Bolt with rack structure

Abstract

The utility model discloses a bolt with a rack structure, which relates to the field of bolts and comprises a bolt component and a rack component. The bolt assembly is composed of a connecting column, a first stud and a second stud. The top of the connecting column is fixedly connected with a first stud, and the bottom of the connecting column is fixedly connected with a second stud; the rack assembly is composed of a main rack, a first screw hole, an extension rack, a groove, a second screw hole and a positioning bolt. A first screw hole is formed in the bottom of the main rack, and the first screw hole is connected with the first stud in a matched mode; the two sides of the main rack are connected with a plurality of extension racks which are distributed in parallel; grooves are formed in the bottom of the main rack and the bottom of the extension rack, second screw holes are formed in the side faces of the grooves, and positioning bolts are installed at the second screw holes. The gear is connected with the rack in a matched mode, the second stud is connected with the machine body in a matched mode, the machine body can be directly driven to do linear reciprocating motion through the bolt structure when the gear rotates, the structure is simplified, and transmission efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of bolts especially relates to a bolt with rack structure. BACKGROUND

[0002] In the field of mechanical transmission, the realization of linear reciprocating motion usually relies on traditional structures such as crank connecting rod mechanism, hydraulic / pneumatic cylinder, ball screw or synchronous belt, but these schemes have significant limitations in compactness, cost and precision:

[0003] Crank connecting rod mechanism: when converting rotary motion into linear motion, it needs to rely on multi-link hinge structure, resulting in a large overall volume, which is difficult to adapt to narrow installation space (such as precision instruments or small automated equipment). In addition, the gap at the joint of the connecting rod is prone to transmission errors, and the precision decline problem caused by wear after long-term use is particularly prominent.

[0004] Hydraulic / pneumatic drive: although it can provide a larger driving force, it needs to be equipped with auxiliary systems such as pump stations, pipelines and valve bodies, which has the problems of high energy consumption, complex maintenance and susceptibility to medium leakage pollution. In scenarios requiring high-frequency reciprocating motion, its response speed is also difficult to meet the requirements.

[0005] Ball screw transmission: as a high-precision transmission scheme, it realizes motion conversion through the rolling friction between the nut and the screw, which has the advantage of high positioning accuracy, but the ball circulation structure is complex and costly, and it is sensitive to foreign matter intrusion, requiring an additional protective cover, further increasing the space occupation. SUMMARY

[0006] To solve the above-mentioned prior art problems, the utility model provides a bolt with rack structure, which combines rack and screw, directly drives the bolt to rotate with gear, simplifies the structure and improves the transmission efficiency.

[0007] The utility model adopts the technical scheme that a bolt with rack structure, including bolt assembly and rack assembly, the bolt assembly is composed of connecting column, first screw post and second screw post, the top of connecting column is fixedly connected with first screw post, and the bottom of connecting column is fixedly connected with second screw post, the rack assembly is composed of main rack, first screw hole, extension rack, groove, second screw hole and positioning bolt, the bottom of main rack is equipped with first screw hole, and first screw hole is connected with first screw post, a plurality of parallel extension racks are connected on the both sides of main rack, the bottom of main rack and extension rack is equipped with groove, the side surface of groove is equipped with second screw hole, and positioning bolt is installed at second screw hole, main rack and extension rack are connected through corresponding second screw hole and positioning bolt, and the adjacent extension racks are connected through corresponding second screw hole and positioning bolt.

[0008] The connecting column has a diameter greater than the diameters of the first and second threaded columns, and the connecting column functions as a transition and reinforcement.

[0009] Compared with the prior art, the utility model has the beneficial effects that:

[0010] The bolt with the rack structure is connected with the gear and the rack, and the gear is connected with the body, so that the bolt structure can directly drive the body to move linearly when the gear rotates, the structure is simplified and the transmission efficiency is improved, the direct thread driving avoids the gap error of the traditional connecting rod mechanism, the positioning accuracy is improved, and the bolt is suitable for the precise reciprocating motion scene in a narrow space.

[0011] The main rack and the extension rack are detachably connected, the overall length of the rack can be adjusted according to the installation scene, and when a rack is worn, the rack can be replaced alone, so that the cost is saved. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0013] Figure 1 It is the structure schematic view of the bottom of the utility model,

[0014] Figure 2 It is the structure schematic view of the bottom of the utility model,

[0015] Figure 3 It is the structure schematic view of the bolt assembly,

[0016] Figure 4 It is the structure schematic view of the main rack.

[0017] The drawings are marked, 1. connecting column, 2. first threaded column, 3. second threaded column, 4. main rack, 5. first threaded hole, 6. extension rack, 7. groove, 8. second threaded hole, 9. positioning bolt. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail by combining with the embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0019] Refer to Figures 1-4The embodiment provides a bolt with a rack structure, which comprises a bolt assembly and a rack assembly; the bolt assembly is composed of a connecting column 1, a first screw column 2 and a second screw column 3; the top of the connecting column 1 is fixedly connected with the first screw column 2, and the bottom of the connecting column 1 is fixedly connected with the second screw column 3; the rack assembly is composed of a main rack 4, a first screw hole 5, an extended rack 6, a groove 7, a second screw hole 8 and a positioning bolt 9; the bottom of the main rack 4 is provided with the first screw hole 5, and the first screw hole 5 is connected with the first screw column 2; the two sides of the main rack 4 are connected with a plurality of parallel extended racks 6; the bottom of the main rack 4 and the extended rack 6 are provided with the groove 7, the side of the groove 7 is provided with the second screw hole 8, and the second screw hole 8 is provided with the positioning bolt 9; the main rack 4 and the extended rack 6 are detachably connected through the corresponding second screw hole 8 and the positioning bolt 9, and the adjacent extended racks 6 are detachably connected through the corresponding second screw hole 8 and the positioning bolt 9.

[0020] In the embodiment, the diameter of the connecting column 1 is greater than the diameter of the first screw column 2 and the diameter of the second screw column 3, and the connecting column 1 plays a transition and reinforcement role.

[0021] When the bolt with the rack structure is used, the second screw column is screwed into the screw hole of the machine body, and the top of the rack assembly is connected with the gear; when the gear rotates forward and reversely, the machine body is driven to move horizontally through the structure. When a rack is worn, the corresponding positioning bolt 9 can be unscrewed, and the rack can be replaced; and the number of the extended racks 6 can be increased or reduced according to the installation scene requirement.

[0022] Since the positioning bolt 9 is located in the groove 7, the space is small, and the positioning bolt 9 can be assembled and disassembled through the cooperation of a drill and a corner tool or a universal flexible shaft joint.

[0023] Of course, the above description is not limited to the above examples, and the technical features not described in the utility model can be realized through or by using the prior art, which will not be repeated here; the above embodiment and the drawings are only used to illustrate the technical scheme of the utility model and are not limited to the utility model, the preferred embodiment is described in detail, and those skilled in the art should understand that the changes, modifications, additions or replacements made by those skilled in the art within the essential scope of the utility model do not deviate from the purpose of the utility model, and should also belong to the protection scope of the claims of the utility model.

Claims

1. A bolt having a rack structure, characterized by, The bolt assembly and the rack assembly are included; the bolt assembly is composed of a connecting column (1), a first stud (2) and a second stud (3); the top of the connecting column (1) is fixedly connected with the first stud (2), and the bottom of the connecting column (1) is fixedly connected with the second stud (3); the rack assembly is composed of a main rack (4), a first screw hole (5), an extended rack (6), a groove (7), a second screw hole (8) and a positioning bolt (9); the bottom of the main rack (4) is provided with the first screw hole (5), and the first screw hole (5) is connected with the first stud (2); the two sides of the main rack (4) are connected with a plurality of parallel extended racks (6); the bottom of the main rack (4) and the extended rack (6) is provided with the groove (7), the side of the groove (7) is provided with the second screw hole (8), and the positioning bolt (9) is installed at the second screw hole (8); the main rack (4) and the extended rack (6) are connected through the corresponding second screw hole (8) and the positioning bolt (9), and the adjacent extended racks (6) are connected through the corresponding second screw hole (8) and the positioning bolt (9).

2. The bolt having a rack structure according to claim 1, characterized by, The diameter of the connecting column (1) is greater than the diameter of the first stud (2) and the diameter of the second stud (3).

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