A double-bolt distribution type bolt screening machine

Abstract

The present invention provides a double-bolt distribution type bolt screening machine, which relates to bolt assembly auxiliary equipment, including a material unloading structure for unloading and a material distribution structure for arranging and distributing bolts to two workstations. The material distribution structure and the material unloading structure are connected together by a connecting bridge. The bolts on the two workstations slide down to the end of the slideway under the drive of the grabbing structure. In the present invention, the material unloading structure is used to flatten and adjust the bolts, and the adjusted bolts are moved to the material distribution structure through the connecting bridge. The material distribution structure has double workstations, which is more suitable for the construction environment of steel rails and is convenient to use. Furthermore, elastic parts are arranged at the ends of the two slide rails, so that the slideway will not be damaged when the grabbing structure is tightened downward.

Description

Technical Field

[0001] The invention relates to bolt assembly auxiliary equipment, in particular to a double-bolt distribution type bolt screening machine. Background Art

[0002] Bolts are fasteners that are used in conjunction with nuts and include a screw head at the top and a screw rod on the screw head. Bolts are used in large quantities in the laying of new tracks and track replacement. Workers have to manually pick up bolts, which not only consumes a lot of manpower and material resources, but also injures their hands when sorting out the bolts.

[0003] Although there are mechanical structures for arranging the cutting bolts, such structures are often complicated and can only arrange the cutting in a single line, which is not suitable for track construction operations, has low efficiency, and is often prone to unsmooth cutting due to the complex structure. Summary of the invention

[0004] The invention provides a double-bolt distribution type bolt screening machine, which aims to solve the problem that the existing mechanical structure can only discharge materials through a single line and the discharge is not smooth.

[0005] In order to achieve the above object, an embodiment of the present invention provides a double-bolt distribution type bolt screening machine, comprising:

[0006] The material discharge structure comprises a cylindrical material discharge barrel, the top of which is open, and the side wall is provided with a discharge port, a rotatable tray is provided in the material discharge barrel, the tray is used to carry bolts, and a shifting block is provided on the inner wall of the material discharge barrel, and the shifting block is provided above the tray;

[0007] The cam is an angular channel that is configured to move the first and second cams together to form a circle, the circle being a horizontal channel that is configured to move the first and second cams together to form a circle.

[0008] A rotatable gripping structure, wherein the start end of the slideway is located within the rotation range of the gripping structure to grip the bolt;

[0009] The connecting bridge has one end connected to the discharge port and tangent to the side wall of the lower barrel, and the other end connected to a side of the bearing plate away from the baffle plate. The discharge port and the bearing plate are located in the same horizontal plane.

[0010] Preferably, the unloading structure also includes a screening component, which is fan-shaped, arranged above the tray and below the shifting block, fixed to the inner wall of the unloading barrel, and provided with a slope in the opposite direction of rotation of the tray. The screening component is also provided with a first shifting pin and a second shifting pin, the first shifting pin is arranged near the center of the screening component, and the second shifting pin is arranged near the inner wall of the unloading barrel, and the distance between the first shifting pin and the second shifting pin is greater than the length of the bolt.

[0011] Preferably, the distribution crank also includes a first crank, a second crank and a crank motor, one end of the first crank is rotatably connected to the movable part, and the other end is rotatably connected to the second crank, the other end of the second crank is connected to the crank motor, and the crank motor drives the movable part to perform linear reciprocating motion.

[0012] Preferably, the movable part includes side panels arranged parallel to the left and right and a horizontal panel fixedly connected to the side panels, the distance between the two side panels is the width of a screw head, the side panel close to the first through slot is the height of a screw head, the side panel close to the second through slot is the height of two screw heads, and the two side panels are flush from the bottom ends.

[0013] Preferably, a blocking assembly is provided on the blocking plate, and the blocking assembly includes a main body, the main body has a cavity, a tongue is provided in the cavity, a supporting column is provided on the side of the tongue facing the supporting plate, a guide column is provided on the side of the tongue away from the supporting plate, a spring is provided between the guide column and the inner wall of the main body, the supporting column can abut against the side of the supporting plate, and the tongue is located on the movement path of the movable part.

[0014] Preferably, the support assembly comprises a hollow cavity, in which at least one group of positioning beads is arranged, the positioning beads are arranged facing each other, and the positioning beads abut against the hollow cavity through springs.

[0015] Preferably, the distance between the two hollow cavities is greater than the width of the screw head, and the distance between the two groups of positioning beads is less than the width of the bolt.

[0016] Preferably, the double-bolt distribution type bolt screening machine also includes a bracket, a bottom end of the bracket is provided with a running structure, and the unloading structure, the material distribution structure and the grabbing structure are arranged on the bracket.

[0017] Preferably, the grabbing structure comprises: a lifting assembly, a rotating assembly and a transmission assembly;

[0018] The lifting assembly comprises a top plate, the top plate is provided with a lead screw passing through the top plate, the lead screw is screwed with a sliding bottom plate, the lower end surface of the sliding bottom plate is provided with an electric wrench, and the rotation of the lead screw drives the sliding bottom plate to move up and down;

[0019] The rotating assembly includes two parallel side plates, the upper end of each side plate is fixedly connected to the top plate, the bottom end of each side plate is provided with a rotating shaft, at least one rotating shaft is provided with a non-circular gear and a driving gear shaft meshing with the non-circular gear;

[0020] The transmission assembly is arranged on the sliding bottom plate, and includes a driving gear, a first gear, a second gear and a third gear. The first gear is meshed with the driving gear, the first gear and the third gear are connected by a gear shaft, the third gear is meshed with the second gear, and the second gear is transmission-connected to the main shaft of the electric wrench.

[0021] The above scheme of the present invention has the following beneficial effects:

[0022] In the present invention, a material discharging structure is used to flatten and adjust the bolts, and the adjusted bolts are moved to the material distributing structure through the connecting bridge. The material distributing structure has a double working station and is more suitable for the construction environment of the slide rail. Driven by the grabbing structure, the bolts rotate along the slide rail to the end of the slide rail for easy access. Furthermore, elastic parts are provided at the ends of the two slide rails, and the grabbing structure can tighten the bolts on the elastic part without taking out the bolts. It is convenient and fast with strong linkage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is the overall schematic diagram of the present invention

[0024] Figure 2 It is a schematic diagram of the material cutting structure and the material distribution structure;

[0025] Figure 3 It is a schematic diagram of the material cutting structure;

[0026] Figure 4 It is a schematic diagram of the fabric structure;

[0027] Figure 5 yes Figure 4 A magnified schematic diagram of part A;

[0028] Figure 6 is another schematic diagram of the fabric structure;

[0029] Figure 7 It is a structural diagram of the grasping structure.

[0030] [Description of Reference Numerals]

[0031] 1-feeding structure, 11-feeding barrel, 12-tray, 13-pulsator, 14-shifting block, 15-screening assembly, 16-slope, 17-first shifting pin, 18-second shifting pin,

[0032] 2-fabric structure, 21-carrying plate, 22-blocking plate, 23-supporting plate, 24-first through slot, 25-second through slot, 26-distribution crank, 261-movable part, 262-first crank, 263-second crank,

[0033] 27-support assembly, 271-cavity, 272 positioning beads,

[0034] 28-slideway, 281-slide rail,

[0035] 29-blocking assembly, 291-body, 292-tongue, 293-supporting column, 294-guide column,

[0036] 3-grabbing structure, 31-lifting assembly, 311-top plate, 312-screw, 313-sliding bottom plate, 314-electric wrench, 32-rotating assembly, 321-side plate, 322-rotating shaft, 323-driving gear shaft, 33-transmission assembly, 331-driving gear, 332-first gear, 333-second gear, 334-third gear,

[0037] 4- Access bridge. DETAILED DESCRIPTION

[0038] In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0039] like Figure 1-7 As shown, an embodiment of the present invention provides a double-bolt distribution type bolt screening machine, including a bracket, a running structure is arranged at the bottom end of the bracket, and the running structure is realized by means of existing technology. A material discharging structure 1, a material distributing structure 2, a grabbing structure 3 and a receiving bridge 4 are also arranged on the bracket.

[0040] The material discharge structure 1 includes a cylindrical material discharge barrel 11, the top of which is open, and a rotatable tray 12 is provided at the bottom. In the present embodiment, a pulsator 13 is also provided at the bottom of the material discharge barrel 11, and the pulsator 13 and the tray 12 are fixedly provided, and the pulsator 13 can drive the tray 12 to rotate. The rotation of the pulsator 13 is realized by a pulsator motor (not shown in the figure). The pulsator 13 and the tray 12 are both circular. The tray 12 is used to place bolts. The area between the pulsator 13 and the material discharge barrel 11 is used as an area for storing bolts. Preferably, the difference between the radius of the material discharge barrel 11 and the radius of the pulsator 13 is equal to or slightly greater than the length of the screw, so as to prevent the screw from getting stuck when rotating with the push plate.

[0041] Furthermore, a shifting block 14 is provided on the inner wall of the discharge barrel 11, and the shifting block 14 is provided above the tray 12. Preferably, the distance between the shifting block 14 and the tray 12 is greater than the width of the screw head. In practical operation, the distance between the shifting block 14 and the tray 12 is generally 1.1-1.2 times the width of the screw head, which can ensure that the shifting block 14 can collide with the misplaced bolts, and that the bolts arranged in compliance can pass through the shifting block 14 smoothly without collision. Compliance in arrangement means that the screw head is away from the center of the tray 12, and the bolts are arranged radially along the tray 12.

[0042] In order to further arrange the bolts in compliance, the unloading structure 1 also includes a screening component 15, which is arranged in the unloading barrel 11 and is located above the tray 12 by about the width of a screw rod, and the screening component 15 is lower than the shifting block 14. The screening component 15 is approximately fan-shaped. In this embodiment, the screening component 15 is arranged on the inner wall of the unloading barrel 11, and the screening component 15 is provided with a slope 16 in the opposite direction of the rotation of the tray 12. The side of the slope 16 close to the impeller 13 is tangent to the impeller 13, and the side away from the impeller 13 is provided with a notch, which is used to pass the screw head. The function of the slope 16 is to push the non-compliant bolts through the tray 12 to the screening component 15. More optimally, the upper end surface of the screening component 15 is also provided with a first shifting pin 17 and a second shifting pin 18. The first shifting pin 17 is arranged near the center of the screening component 15, and the second shifting pin 18 is arranged near the inner wall of the unloading barrel 11. The distance between the first shifting pin 17 and the second shifting pin 18 is greater than the length of the bolt. The non-compliant bolts moved up through the slope 16 collide with the first and second push pins 17 and 18 to change their positions and directions, thereby playing a role of regulation.

[0043] The aforementioned material distribution structure 2 includes a bearing plate 21, which is used to bear bolts. The bearing plate 21 is connected to the lower barrel 11 through a connecting bridge 4. Specifically, the side wall of the lower barrel 11 is provided with a discharge port for pushing out the compliant bolts. The connecting bridge 4 is arranged at the discharge port, connected and tangent to the side wall of the lower barrel 11. The connecting bridge 4 is preferably made of a plate to ensure that the bottom end of the discharge port is in the same horizontal plane as the bearing plate 21. It should be emphasized that the position of the discharge port should be lower than the screening component 15.

[0044] As mentioned above, the cloth structure 2 also includes a baffle plate 22, which is arranged on the side of the carrier plate 21 away from the access bridge 4, and the baffle plate 22 is spaced apart from the carrier plate 21. A support plate 23 is arranged below the carrier plate 21, and a first through slot 24 and a second through slot 25 are arranged on the support plate 23. The first through slot 24 is located directly below the gap formed by the baffle plate 22 and the carrier plate 21, and the second through slot 25 is arranged parallel to the first through slot 24 to realize a double station. A distribution crank 26 is also arranged on the support plate 23, and the distribution crank 26 includes a movable part 261, and the movable part 261 performs linear reciprocating motion between the first through slot 24 and the second through slot 25.

[0045] The aforementioned distribution crank 26 includes a first crank 262, a second crank 263 and a crank motor (not shown in the figure). One end of the first crank 262 is rotatably connected to the movable part 261, and the other end is rotatably connected to the second crank 263. The other end of the second crank 263 is connected to the crank motor. The crank motor drives the second crank 263 to perform circular motion and then drives the movable part 261 to perform linear reciprocating motion on the support plate 23.

[0046] The aforementioned movable part 261 includes side panels 321 arranged in parallel on the left and right and a horizontal panel fixedly connected to the side panels 321. In this embodiment, the distance between the two side panels 321 is approximately the width of a screw head, the height of the side panel 321 close to the first through slot 24 is approximately the height of a screw head, and the height of the side panel 321 close to the second through slot 25 is approximately the height of two screw heads.

[0047] A support assembly 27 is provided in both the first through slot 24 and the movable member 261, wherein the support assembly 27 in the movable member 261 is provided between the two side plates 321, preferably close to the bottom of the side plates 321. The support assembly 27 includes two hollow cavities 271 arranged at intervals, each of which is provided with at least one group of positioning beads 272, and the positioning beads 272 in the two hollow cavities 271 are arranged facing each other, and the positioning beads 272 abut against the hollow cavities 271 through springs. The two groups of facing positioning beads 272 support the bolts to prevent the bolts from falling. Preferably, each group of positioning beads 272 includes two.

[0048] A slideway 28 is provided below the first through slot 24 and the second through slot 25 for the bolt to slide down, and each slideway 28 includes two parallel slide rails 281. The distance between the two slide rails 281 is smaller than the width of the screw head and larger than the width of the screw rod, and elastic parts are provided at the ends of the two slide rails 281. In this embodiment, the elastic part is a spring.

[0049] The aforementioned grabbing structure 3 includes a lifting assembly 31, a rotating assembly 32 and a transmission assembly 33, wherein the lifting assembly 31 includes a top plate 311, on which a lead screw 312 passing through the top plate 311 is arranged, the lead screw 312 is screwed with a sliding bottom plate 313, and an electric wrench 314 is arranged on the lower end surface of the sliding bottom plate 313, the lead screw 312 drives the sliding bottom plate 313 to move up and down, and then drives the electric wrench 314 to move up and down, further, the aforementioned rotating assembly 32 includes two parallel side plates 321, the top ends of the two side plates 321 are fixedly connected to the aforementioned top plate 311, the bottom ends of the side plates 321 are preferably inverted triangles, and a rotating shaft 322 is arranged at the bottom end of the side plates 321, and at least one rotating shaft 322 is provided with a non-circular gear and a driving gear shaft 323 meshing with the non-circular gear. The driving gear shaft 323 is driven to rotate by a motor, so that the rotating assembly 32 rotates around the rotating shaft 322. Preferably, the non-circular gear is a semi-circular gear, which is fixedly connected to the rotating shaft 322 and can drive the side plate 321 to rotate. Preferably, a bearing seat matched with the rotating shaft 322 is provided on the bracket to reduce the rotation resistance of the rotating assembly 32.

[0050] Furthermore, the aforementioned transmission assembly 33 is arranged on the sliding plate, including a driving gear 331, a first gear 332, a second gear 333 and a third gear 334, the first gear 332 is meshed with the driving gear 331, the first gear 332 and the second gear 333 are connected by a gear shaft, the third gear 334 is meshed with the second gear 333, and the second gear 333 is connected to the main shaft of the electric wrench 314.

[0051] In this embodiment, two transmission assemblies 33 are provided to correspond to the double-stations realized by the first through slot 24 and the second through slot 25 . The two sets of transmission assemblies 33 share the same driving gear 331 to realize synchronous tightening of the bolts.

[0052] The above structure works as follows:

[0053] When a number of bolts fall into the discharge barrel 11, the impeller 13 drives the tray 12 to rotate, arranging the bolts that meet the requirements in a radial manner, and adjusting the bolts that do not meet the requirements through the shifting block 14, the screening assembly 15, the first shifting pin 17, and the second shifting pin 18. The bolts that meet the requirements enter the bearing plate 21 through the discharge port below the screening assembly 15. Due to the continuous operation of the discharge structure 1, the subsequent bolts will continuously push the previous bolts to move forward. When the preceding bolt moves to the baffle plate 22 and the supporting plate 21, the movable part 261 moves to the top of the first through slot 24 under the action of the distribution crank 26. At this time, the preceding and succeeding bolts can all fall into the movable part. Since the distance between the two side plates 321 in the movable part is approximately the width of a screw head, the two bolts are stacked together longitudinally. Then the movable part 261 moves toward the second through slot 25. Since the side plate 321 close to the first through slot 24 is approximately the height of a screw head, when the movable part 261 moves toward the second through slot 25, the succeeding screw remains stationary due to inertia, slides from the side plate 321 close to the first through slot 24, falls into the first through slot 24, and is supported by the support assembly 27 in the first through slot 24. The preceding bolt is driven by the movable part 261 to the top of the second through slot 25.

[0054] Of course, this structure can also achieve a state in which the subsequent bolts fall into the first through groove 24 when the previous bolts are transported to the second through groove 25 by the movable part 261 by adjusting the discharge speed of the discharge barrel 11 and the reciprocating frequency of the movable part 261.

[0055] When the preceding bolt and the subsequent bolt are stably supported by the positioning bead 272, the electric wrench 314 arranged on the bracket will grab and tighten the preceding bolt and the subsequent bolt. In this embodiment, the rotation angle of the electric wrench 314 is a right angle, which is realized by the non-circular gear and the driving gear shaft. The starting position of the electric wrench 314 is in line with the bolt. The mounting portion of the electric wrench 314 absorbs the bolt and rotates downward. At this time, the positioning bead 272 is subjected to the force of the bolt, and the positioning bead 272 retracts into the cavity 271, so that the bolt slides over the positioning bead 272 and rotates ninety degrees along the slide 28. The elastic portion at the end of the slide rail 281 can not only support the bolt, but also prevent the slide rail 281 from being bent or damaged when the electric wrench 314 descends to work.

[0056] Furthermore, in the aforementioned technical solution, due to the gap between the baffle plate 22 and the bearing plate 21, the bolts continuously fall from the gap under the action of the blanking structure 1, which makes it inconvenient to control the blanking frequency of the bolts. Therefore, the present invention also improves the baffle plate 22 and the bearing plate 21.

[0057] Specifically, a blocking assembly 29 is provided on the blocking plate 22, and the blocking assembly 29 includes a main body 291. The main body 291 has a cavity, and a tongue 292 is provided in the cavity. A supporting column 293 is provided on the side of the tongue 292 facing the supporting plate 21, and a guide column 294 is provided on the side of the tongue 292 away from the supporting plate 21. A spring is provided between the guide column 294 and the inner wall of the main body 291, and the supporting column 293 can abut against the side of the supporting plate 21. The tongue 292 is located on the path of the movable part 261.

[0058] When the movable member 261 moves toward the first through slot 24, when it does not contact the tongue 292, the supporting column 293 abuts against the bearing plate 21 to prevent the bolt from falling. When the movable member 261 contacts the tongue 292 and continues to move forward in the same direction, the supporting column 293 is separated from the bearing plate 21, and the bolt falls from between the two. The number of bolts falling is determined by the distance between the bearing plate 21 and the support plate 23. In this embodiment, the distance between the bearing plate 21 and the support plate 23 is about the width of two screw heads, so only two bolts can fall due to the gap between the supporting column 293 and the bearing plate 21, and the third bolt is not lower than the supporting column 293 because of the support of the first two bolts in the longitudinal direction. When the movable part 261 moves toward the second through slot 25 , the supporting column 293 moves toward the bearing plate 21 , and the supporting column 293 slowly props up the third bolt to prevent the third bolt from falling, and the second bolt falls into the first through slot 24 like the subsequent bolt mentioned above, and the first bolt is driven to the top of the second through slot 25 by the movable part 261 .

[0059] In the optimization of this part, the setting of the blocking component 29 not only limits the number of bolts that fall, ensuring that the bolts are more orderly during the distribution process and have stronger linkage with the movable part 261, but also because the supporting column 293 hinders the fall of the third bolt, the third bolt and subsequent bolts can only wait in line on the bearing plate 21; and because the unloading structure 1 continuously unloads and pushes the bolts forward until the third bolt abuts against the blocking component 29 or the baffle plate 22, in this embodiment, it abuts against the blocking component 29 to generate a force, and the reaction force of the force is transmitted to the bolts in the unloading structure 1, so that the bolt arrangement in the unloading structure 1 is more compact, further avoiding the situation where the bolts in the unloading structure 1 are inefficient due to excessive gaps.

[0060] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A double-bolt distribution type bolt screening machine, characterized in that: include: The material discharge structure (1) comprises a cylindrical material discharge barrel (11), the top of the material discharge barrel (11) is open, the side wall is provided with a discharge port, a rotatable tray (12) is provided inside the material discharge barrel (11), the tray (12) is used to carry bolts, and a shifting block (14) is provided on the inner wall of the material discharge barrel (11), and the shifting block (14) is arranged above the tray (12); A cloth structure (2) comprises a bearing plate (21), one end of the bearing plate (21) is provided with a baffle plate (22), the baffle plate (22) is spaced apart from the bearing plate (21), a support plate (23) is arranged below the bearing plate (21) in parallel, a first through slot (24) and a second through slot (25) are spaced apart on the support plate (23), the first through slot (24) is located directly below the gap formed by the bearing plate (21) and the baffle plate (22), the second through slot (25) is arranged parallel to the first through slot (24), a distribution crank (26) is further arranged on the support plate (23), the distribution crank (26) comprises a movable part (261), the The movable member (261) reciprocates linearly between the first through slot (24) and the second through slot (25); the movable member (261) comprises side plates (321) arranged on the left and right, and a transverse plate arranged between the side plates (321); the first through slot (24) and the bottom of the two side plates (321) are both provided with a support assembly (27); the lower ends of the first through slot (24) and the second through slot (25) are also respectively connected with a slideway (28) for the bolt to slide down; each slideway (28) comprises two parallel slide rails (281) and the ends of the two slide rails (281) are provided with an elastic part; the distance between the two slide rails (281) is less than the width of the screw head and greater than the width of the screw rod; A rotatable gripping structure (3), wherein the starting end of the slideway (28) is located within the rotation range of the gripping structure (3) to grip the bolt; The connecting bridge (4) has one end connected to the discharge port and tangent to the side wall of the lower barrel (11), and the other end connected to a side of the support plate (21) away from the baffle plate (22), and the discharge port and the support plate (21) are located in the same horizontal plane; the connecting bridge (4) is a plate.

2. The double-bolt distribution type bolt screening machine according to claim 1 is characterized in that: The material discharging structure (1) further comprises a screening component (15), the screening component (15) being fan-shaped, the screening component (15) being arranged above the tray (12) and below the shifting block (14), the screening component (15) being fixed to the inner wall of the material discharging barrel (11), the screening component (15) being provided with a slope (16) in the opposite direction of the rotation of the tray (12), the screening component (15) being further provided with a first shifting pin (17) and a second shifting pin (18), the first shifting pin (17) being arranged near the center of the screening component (15), the second shifting pin (18) being arranged near the inner wall of the material discharging barrel (11), and the distance between the first shifting pin (17) and the second shifting pin (18) being greater than the length of the bolt.

3. The double-bolt distribution type bolt screening machine according to claim 2 is characterized in that: The distribution crank (26) further comprises a first crank (262), a second crank (263) and a crank motor; one end of the first crank (262) is rotationally connected to the movable part (261), and the other end is rotationally connected to the second crank (263); the other end of the second crank (263) is connected to the crank motor; the crank motor drives the movable part (261) to perform linear reciprocating motion.

4. The double-bolt distribution type bolt screening machine according to claim 3 is characterized in that: The movable member (261) comprises side plates (321) arranged parallel to each other on the left and right sides and a transverse plate fixedly connected to the side plates (321); the distance between the two side plates (321) is the width of a screw head; the side plate (321) close to the first through slot (24) is the height of a screw head; the side plate (321) close to the second through slot (25) is the height of two screw heads; and the two side plates (321) are flush from the bottom ends.

5. The double-bolt distribution type bolt screening machine according to claim 1, characterized in that: A blocking assembly (29) is arranged on the blocking plate (22), and the blocking assembly (29) comprises a body (291), the body (291) having a cavity, a tongue (292) being arranged in the cavity, a supporting column (293) being arranged on the side of the tongue (292) facing the bearing plate (21), a guiding column (294) being arranged on the side of the tongue (292) away from the bearing plate (21), a spring being arranged between the guiding column (294) and the inner wall of the body (291), the supporting column (293) being able to abut against the side of the bearing plate (21), and the tongue (292) being located on the moving path of the movable member (261).

6. The double-bolt distribution type bolt screening machine according to claim 1, characterized in that: The support assembly (27) comprises a hollow cavity (271), in which at least one group of positioning beads (272) is arranged, the positioning beads (272) are arranged facing each other, and the positioning beads (272) are in contact with the hollow cavity (271) via a spring.

7. The double-bolt distribution type bolt screening machine according to claim 6, characterized in that: The distance between the two hollow cavities (271) is greater than the width of the screw head, and the distance between the two groups of positioning beads (272) is less than the width of the bolt.

8. The double-bolt distribution type bolt screening machine according to claim 1, characterized in that: The double-bolt distribution type bolt screening machine also includes a bracket, the bottom end of which is provided with a running structure, and the unloading structure (1), the material distribution structure (2), and the grabbing structure (3) are arranged on the bracket.

9. The double-bolt distribution type bolt screening machine according to claim 8, characterized in that: The grabbing structure (3) comprises: a lifting component (31), a rotating component (32) and a transmission component (33); The lifting assembly (31) comprises a top plate (311), the top plate (311) is provided with a lead screw (312) passing through the top plate (311), the lead screw (312) is screwed with a sliding bottom plate (313), the lower end surface of the sliding bottom plate (313) is provided with an electric wrench (314), and the lead screw (312) rotates to drive the sliding bottom plate (313) to move up and down; The rotating assembly (32) comprises two side plates (321) arranged in parallel, the upper end of each side plate (321) is fixedly connected to the top plate (311), the bottom end of each side plate (321) is provided with a rotating shaft (322), and at least one rotating shaft (322) is provided with a non-circular gear and a driving gear shaft (323) meshing with the non-circular gear; The transmission assembly (33) is arranged on the sliding bottom plate (313), and comprises a driving gear (331), a first gear (332), a second gear (333) and a third gear (334); the first gear (332) is meshed with the driving gear (331); the first gear (332) and the third gear (334) are connected by a gear shaft; the third gear (334) is meshed with the second gear (333); and the second gear (333) is transmission-connected to a main shaft of the electric wrench (314).

Images