-machined bolts of different sizes, lubricating grease of different sizes can be conveniently sprayed, and limitation is small.

Description

TECHNICAL FIELD

[0001] The utility model relates to bolt lubricating grease spraying technical field, concretely is a kind of large bolt lubricating grease automatic spraying device. BACKGROUND

[0002] Large bolt is a kind of mechanical connecting piece, generally used in large-scale mechanical equipment, building structure, bridge, heavy vehicle etc. scene, large structural member is extremely high to bolt fastening torque requirement, bolt pre-tightening torque can reach thousands even tens of thousands of newton-meter, in order to overcome the friction between thread, and prevent bolt nut from engaging in the fastening process, usually need to smear lubricating grease treatment to bolt, the diameter, length specification of bolt are numerous, so lubricating grease is mostly smeared in the way of artificial, artificial brush lubricating grease is smeared on the surface of bolt, the existing large bolt lubricating grease smearing device, also using brush to smear the surface of large bolt.

[0003] However, artificial smearing mode still has the following problems, smearing workload is big, and artificial smearing can easily appear uneven, smearing amount is too large Lubricating grease, and the existing large bolt lubricating grease smearing device, mostly using the way of brush to smear lubricating grease to large bolt, without using spray gun smearing, cannot accurately control the use of lubricating grease, easily appears lubricating grease waste condition, practicality intersection. SUMMARY

[0004] The utility model provides a kind of large bolt lubricating grease automatic spraying device, it can effectively solve the problems in the prior art.

[0005] The technical scheme adopted by the utility model is: a kind of large bolt lubricating grease automatic spraying device, including bottom box, operating box, and the lower vertical baffle in the inside of bottom box, the upper vertical baffle in the inside of operating box and the horizontal baffle between bottom box and operating box, the left side fixed mounting of the inside of bottom box has slide rail, the inside of bottom box is slidably installed with lubricating grease supply assembly by slide rail, the front side fixed mounting of lower vertical baffle has gas distribution valve assembly, the top of horizontal baffle is fixedly installed with support column, the end of support column away from horizontal baffle is fixedly installed with splash guard, the middle of horizontal baffle is slidably installed with connecting piece, the upper side of horizontal baffle is provided with horizontal displacement component, the upper side of connecting piece is provided with rotary support component, the lower side of connecting piece is provided with lifting screw clamping component, the upper side of horizontal baffle is fixedly installed with upper fixed plate at the back of upper vertical baffle, the upper side of upper fixed plate is provided with lubricating grease spraying assembly, the left side of the top of horizontal baffle is provided with rotary clamping component, the inside of rotary support component is placed with the bolt to be processed.

[0006] Preferably, the front side of the operation box is provided with an operation panel, the front side of the operation box is rotatably installed with a box cover at the end away from the operation panel, and the lubricating grease feeding assembly and the lubricating grease spraying assembly are communicated through a hose.

[0007] Through the above technical scheme, during use of the device, the lubricating grease in the lubricating grease feeding assembly can be delivered to the lubricating grease spraying assembly in the lubricating grease spraying assembly through the hose.

[0008] Preferably, the rotating support assembly comprises a first double-shaft air cylinder, the first double-shaft air cylinder is fixedly installed at the top end of the connecting piece, the movable end of the first double-shaft air cylinder is fixedly installed with a clamping frame, the inner side of the clamping frame is provided with a rotating shaft, the outer side of the rotating shaft is rotatably installed with a clamping wheel, the clamping frame, the rotating shaft and the rotating shaft are provided with the same two groups, and the two groups of the clamping frame, the rotating shaft and the rotating shaft are symmetrically distributed about the center line of the first double-shaft air cylinder.

[0009] Through the above technical scheme, during use, the first double-shaft air cylinder controls the relative movement of the two clamping frames, and the relative movement of the two clamping frames drives the clamping wheel to clamp the bolt to be machined.

[0010] Preferably, the horizontal displacement assembly comprises a horizontal displacement servo module, the horizontal displacement servo module is fixedly installed at the top end of the transverse partition plate, the movable end of the horizontal displacement servo module is fixedly installed with a movable block, the top end of the transverse partition plate is fixedly installed with a guide rail, the upper side of the guide rail is slidably installed with a sliding block, and the sliding block is fixedly connected with the lower side of the first double-shaft air cylinder.

[0011] Through the above technical scheme, during use, the horizontal displacement servo module can transmit power to the connecting piece through the upper movable block, drive the rotating support assembly and the lifting screw clamping assembly to move horizontally through the connecting piece, and control the horizontal movement of the bolt to be machined.

[0012] Preferably, the lifting screw clamping assembly comprises a lifting driver, the lifting driver is fixedly installed at the lower side of the connecting piece, the movable end of the lifting driver is fixedly installed with a movable plate, the top end of the movable plate is fixedly installed with a connecting rod, the outer side of the connecting rod is fixedly installed with a limiting block, the top end of the connecting rod is fixedly installed with a V-shaped support block, and the limiting block is located on both sides of the movable block and is in plug-in connection with the movable block.

[0013] Through the above technical scheme, during use, the lifting driver transmits power to the movable plate, the movable plate transmits power to the V-shaped support block through the connecting rod, and the V-shaped support block can adjust the bolt to be machined. The height can be adjusted according to the specifications of the bolt to be machined, so that the height is consistent with that of the rotating clamping assembly.

[0014] Preferably, the lubricating grease spraying assembly comprises an X-axis displacement servo module fixedly installed on the upper side of the upper fixed plate, a first connecting block fixedly installed at the movable end of the X-axis displacement servo module, a Y-axis displacement servo module fixedly installed at the top end of the first connecting block, a second connecting block fixedly installed at the movable end of the Y-axis displacement servo module, and a lubricating grease spraying assembly fixedly installed on the upper side of the second connecting block, wherein the front side of the lubricating grease spraying assembly is provided with a spray gun, and the lubricating grease spraying assembly is provided with two identical assemblies which are symmetrically distributed about the center line of the upper fixed plate.

[0015] Through the above technical scheme, when in use, the lubricating grease spraying assembly and the spray gun can move along the X-axis and Y-axis directions through the cooperation of the X-axis displacement servo module and the Y-axis displacement servo module, so that horizontal spraying can be performed, and the distance between the lubricating grease spraying assembly and the spray gun and the bolt to be processed can be realized.

[0016] Preferably, the rotating clamping assembly comprises a support plate fixedly connected with the transverse partition plate, a servo motor fixedly installed on the side of the support plate away from the rotating support assembly, a turntable drivingly installed on the output shaft of the servo motor, a second double-shaft air cylinder fixedly installed on the side of the turntable away from the servo motor, and a pneumatic parallel gripper fixedly installed at the movable end of the second double-shaft air cylinder, wherein the pneumatic parallel gripper is provided with two identical assemblies which are symmetrically distributed about the center line of the turntable.

[0017] Through the above technical scheme, when in use, the movable end of the second double-shaft air cylinder drives the relative movement of the pneumatic parallel gripper, and the two pneumatic parallel grippers clamp the bolt to be processed, and after clamping is completed, the servo motor can drive the bolt to be processed to rotate through the turntable, the second double-shaft air cylinder and the pneumatic parallel gripper, thereby facilitating uniform spraying of the bolt to be processed.

[0018] Compared with the prior art, the present application provides a large bolt lubricating grease automatic spraying device, which has the following advantages:

[0019] 1. The large bolt lubricating grease automatic spraying device is provided with a horizontal displacement assembly, a rotating support assembly, a lifting screw clamping assembly, a lubricating grease spraying assembly and a rotating clamping assembly, the height of the bolt to be processed can be adjusted through the lifting screw clamping assembly, the horizontal displacement assembly can move horizontally through the lifting screw clamping assembly, the rotating support assembly can clamp the threaded portion of the bolt to be processed, the rotating clamping assembly can clamp and rotate the end portion of the bolt to be processed, and the lubricating grease spraying assembly can spray lubricating grease on the bolt to be processed, so that the overall degree of automation is high, the amount of lubricating grease can be accurately controlled, the waste of lubricating grease is reduced, and the use cost is reduced.

[0020] 2、The utility model discloses a large -scale bolt lubricating grease automatic spraying device, through the mutual cooperation of rotary clamping subassembly and rotary support subassembly, two pneumatic parallel grippers in rotary clamping subassembly can be clamped to the tail end of the bolt of different sizes of to be processed, and the relative movement of two clamping frames in rotary support subassembly drives the clamping wheel to clamp the bolt of different sizes to be processed, is convenient to the lubricating grease spraying of different sizes, and the practicality is higher, and the limitation is less. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the three -dimensional structure schematic diagram of the utility model;

[0022] Figure 2 It is the rotary clamping subassembly installation structure schematic diagram of the utility model;

[0023] Figure 3 It is the lubricating grease spraying subassembly installation structure schematic diagram of the utility model;

[0024] Figure 4 It is the operation box internal structure schematic diagram of the utility model;

[0025] Figure 5 It is the lubricating grease spraying subassembly three -dimensional structure schematic diagram of the utility model;

[0026] Figure 6 It is the rotary support subassembly three -dimensional structure schematic diagram of the utility model Figure 1 ;

[0027] Figure 7 It is the rotary support subassembly three -dimensional structure schematic diagram of the utility model Figure 2 ;

[0028] Figure 8 It is the horizontal displacement subassembly three -dimensional structure schematic diagram of the utility model.

[0029] Wherein: 1, bottom box; 2, operation box; 3, control panel; 4, box cover; 5, transverse partition; 6, upper vertical partition; 7, lower vertical partition; 8, slide rail; 9, grease feeding assembly; 10, gas distribution valve assembly; 12, support column; 13, splash guard; 14, connecting piece; 15, horizontal displacement assembly; 1501, horizontal displacement servo module; 1502, movable block; 1503, guide rail; 1504, sliding block; 16, rotary support assembly; 1601, first double-shaft air cylinder; 1602, clamping frame; 1603, rotating shaft; 1604, clamping wheel; 17, lifting screw clamping assembly; 1701, lifting driver; 1702, movable plate; 1703, connecting rod; 1704, limit block; 1705, V-shaped support block; 18, upper fixed plate; 19, grease spraying assembly; 1901, X-axis displacement servo module; 1902, first connecting block; 1903, Y-axis displacement servo module; 1904, second connecting block; 1905, grease spraying assembly; 1906, spray gun; 20, rotary clamping assembly; 2001, support plate; 2002, servo motor; 2003, turntable; 2004, second double-shaft air cylinder; 2005, pneumatic parallel gripper; 21, bolt to be processed. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0031] Embodiment one: as Figures 1-8The utility model provides a large -scale bolt lubricating grease automatic spraying device, including bottom case 1, operation box 2 and the lower vertical baffle 7 in bottom case 1 inside, the upper vertical baffle 6 in operation box 2 inside and the horizontal baffle 5 between bottom case 1 and operation box 2, the left side fixed mounting of bottom case 1's inside has slide rail 8, the inside lubricating grease feed assembly 9 of bottom case 1 is slidably installed through slide rail 8, the front side fixed mounting of lower vertical baffle 7 has gas distribution valve assembly 10, the top of horizontal baffle 5 is fixedly installed with support column 12, the end of support column 12 away from horizontal baffle 5 is fixedly installed with splash plate 13, the middle sliding of horizontal baffle 5 is installed with connecting piece 14, the upside of horizontal baffle 5 is provided with horizontal displacement component 15, the upside of connecting piece 14 is provided with rotary support component 16, the downside of connecting piece 14 is provided with lifting screw clamping component 17, the upside of horizontal baffle 5 is fixedly installed with upper fixed plate 18 at the back of upper vertical baffle 6, the upside of upper fixed plate 18 is provided with lubricating grease spraying assembly 19, the left side above horizontal baffle 5 is provided with rotary clamping component 20, and the inside rotary support component 16 is placed with the bolt to be processed 21.

[0032] Specifically, the front side of operation box 2 is provided with a control panel 3, and the front side of operation box 2 is rotatably installed with a box cover 4 away from the control panel 3. The lubricating grease feed assembly 9 and the lubricating grease spraying assembly 19 are interconnected by a hose. Advantage is that the lubricating grease in the lubricating grease feed assembly 9 can be delivered to the lubricating grease spraying assembly 1905 in the lubricating grease spraying assembly 19 through the hose during use of the device.

[0033] Specifically, the rotary support component 16 includes a first double-shaft air cylinder 1601 fixedly installed at the top end of the connecting piece 14. The movable end of the first double-shaft air cylinder 1601 is fixedly installed with a clamping frame 1602. The inside of the clamping frame 1602 is provided with a rotating shaft 1603. The outside of the rotating shaft 1603 is rotatably installed with a clamping wheel 1604. The clamping frame 1602, the rotating shaft 1603, and the rotating shaft 1603 are provided with the same two groups. The two groups of clamping frame 1602, rotating shaft 1603, and rotating shaft 1603 are symmetrically distributed about the center line of the first double-shaft air cylinder 1601. Advantage is that the first double-shaft air cylinder 1601 controls the relative movement of the two clamping frames 1602 during use. The relative movement of the two clamping frames 1602 drives the clamping wheel 1604 to clamp the bolt to be processed 21.

[0034] Specifically, the horizontal displacement assembly 15 comprises a horizontal displacement servo module 1501, the horizontal displacement servo module 1501 is fixedly installed at the top end of the transverse partition plate 5, the movable end of the horizontal displacement servo module 1501 is fixedly installed with a movable block 1502, the top end of the transverse partition plate 5 is fixedly installed with a guide rail 1503, the upper side of the guide rail 1503 is slidingly installed with a sliding block 1504, and the sliding block 1504 is fixedly connected with the lower side of the first double-shaft air cylinder 1601. Advantage is that when in use, the horizontal displacement servo module 1501 can transmit power to the connecting piece 14 through the movable block 1502 at the upper portion, drive the rotary support assembly 16 and the lifting screw clamping assembly 17 to move horizontally through the connecting piece 14, and control the horizontal movement of the to-be-processed bolt 21.

[0035] Embodiment two: as shown in the following table, as an improvement on the previous embodiment. Figures 2-8

[0036] Specifically, the lifting screw clamping assembly 17 comprises a lifting driver 1701, the lifting driver 1701 is fixedly installed at the lower side of the connecting piece 14, the movable end of the lifting driver 1701 is fixedly installed with a movable plate 1702, the top end of the movable plate 1702 is fixedly installed with a connecting rod 1703, the outer side of the connecting rod 1703 is fixedly installed with a limiting block 1704, the top end of the connecting rod 1703 is fixedly installed with a V-shaped support block 1705, the limiting block 1704 is located at both sides of the movable block 1502, and the limiting block 1704 is in plug connection with the movable block 1502. Advantage is that when in use, the lifting driver 1701 transmits power to the movable plate 1702, the movable plate 1702 transmits power to the V-shaped support block 1705 through the connecting rod 1703, the V-shaped support block 1705 can adjust the to-be-processed bolt 21, the height can be adjusted according to the specifications of the to-be-processed bolt 21, so that the height is consistent with that of the rotary clamping assembly 20.

[0037] ​Specifically, the lubricating grease spraying assembly 19 comprises an X-axis displacement servo module 1901 fixedly installed on the upper side of the upper fixed plate 18, a first connecting block 1902 fixedly installed at the movable end of the X-axis displacement servo module 1901, a Y-axis displacement servo module 1903 fixedly installed at the top end of the first connecting block 1902, a second connecting block 1904 fixedly installed at the movable end of the Y-axis displacement servo module 1903, a lubricating grease spraying assembly 1905 fixedly installed on the upper side of the second connecting block 1904, and a spray gun 1906 arranged on the front side of the lubricating grease spraying assembly 1905. The lubricating grease spraying assembly 19 is provided with two identical assemblies, and the two lubricating grease spraying assemblies 19 are symmetrically distributed about the center line of the upper fixed plate 18. When in use, the X-axis displacement servo module 1901 and the Y-axis displacement servo module 1903 cooperate with each other to enable the lubricating grease spraying assembly 1905 and the spray gun 1906 to move along the X-axis and the Y-axis, so that horizontal spraying and the spacing between the lubricating grease spraying assembly 1905, the spray gun 1906 and the bolt 21 to be processed can be realized.

[0038] Specifically, the rotary clamping assembly 20 comprises a support plate 2001 fixedly connected with the transverse partition plate 5, a servo motor 2002 fixedly installed on the side of the support plate 2001 away from the rotary support assembly 16, a turntable 2003 drivingly installed on the output shaft of the servo motor 2002, a second double-shaft air cylinder 2004 fixedly installed on the side of the turntable 2003 away from the servo motor 2002, a pneumatic parallel gripper 2005 fixedly installed at the movable end of the second double-shaft air cylinder 2004, and two identical pneumatic parallel grippers 2005 symmetrically distributed about the center line of the turntable 2003. When in use, the movable end of the second double-shaft air cylinder 2004 drives the relative movement of the pneumatic parallel gripper 2005, the two pneumatic parallel grippers 2005 clamp the bolt 21 to be processed, and after clamping, the servo motor 2002 drives the bolt 21 to be processed through the turntable 2003, the second double-shaft air cylinder 2004 and the pneumatic parallel gripper 2005, so that uniform spraying of the bolt 21 to be processed can be facilitated.

[0039] Working principle: in use, the worker opens the box cover 4, and the bolt to be processed 21 is placed in the middle of the rotating support assembly 16 inside the operation box 2, at this time, the lifting drive 1701 is opened by using the control panel 3, the lifting drive 1701 transmits power to the movable plate 1702, the movable plate 1702 transmits power to the V-shaped support block 1705 through the connecting rod 1703, the V-shaped support block 1705 can adjust the bolt to be processed 21, and the height can be adjusted according to the specification of the bolt to be processed 21, so that it is consistent with the height of the rotating clamping assembly 20, when the height of the bolt to be processed 21 is consistent with the height of the rotating clamping assembly 20, the horizontal transfer servo module 1501 can transmit power to the connecting piece 14 through the upper movable block 1502, drive the rotating support assembly 16 and the lifting screw clamping assembly 17 to move horizontally through the connecting piece 14, control the bolt to be processed 21 to move to the direction of the rotating clamping assembly 20, until the bolt to be processed 21 enters the inside of the rotating clamping assembly 20, the movable end of the second double-shaft air cylinder 2004 drives the relative movement of the pneumatic parallel gripper 2005, and the two pneumatic parallel grippers 2005 clamp the bolt to be processed 21, after clamping, the first double-shaft air cylinder 1601 controls the relative movement of the two clamping frames 1602, and the relative movement of the two clamping frames 1602 drives the clamping wheel 1604 to clamp the bolt to be processed 21, when the two groups of clamping wheels 1604 are clamped, the servo motor 2002 can drive the bolt to be processed 21 to rotate through the turntable 2003, the second double-shaft air cylinder 2004 and the pneumatic parallel gripper 2005, in the process of rotating the bolt to be processed 21, through the cooperation of the X-axis transfer servo module 1901 and the Y-axis transfer servo module 1903, the lubricating grease spraying assembly 1905 and the spray gun 1906 can move along the X-axis and Y-axis directions, which can realize horizontal spraying, and can also realize the distance between the lubricating grease spraying assembly 1905 and the spray gun 1906 and the bolt to be processed 21, the lubricating grease spraying assembly 1905 and the spray gun 1906 can spray the lubricating grease in the lubricating grease supply assembly 9 to the bolt to be processed 21, and the bolt to be processed 21 can be taken out after operation, and the overall degree of automation is high.

[0040] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A large-scale bolt grease automatic spraying device, comprising a base box (1), an operation box (2), and a lower vertical partition (7) located inside the base box (1), an upper vertical partition (6) located inside the operation box (2), and a transverse partition (5) located between the base box (1) and the operation box (2), characterized in that: A slide rail (8) is fixedly installed on the left side inside the bottom box (1). A grease supply assembly (9) is slidably installed inside the bottom box (1) via the slide rail (8). A gas distribution valve assembly (10) is fixedly installed on the front side of the lower vertical partition (7). A support column (12) is fixedly installed at the top of the horizontal partition (5). A splash guard (13) is fixedly installed at the end of the support column (12) away from the horizontal partition (5). A connector (14) is slidably installed in the middle of the horizontal partition (5). A horizontal position is provided on the upper side of the horizontal partition (5). The moving component (15) has a rotating support component (16) on the upper side of the connector (14), a lifting screw clamping component (17) on the lower side of the connector (14), an upper fixing plate (18) fixedly installed on the upper side of the transverse partition (5) on the back of the upper vertical partition (6), a grease spraying component (19) on the upper side of the upper fixing plate (18), a rotating clamping component (20) on the left side above the transverse partition (5), and a bolt (21) to be processed placed on the inner side of the rotating support component (16).

2. The automatic grease spraying device for large bolts according to claim 1, characterized in that: The control box (2) is provided with a control panel (3) on the front side. The end of the control box (2) away from the control panel (3) is rotatably installed with a box cover (4). The grease supply assembly (9) and the grease spraying assembly (19) are interconnected through a hose.

3. The automatic grease spraying device for large bolts according to claim 1, characterized in that: The rotating support assembly (16) includes a first dual-axis cylinder (1601), which is fixedly installed on the top of the connector (14). A clamping frame (1602) is fixedly installed on the movable end of the first dual-axis cylinder (1601). A rotating shaft (1603) is provided on the inner side of the clamping frame (1602), and a clamping wheel (1604) is rotatably installed on the outer side of the rotating shaft (1603). The clamping frame (1602), rotating shaft (1603) and rotating shaft (1603) are provided in two identical sets. The two sets of clamping frames (1602), rotating shafts (1603) and rotating shafts (1603) are symmetrically distributed about the center line of the first dual-axis cylinder (1601).

4. The automatic grease spraying device for large bolts according to claim 3, characterized in that: The horizontal displacement component (15) includes a horizontal transfer servo module (1501), which is fixedly installed at the top of the transverse partition (5). A movable block (1502) is fixedly installed at the movable end of the horizontal transfer servo module (1501). A guide rail (1503) is fixedly installed at the top of the transverse partition (5). A slider (1504) is slidably installed on the upper side of the guide rail (1503). The slider (1504) is fixedly connected to the lower side of the first dual-axis cylinder (1601).

5. The automatic grease spraying device for large bolts according to claim 3, characterized in that: The lifting screw clamping assembly (17) includes a lifting driver (1701), which is fixedly installed on the lower side of the connector (14). A movable plate (1702) is fixedly installed on the movable end of the lifting driver (1701). A connecting rod (1703) is fixedly installed on the top of the movable plate (1702). A limiting block (1704) is fixedly installed on the outer side of the connecting rod (1703). A V-shaped support block (1705) is fixedly installed on the top of the connecting rod (1703). The limiting block (1704) is located on both sides of the movable block (1502), and the limiting block (1704) and the movable block (1502) are connected by a plug-in connection.

6. The automatic grease spraying device for large bolts according to claim 1, characterized in that: The grease spraying assembly (19) includes an X-axis transfer servo module (1901), which is fixedly installed on the upper side of the upper fixed plate (18). A first connecting block (1902) is fixedly installed on the movable end of the X-axis transfer servo module (1901). A Y-axis transfer servo module (1903) is fixedly installed on the top of the first connecting block (1902). A second connecting block (1904) is fixedly installed on the movable end of the Y-axis transfer servo module (1903). A grease spraying assembly (1905) is fixedly installed on the upper side of the second connecting block (1904). A spray gun (1906) is provided on the front side of the grease spraying assembly (1905). Two identical grease spraying assemblies (19) are provided, and the two grease spraying assemblies (19) are symmetrically distributed about the center line of the upper fixed plate (18).

7. The automatic grease spraying device for large bolts according to claim 1, characterized in that: The rotating clamping assembly (20) includes a support plate (2001), which is fixedly connected to the transverse partition (5). A servo motor (2002) is fixedly installed on the side of the support plate (2001) away from the rotating support assembly (16). A turntable (2003) is driven on the output shaft of the servo motor (2002). A second dual-axis cylinder (2004) is fixedly installed on the side of the turntable (2003) away from the servo motor (2002). A pneumatic parallel gripper (2005) is fixedly installed on the movable end of the second dual-axis cylinder (2004). Two identical pneumatic parallel grippers (2005) are provided, and the two pneumatic parallel grippers (2005) are symmetrically distributed about the center line of the turntable (2003).

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