CN115930748A

CN115930748A - Nut straightness check out test set that hangs down

Info

Publication number: CN115930748A
Application number: CN202211606246.4A
Authority: CN
Inventors: 袁明亮; 陈晨; 沈贝萍
Original assignee: Zhejiang Cowin Fastech Co ltd
Current assignee: Zhejiang Cowin Fastech Co ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-04-07
Anticipated expiration: 2042-12-12
Also published as: CN115930748B

Abstract

The invention discloses a nut verticality detection device which comprises a machine body, wherein a track is fixedly connected to the machine body, a sliding block is connected to the track in a sliding mode, a first conical block is connected to the sliding block in a rotating mode, an adjustable adjusting block is fixedly connected to the track, a driving piece is connected to the adjusting block, and a second conical block is connected to the driving piece; the fixing component is used for fixing the nut and is installed between the first conical block and the second conical block and comprises a pipe body, the outer surface of the pipe body is connected with an air bag, the fixing component extrudes and fixes the nut through expansion of the air bag, the nut verticality detection equipment is provided with the fixing component, and therefore the problem that in the prior art, the nut can only be fixed to the nut of a fixed specification through a single fixing device when the verticality is detected is solved.

Description

Nut straightness check out test set that hangs down

Technical Field

The invention relates to the technical field of nut verticality detection, in particular to nut verticality detection equipment.

Background

The nut is a nut, and is a part which is screwed together with a bolt or a screw rod to play a role in fastening, an element which is necessary for all production and manufacturing machines is divided into carbon steel, stainless steel, nonferrous metal (such as copper) and the like according to different materials, and the nut is a part which is commonly used in the mechanical production.

At present, some accurate devices require highly to the precision of nut, especially the straightness that hangs down of the flange face and the central screw hole of nut, therefore need carry out the measurement of precision to the nut, and detect the straightness that hangs down of nut through beat deflection detector among the prior art, cooperation percentage table uses the nut hole to detect the beating of nut terminal surface as the center after the nut is fixed, and can only detect the nut of single specification to the fixing device of nut among the prior art, fixing device can not adapt the nut of multiple specification, consequently, it is comparatively inconvenient to use, and after the nut detects the completion, generally need take down the nut on the fixing device through artifical manual, consequently, the waste time increases, thereby make detection efficiency reduce. Therefore, the nut verticality detection device is provided.

Disclosure of Invention

The invention aims to provide a nut verticality detection device to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a nut verticality detection device comprises a machine body, wherein a track is fixedly connected to the machine body, a sliding block is connected to the track in a sliding mode, a first conical block is connected to the sliding block in a rotating mode, an adjustable adjusting block is fixedly connected to the track, a driving piece is connected to the adjusting block, and a second conical block is connected to the driving piece; the fixing assembly is used for fixing a nut and is arranged between the first conical block and the second conical block, the fixing assembly comprises a pipe body, the outer surface of the pipe body is connected with an air bag, a plurality of groups of steel sheets are fixedly connected to the outer surface of the air bag, and the fixing assembly enables the steel sheets to expand through expansion of the air bag so as to extrude and fix the nut; the blanking assembly is used for unloading the nuts on the fixed assembly and is installed in the adjusting block, the blanking assembly comprises a first supporting block and a second supporting block which are arranged in a contact mode through the driving piece, the first supporting block and the second supporting block are connected with the adjusting block in a sliding mode, the blanking assembly drives the fixed assembly to perform blanking on the nuts in an inclined mode through the sliding of the first supporting block and the second supporting block, and the nuts of various specifications are favorably fixed.

Preferably, the fixing component includes a connecting block in contact with the first conical block, a groove adapted to the first conical block is formed in an axis of the connecting block, the connecting block is fixedly connected to the tube body, a plurality of groups of connecting pipes communicated with the air bag are communicated with the tube body, a piston plate is slidably connected to the tube body, and a pushing member is connected to the piston plate to facilitate fixing of a nut.

Preferably, the pushing part comprises a push rod fixedly connected with the piston sheet, the push rod is connected with a reciprocating screw rod in an internal thread manner, and one end of the reciprocating screw rod is connected with a rotating part connected with the driving part, so that the piston sheet can be pushed to move conveniently.

Preferably, the driving piece includes with the regulating block rotates the sleeve pipe of connecting, just the swing groove has been seted up on the regulating block, the sleeve pipe is installed in the swing inslot, the intraductal rotation of cover be connected with second toper piece fixed connection's axis of rotation, just sheathed tube surface fixed connection have with the fixed axle that the regulating block rotated the connection, just the other end fixedly connected with crank of axis of rotation is convenient for drive second toper piece and rotates.

Preferably, the rotating part comprises a rotating handle, one end of the rotating handle is fixedly connected with a first connecting shaft extending to the second taper block, one end of the first connecting shaft is connected with a rotation limiting part installed in the second taper block, the rotation limiting part is connected with a second connecting shaft fixedly connected with the reciprocating screw rod, the second connecting shaft is connected with the second taper block and the rotating shaft in a rotating mode, and the outer surface of the first connecting shaft is connected with a limiting part installed in the rotating shaft, so that the reciprocating screw rod can be driven to rotate.

Preferably, the rotation limiting member includes a ratchet gear fixedly connected to the first connecting shaft, one end of the ratchet gear is rotatably connected to a rotating disc fixedly connected to the second connecting shaft, a pawl is engaged with the outer side of the ratchet gear, a first spring is fixedly connected to the outer surface of the pawl, and one end of the first spring is fixedly connected to a fixing block fixedly connected to the rotating disc, so as to control the rotation of the second connecting shaft.

Preferably, the locating part is including being fixed in the first connecting axle outside just is located turning block in the axis of rotation, the turning block with the axis of rotation is rotated and is connected, just the sliding tray has been seted up in the turning block, fixedly connected with second spring in the sliding tray, the top fixedly connected with slip post of second spring, the top of slip post rotate be connected with axis of rotation swing joint's ball, set up in the axis of rotation with the ball groove of ball looks adaptation is favorable to spacing first connecting axle.

Preferably, the blanking assembly comprises a first rack fixedly connected with the first supporting block, a flat gear is meshed with the outer side of the first rack, the axis of the flat gear is fixedly connected with a rotating column which is rotatably connected with the adjusting block, a second rack fixedly connected with the second supporting block is meshed with the outer side of the flat gear, and a pressing piece is connected onto the second rack and is favorable for sliding of a nut, so that a next group of nuts can be conveniently detected.

Preferably, the pressing piece includes with second rack fixed connection's spliced pole, the top of spliced pole extends to the outside of regulating block, just the spliced pole with regulating block sliding connection, the top fixedly connected with of spliced pole presses the briquetting, press the bottom fixedly connected with of briquetting with regulating block fixed connection's third spring is favorable to driving the removal of second rack.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the fixing component is arranged, so that when the verticality of the nut is detected, the nut needs to be fixed, the nut is firstly sleeved on the outer surface of the steel sheet in the fixing process, the rotating handle is rotated at the moment, the first connecting shaft is further driven to rotate, the ratchet gear is further driven to rotate, the rotating disc is driven to rotate under the action of the pawl, the second connecting shaft is further driven to rotate under the drive of the pawl, the reciprocating screw rod is further driven to rotate, the push rod is further driven to move, the piston sheet is driven to move, the gas in the pipe body is further extruded into the connecting pipe, the gas is further conveyed into the gas bag under the action of the connecting pipe, the gas bag is further expanded, the steel sheet is further diffused outwards, the nut is further extruded and fixed, the nuts of different specifications can be fixed through the expansion of the gas bag, and the problem that only a single fixing device can fix the nuts of the fixed specifications when the verticality is detected by the nut in the prior art is solved.

2. According to the invention, the blanking assembly is arranged, so that after detection is finished, the sliding block is reversely moved, the crank is reversely rotated at the moment, the first connecting shaft is driven to rotate by the action of the balls and the ball grooves, the ratchet gear is driven to rotate by the rotation of the first connecting shaft at the moment, the rotating disc is driven to rotate by the rotation of the first connecting shaft, the reciprocating screw rod is driven to rotate, the push rod is driven to reversely move, the piston sheet is driven to reversely move, the air bag is deflated, and the nut is loosened.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of an adjusting block according to the present invention;

FIG. 3 is a schematic view of a fixing assembly according to the present invention;

FIG. 4 is a schematic view of the structure of the area A in FIG. 3 according to the present invention;

FIG. 5 is a schematic view of the structure of region B in FIG. 3 according to the present invention;

FIG. 6 is a partial schematic view of a fixing assembly according to the present invention;

FIG. 7 is a schematic view of the structure of region C in FIG. 6 according to the present invention;

FIG. 8 is a schematic view of the structure of the blanking assembly of the present invention;

FIG. 9 is a schematic view of a partial structure of the blanking assembly of the present invention;

FIG. 10 is a schematic view of the structure of region D in FIG. 9 according to the present invention;

FIG. 11 is a schematic view of a connection structure of the first connecting shaft and the rotating shaft according to the present invention;

FIG. 12 is a schematic view of the structure of region E in FIG. 11 according to the present invention.

In the figure: 1-body; 2-a slide rail; 3-a sliding block; 4-a first conical block; 5-an adjusting block; 6-second tapered block; 7-a drive member; 8-a fixed component; 9-a pipe body; 10-air bag; 11-a blanking assembly; 12-a first support block; 13-a second support block; 14-connecting blocks; 15-a groove; 16-a connecting tube; 17-steel sheet; 18-a piston plate; 19-a pusher; 20-a push rod; 21-reciprocating screw rod; 22-a rotating member; 23-a sleeve; 24-a wobbled groove; 25-a fixed shaft; 26-a rotating shaft; 27-a crank; 28-rotating the handle; 29-a first connecting shaft; 30-rotation limiting piece; 31-a second connecting shaft; 32-a limit stop; 33-ratchet gear; 34-a rotating disc; 35-a pawl; 36-a first spring; 37-fixed block; 38-a second rack; 39-spur gear; 40-rotating the column; 41-a first rack; 42-a press; 43-connecting column; 44-pressing block; 45-a third spring; 46-a sliding groove; 47-a second spring; 48-a sliding post; 49-a ball; 50-a ball groove; 51-turning block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-12, the present invention provides a technical solution: a nut verticality detection device comprises a machine body 1 used for detecting nut verticality, wherein the machine body 1 is a runout deflection instrument, a track is fixedly connected to the machine body 1 through a fixing screw, a sliding block 3 is connected to the track in a sliding mode, a first conical block 4 is connected to the sliding block 3 in a rotating mode, an adjustable adjusting block 5 is fixedly connected to the track, a driving piece 7 is connected to the adjusting block 5, and a second conical block 6 is connected to the driving piece 7; the second conical block 6 is driven to rotate under the action of a driving piece 7, and then the first conical block 4 is driven to rotate under the action of a fixing component 8, the driving piece 7 comprises a sleeve 23 which is rotatably connected with the adjusting block 5, a fixing shaft 25 which is rotatably connected with the adjusting block 5 is fixedly connected to the outer surface of the sleeve 23, a rotating shaft 26 which is fixedly connected with the second conical block 6 is rotatably connected to the sleeve 23, a swinging groove 24 which is matched with the rotating shaft 26 is formed in the adjusting block 5, and a crank 27 is fixedly connected to the other end of the rotating shaft 26; the fixing assembly 8 is used for fixing a nut, the fixing assembly 8 is installed between the first conical block 4 and the second conical block 6, the fixing assembly 8 comprises a pipe body 9, an air bag 10 is connected to the outer surface of the pipe body 9, a plurality of groups of steel sheets 17 are fixedly connected to the outer surface of the air bag 10, and the fixing assembly 8 enables the steel sheets 17 to expand through expansion of the air bag 10 so as to extrude and fix the nut; when the nut is detected, the nut is fixed under the action of a fixing component 8, and then the verticality of the nut is detected through the machine body 1, wherein the fixing component 8 comprises a connecting block 14 which is in contact with the first conical block 4, the axis of the connecting block 14 is provided with a groove 15 matched with the first conical block 4, the connecting block 14 is fixedly connected with the pipe body 9, the pipe body 9 is communicated with a plurality of groups of connecting pipes 16 communicated with the air bag 10, the outer surface of the air bag 10 is fixedly connected with a plurality of groups of steel sheets 17, the pipe body 9 is connected with a piston sheet 18 in a sliding manner, and the piston sheet 18 is connected with a pushing piece 19; the blanking assembly 11 is used for dismounting the blanking assembly 11 of the nut on the fixing assembly 8 and is arranged in the adjusting block 5, the blanking assembly 11 comprises a first supporting block 12 and a second supporting block 13 which are arranged in contact with the driving piece 7, the first supporting block 12 and the second supporting block 13 are both in sliding connection with the adjusting block 5, and the blanking assembly 11 drives the fixing assembly 8 to incline through the sliding of the first supporting block 12 and the second supporting block 13 so as to blank the nut; after the nut detects the completion, make the slope of fixed subassembly 8 through the effect of unloading subassembly 11 to make the nut landing, unloading subassembly 11 include with first rack 41 of first supporting block 12 fixed connection, the outside meshing of first rack 41 has spur gear 39, spur gear 39's axle center fixedly connected with regulating block 5 rotates the rotation post 40 of connecting, just the outside meshing of spur gear 39 have with second supporting block 13 fixed connection's second rack 38, be connected with pressing piece 42 on the second rack 38.

The pushing part 19 comprises a push rod 20 fixedly connected with the piston sheet 18, a reciprocating screw rod 21 is connected with the push rod 20 in a threaded manner, and one end of the reciprocating screw rod 21 is connected with a rotating part 22 connected with the driving part 7.

The rotating part 22 comprises a rotating handle 28, one end of the rotating handle 28 is fixedly connected with a first connecting shaft 29 extending into the second taper block 6, one end of the first connecting shaft 29 is connected with a rotation limiting part 30 installed in the second taper block 6, the rotation limiting part 30 is connected with a second connecting shaft 31 fixedly connected with the reciprocating screw rod 21, the second connecting shaft 31 is rotatably connected with the second taper block 6 and the rotating shaft 26, and the outer surface of the first connecting shaft 29 is connected with a limiting part 32 installed in the rotating shaft 26.

The rotation limiting member 30 includes a ratchet gear 33 fixedly connected to the first connecting shaft 29, one end of the ratchet gear 33 is rotatably connected to a rotating disc 34 fixedly connected to the second connecting shaft 31, a pawl 35 is engaged with an outer side of the ratchet gear 33, an outer surface of the pawl 35 is fixedly connected to a first spring 36, and one end of the first spring 36 is fixedly connected to a fixing block 37 fixedly connected to the rotating disc 34.

The limiting member 32 includes a rotating block 51 fixed outside the first connecting shaft 29 and located inside the rotating shaft 26, the rotating block 51 is rotatably connected to the rotating shaft 26, a sliding groove 46 is formed in the rotating block 51, a second spring 47 is fixedly connected inside the sliding groove 46, a sliding column 48 is fixedly connected to the top end of the second spring 47, a ball 49 movably connected to the rotating shaft 26 is rotatably connected to the top end of the sliding column 48, and a ball groove 50 adapted to the ball 49 is formed in the rotating shaft 26.

The pressing piece 42 comprises a connecting column 43 fixedly connected with the second rack 38, the top end of the connecting column 43 extends to the outer side of the adjusting block 5, the connecting column 43 is connected with the adjusting block 5 in a sliding mode, the top end of the connecting column 43 is fixedly connected with a pressing block 44, and the bottom end of the pressing block 44 is fixedly connected with a third spring 45 fixedly connected with the adjusting block 5.

When the verticality of the nut is detected, the nut needs to be fixed, the nut is firstly sleeved on the outer surface of the steel sheet 17 in the fixing process, at this time, the rotating handle 28 is rotated to further drive the first connecting shaft 29 to rotate, so that the ratchet wheel 33 is driven to rotate, at this time, the pawl 35 can drive the rotating disc 34 to rotate, so that the second connecting shaft 31 is driven to rotate, so that the reciprocating screw rod 21 is driven to rotate, so that the push rod 20 is driven to move, so that the piston sheet 18 is driven to move, so that the gas in the pipe body 9 is extruded into the connecting pipe 16, so that the gas is conveyed into the air bag 10 through the action of the connecting pipe 16, so that the air bag 10 is expanded, so that the steel sheet 17 is diffused outwards, so that the nut is extruded and fixed, because the air bag 10 has elasticity, so that nuts of different specifications can be fixed through the expansion of the air bag 10, and therefore, the problem that in the prior art, when the nut is detected in the verticality, a single fixing device can only fix the nuts of the fixed specifications of the nuts is solved.

After the fixing is finished, the sliding block 3 is moved, the sliding block drives the first conical block 4 to move, the first conical block 4 corresponds to the groove 15, the connecting block 14 and the pipe body 9 are extruded, the pipe body 9 is in a horizontal state at the moment, the crank 27 is rotated at the moment, the rotating direction is opposite to that of the crank 28, at the moment, due to the effects of the balls 49 and the ball grooves 50, the rotating block 51 is driven to rotate when the crank 27 rotates to drive the rotating shaft 26 to rotate, the rotating shaft 26 is driven to rotate, the ratchet wheel 33 is driven to rotate, at the moment, the rotating disc 34 is not driven to rotate due to the fact that the rotating direction of the first connecting shaft 29 is opposite, the reciprocating screw rod 21 cannot rotate at the moment, the second conical block 6 is driven to rotate in the rotating process of the rotating shaft 26, the pipe body 9 is driven to rotate, the air bag 10 and the steel sheet 17 are driven to rotate, the nut is driven to rotate, and the dial indicator arranged on the machine body 1 is matched to detect the bounce of the end face of the nut by taking the inner hole as the center, and whether the nut is vertical or not detected by reading of the dial indicator.

After the detection is completed, by moving the sliding block 3 in the reverse direction, at this time, by rotating the crank 27 in the reverse direction, at this time, the crank 27 will drive the first connecting shaft 29 to rotate due to the action of the balls 49 and the ball grooves 50, and at this time, the first connecting shaft 29 will rotate to drive the ratchet wheel 33 to rotate, thus driving the rotating disc 34 to rotate, thus driving the reciprocating screw 21 to rotate, thereby driving the push rod 20 to move in the reverse direction, thus driving the piston plate 18 to move in the reverse direction, thereby deflating the air bag 10, thus shrinking the air bag 10, and thus loosening the nut, at this time, by pressing the pressing block 44, the pressing block 44 will drive the connecting column 43 to move, thus driving the second rack 38 to move, and then driving the flat gear 39 to rotate, thus driving the first rack 41 to move, and the second rack 38 to move in the direction opposite to the moving direction of the first rack 41, thus driving the rotating shaft 26 to incline, thereby facilitating the nut to fall, and after the pressing the nut 44 moves, the second rack 38 moves down, thus facilitating the detection of the first rack 41 and the nut 38 to return to the nut to the horizontal position, thereby facilitating the detection.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A nut squareness detection apparatus includes: the device comprises a machine body (1), wherein a track is fixedly connected to the machine body (1), a sliding block (3) is connected to the track in a sliding manner, a first conical block (4) is connected to the sliding block (3) in a rotating manner, an adjustable adjusting block (5) is fixedly connected to the track, a driving piece (7) is connected to the adjusting block (5), and a second conical block (6) is connected to the driving piece (7); it is characterized by also comprising: the fixing assembly (8) is used for fixing a nut, the fixing assembly (8) is installed between the first conical block (4) and the second conical block (6), the fixing assembly (8) comprises a pipe body (9), an air bag (10) is connected to the outer surface of the pipe body (9), a plurality of groups of steel sheets (17) are fixedly connected to the outer surface of the air bag (10), and the steel sheets (17) are expanded through expansion of the air bag (10) by the fixing assembly (8) so as to extrude and fix the nut;

unloading subassembly (11), be used for dismantling fixed subassembly (8) upper nut unloading subassembly (11) install in regulating block (5), just unloading subassembly (11) include with first supporting shoe (12) and second supporting shoe (13) that driving piece (7) contact set up, first supporting shoe (12) with second supporting shoe (13) all with regulating block (5) sliding connection, thereby unloading of unloading subassembly (11) through the slip drive of first supporting shoe (12) and second supporting shoe (13) thereby fixed subassembly (8) slope is to the nut unloading.

2. The nut verticality detection device according to claim 1, characterized in that: the fixing assembly (8) comprises a connecting block (14) which is in contact with the first conical block (4), a groove (15) matched with the first conical block (4) is formed in the axis of the connecting block (14), the connecting block (14) is fixedly connected with the pipe body (9), a plurality of groups of connecting pipes (16) communicated with the air bag (10) are communicated with the pipe body (9), a piston sheet (18) is connected in the pipe body (9) in a sliding mode, and a pushing piece (19) is connected to the piston sheet (18).

3. The nut verticality detection device according to claim 2, characterized in that: the pushing piece (19) comprises a pushing rod (20) fixedly connected with the piston piece (18), a reciprocating screw rod (21) is connected with the pushing rod (20) in an internal thread mode, and one end of the reciprocating screw rod (21) is connected with a rotating piece (22) connected with the driving piece (7).

4. The nut verticality detection device according to claim 3, characterized in that: the driving piece (7) comprises a sleeve (23) which is rotatably connected with the adjusting block (5), a swing groove (24) is formed in the adjusting block (5), the sleeve (23) is installed in the swing groove (24), a rotating shaft (26) is fixedly connected with the second taper block (6) in the sleeve (23), the outer surface of the sleeve (23) is fixedly connected with a fixing shaft (25) which is rotatably connected with the adjusting block (5), and a crank (27) is fixedly connected with the other end of the rotating shaft (26).

5. The nut verticality detection device according to claim 4, characterized in that: the rotating part (22) comprises a rotating handle (28), one end of the rotating handle (28) is fixedly connected with a first connecting shaft (29) extending into the second taper block (6), one end of the first connecting shaft (29) is connected with a rotation limiting part (30) installed in the second taper block (6), a second connecting shaft (31) fixedly connected with the reciprocating screw rod (21) is connected onto the rotation limiting part (30), the second connecting shaft (31) is connected with the second taper block (6) and the rotating shaft (26) in a rotating mode, and the outer surface of the first connecting shaft (29) is connected with a limiting part (32) installed in the rotating shaft (26).

6. The nut verticality detection device according to claim 5, characterized in that: the rotation limiting piece (30) comprises a ratchet gear (33) fixedly connected with the first connecting shaft (29), one end of the ratchet gear (33) is rotatably connected with a rotating disc (34) fixedly connected with the second connecting shaft (31), a pawl (35) is meshed with the outer side of the ratchet gear (33), a first spring (36) is fixedly connected to the outer surface of the pawl (35), and a fixing block (37) fixedly connected with the rotating disc (34) is fixedly connected to one end of the first spring (36).

7. The nut verticality detection device according to claim 5, characterized in that: the limiting part (32) comprises a rotating block (51) which is fixed to the outer side of the first connecting shaft (29) and located in the rotating shaft (26), the rotating block (51) is rotatably connected with the rotating shaft (26), a sliding groove (46) is formed in the rotating block (51), a second spring (47) is fixedly connected in the sliding groove (46), a sliding column (48) is fixedly connected to the top end of the second spring (47), a ball (49) which is movably connected with the rotating shaft (26) is rotatably connected to the top end of the sliding column (48), and a ball groove (50) matched with the ball (49) is formed in the rotating shaft (26).

8. The nut verticality detection device according to claim 1, characterized in that: the blanking assembly (11) comprises a first rack (41) fixedly connected with the first supporting block (12), a flat gear (39) is meshed with the outer side of the first rack (41), the axis of the flat gear (39) is fixedly connected with a rotating column (40) rotatably connected with the adjusting block (5), a second rack (38) fixedly connected with the second supporting block (13) is meshed with the outer side of the flat gear (39), and a pressing piece (42) is connected onto the second rack (38).

9. The nut verticality detection device according to claim 8, characterized in that: the pressing piece (42) comprises a connecting column (43) fixedly connected with the second rack (38), the top end of the connecting column (43) extends to the outer side of the adjusting block (5), the connecting column (43) is in sliding connection with the adjusting block (5), the top end of the connecting column (43) is fixedly connected with a pressing block (44), and the bottom end of the pressing block (44) is fixedly connected with a third spring (45) fixedly connected with the adjusting block (5).