Protective tool for preventing carburization

Abstract

The utility model relates to the technical field of metal heat treatment carburization, in particular to an anti-carburizing protection tool which comprises a carrier plate, the upper end of the carrier plate is sequentially and fixedly connected with a plurality of fixing plates from front to back, and clamping plates are attached to the rear ends of the fixing plates. A plurality of semi-cylindrical grooves are formed in the rear ends of the fixing plates and the front ends of the clamping plates, a gear body is arranged between the two semi-cylindrical grooves which correspond to each other front and back through a flexible part, and the shaft neck part of the gear body is sleeved with a protective cylinder. According to the protection tool, anti-carburizing protection treatment is carried out on the shaft neck part of the gear main body through the protection barrel, and the conditions that in the prior art, when the shaft neck part of the gear main body is directly coated with an anti-carburizing coating, the thickness is not uniform, and the anti-carburizing coating is prone to falling off in the drying and transferring process are avoided; the anti-carburizing effect of the shaft neck portion of the gear body is guaranteed, and meanwhile the protection tool is convenient to use and good in applicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal heat treatment carburizing technical field, concretely is a kind of protective tool for preventing carburization. BACKGROUND

[0002] Steering gear heat treatment is the heat treatment process implemented to gear parts in steering system, mainly including carburizing quenching, tempering and other processes, and its core purpose is to change the metallographic structure of material surface or internal, improve the hardness, wear resistance and fatigue resistance of gear, while maintaining the toughness of core, to ensure the transmission accuracy and reliability of steering system.

[0003] To avoid brittle fracture risk, maintain dimensional stability and simplify subsequent processing, it is necessary to prevent carburization treatment on the journal of steering gear before carburizing operation, the existing processing mode is to apply carburization-resistant paint on the journal of steering gear (carburization-resistant paint is a protective material, and its working principle is to form a dense coating under high temperature to prevent carbon elements from penetrating into the matrix), but the carburization-resistant paint is prone to uneven thickness when applied, and after carburizing, the journal of steering gear will have hard spots, which will exacerbate tool wear during subsequent processing and affect subsequent processing; at the same time, the carburization-resistant paint is prone to falling off during drying and transferring, and once the carburization-resistant paint falls off, the steering gear will have brittle fracture risk after carburizing. Therefore, we propose a protective tool for preventing carburization. SUMMARY

[0004] The utility model aims at providing a protective tool for preventing carburization to solve the problems raised in the background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a protective tool for preventing carburization, comprising a carrier plate, a plurality of fixed plates are fixedly connected to the front end of the carrier plate from front to back, a clamping plate is attached to the rear end of each of the plurality of fixed plates, a plurality of semicylindrical grooves are formed in the rear end of the plurality of fixed plates and the front end of the plurality of clamping plates, a gear body is provided between two corresponding semicylindrical grooves in front of and behind each other through a flexible member, a protective cylinder is sleeved on the journal of the gear body, a sliding mechanism is provided between the plurality of clamping plates and the carrier plate, a concave frame is fixedly connected to the side wall of the plurality of clamping plates through a connecting assembly, a rectangular plate is installed on the upper side of each of the plurality of fixed plates through an adjusting assembly, a plurality of holes are formed in the upper end of the plurality of rectangular plates, the number of the plurality of holes and semicylindrical grooves is the same, and the upper and lower positions of the plurality of holes and semicylindrical grooves correspond to each other, and the protective cylinder is located on the inner side of one of the holes.

[0006] Preferably, the flexible piece comprises two rubber pads, the two rubber pads are fixedly connected to the inner walls of the two semicylindrical grooves respectively, and the gear body is attached between the two rubber pads.

[0007] Preferably, the sliding mechanism comprises a T-shaped plate and a T-shaped groove, the T-shaped groove is arranged at the upper end of the carrier plate, the T-shaped plate is fixedly connected to the bottom ends of the plurality of clamping plates, and the T-shaped plate and the T-shaped groove are in sliding fit, and a fixing piece is arranged between the T-shaped plate and the T-shaped groove.

[0008] Preferably, the fixing piece comprises two knob screws II, the two knob screws II are screwed into the inner wall of the T-shaped plate, and the bottom ends of the two knob screws II are tightly attached to the inner bottom end surface of the T-shaped groove.

[0009] Preferably, the connecting assembly comprises a plurality of connecting blocks, the plurality of connecting blocks are fixedly connected between the two side walls of the plurality of clamping plates and the two inner side walls of the concave frame.

[0010] Preferably, the adjusting assembly comprises two square tubes, the two square tubes are fixedly connected to the upper end of the concave frame in a symmetrical manner, the inner walls of the two square tubes are attached with square rods, the top ends of the two square rods are fixedly connected to the bottom two side edges of the rectangular plate, and a locking piece is arranged between one of the square rods and the square tube.

[0011] Preferably, the locking piece comprises an internally threaded tube, the internally threaded tube is communicated with the side wall of the square tube at the upper edge, the inner wall of the internally threaded tube is threadedly connected with a knob screw I, and the end of the knob screw I is tightly attached to the side wall of the square rod.

[0012] Preferably, the front and rear ends of the carrier plate are fixedly connected with handles, and the four handles are concave.

[0013] Compared with the prior art, the protective tool is used for protecting the shaft neck of the gear body, and the shaft neck of the gear body is prevented from being directly coated with anti-carburizing paint, so that the anti-carburizing effect of the shaft neck of the gear body is ensured, and the protective tool is convenient to use and has good applicability. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic view of the overall structure of the utility model;

[0015] Figure 2 It is a schematic view of the overall structure of the utility model; Figure 1 It is an enlarged view of the structure at A in the utility model.

[0016] Figure 3 Part of the components between the concave frame and the clamping plate of the utility model are shown in the figure;

[0017] Figure 4 The cross-sectional view of the carrier plate of the utility model is shown in the figure;

[0018] Figure 5 The display figure of the gear body and the protective cylinder of the utility model is shown in the figure.

[0019] In the figure, the components represented by each number are listed as follows: 1, carrier plate; 2, fixed plate; 3, handle; 4, concave frame; 5, square tube; 6, knob screw I; 7, rectangular plate; 8, hole groove; 9, clamping plate; 10, rubber pad; 11, gear body; 12, protective cylinder; 13, internal thread tube; 14, square rod; 15, semicircular cylindrical groove; 16, connecting block; 17, T-shaped plate; 18, T-shaped groove; 19, knob screw II. DETAILED DESCRIPTION

[0020] 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 scope of protection of the utility model.

[0021] Embodiment one: please refer to Figure 1 - Figure 5 , a protective tool for preventing carbonization in the figure, including carrier plate 1, the upper end of carrier plate 1 is sequentially fixedly connected with multiple fixed plates 2 from front to back, the rear end of multiple fixed plates 2 is matched with clamping plate 9, and the rear end of multiple fixed plates 2 and the front end of multiple clamping plates 9 are both provided with multiple semicircular cylindrical grooves 15, wherein two front and back corresponding semicircular cylindrical grooves 15 are provided with gear body 11 through flexible piece, the shaft neck part of gear body 11 is sleeved with protective cylinder 12, sliding mechanism is arranged between multiple clamping plates 9 and carrier plate 1, and the side wall of multiple clamping plates 9 is fixedly connected with concave frame 4 through connecting assembly, multiple rectangular plates 7 are installed on the upper side of multiple fixed plates 2 through adjusting assembly, multiple hole grooves 8 are formed in the upper end of multiple rectangular plates 7, the number of multiple hole grooves 8 is same as that of multiple semicircular cylindrical grooves 15, and the upper and lower positions of multiple hole grooves 8 correspond to those of multiple semicircular cylindrical grooves 15, and protective cylinder 12 is located on the inner side of one of hole grooves 8.

[0022] Flexible piece includes two rubber pads 10, two rubber pads 10 are fixedly connected on the inner wall of two semicircular cylindrical grooves 15, and gear body 11 is matched between two rubber pads 10.

[0023] The sliding mechanism comprises a T-shaped plate 17 and a T-shaped groove 18, the T-shaped groove 18 is arranged at the upper end of the carrier plate 1, the T-shaped plate 17 is fixedly connected to the bottom end of the plurality of clamping plates 9, and the T-shaped plate 17 and the T-shaped groove 18 are in sliding fit, and the T-shaped plate 17 and the T-shaped groove 18 are provided with a fixing member.

[0024] The fixing member comprises two knob screws 19, both of which are screwed into the inner wall of the T-shaped plate 17, and the bottom end of each knob screw 19 is tightly attached to the inner bottom end surface of the T-shaped groove 18.

[0025] The connecting assembly comprises a plurality of connecting blocks 16, which are fixedly connected between the two side walls of the plurality of clamping plates 9 and the inner side walls of the concave frame 4.

[0026] The front and rear ends of the carrier plate 1 are fixedly connected with handles 3, and the four handles 3 are concave in shape; specifically, the concave handles 3 are convenient for carrying and moving the carrier plate 1.

[0027] In this embodiment, first, turn the two knob screws 19 upwards in turn, both of which will be turned upwards in the inner wall of the T-shaped plate 17, when the bottom end of the two knob screws 19 is away from the inner bottom end of the T-shaped groove 18, pull the concave frame 4 backward, the concave frame 4 can drive the plurality of clamping plates 9 to slide backward at the upper end of the carrier plate 1 (in this process, the plurality of clamping plates 9 will drive the T-shaped plate 17 to slide backward in the T-shaped groove 18), then the gear body 11 can be placed between the fixed plate 2 and the clamping plate 9, and the gear body 11 is located between the semicylindrical grooves 15 on the fixed plate 2 and the clamping plate 9, then push the concave frame 4 forward, the front end surface of the plurality of clamping plates 9 can be moved to be attached to the rear end surface of the corresponding fixed plate 2, at this time the gear body 11 will be clamped between the two rubber pads 10 of the semicylindrical grooves 15, the rubber pads 10 can play a certain protection role, then turn the two knob screws 19 downwards in turn, so that the bottom end of the two knob screws 19 is tightly attached to the inner bottom end surface of the T-shaped groove 18, at this time the T-shaped plate 17 and the plurality of clamping plates 9 can be fixed, then the gear body 11 can be fixed, because the rear end of the plurality of fixed plates 2 and the front end of the plurality of clamping plates 9 are provided with a plurality of semicylindrical grooves 15, so that a plurality of gear bodies 11 can be fixed between adjacent fixed plates 2 and clamping plates 9, the fixing operation is simple, then a plurality of protective cylinders 12 (the protective cylinders 12 are made of stainless steel material, and the inner walls of the plurality of protective cylinders 12 are coated with anti-carburizing paint) can be respectively sleeved on the shaft neck portions of the plurality of gear bodies 11, because the plurality of gear bodies 11 are in a fixed state, thereby facilitating the operation of sleeving the protective cylinder 12 on the shaft neck portion of the gear body 11, and for the same reason, the anti-carburizing treated plurality of gear bodies 11 and the protective cylinder 12 thereon can be removed from the tool according to the reverse operation, the operation is simple.

[0028] Since the rectangular plates 7 are installed above the plurality of fixed plates 2 through the adjusting assemblies, the height of the rectangular plates 7 can be adjusted through the adjusting assemblies, so that the protection sleeves 12 of the shaft neck portions of the plurality of gear bodies 11 are respectively located in the hole slots 8 on the respective corresponding rectangular plates 7, thereby achieving simple protection of the plurality of protection sleeves 12, so as to prevent the protection sleeves 12 from being bumped during storage or transportation, and further ensuring the anti-carburization effect of the shaft neck portions of the gear bodies 11.

[0029] Embodiment Two: Please refer to Figure 1 Figure 3 The embodiment further illustrates Embodiment One, and the adjusting assembly in the diagram includes two square tubes 5 which are symmetrically fixedly connected to the upper ends of the concave frames 4, and the inner walls of the two square tubes 5 are respectively attached with square rods 14, and the top ends of the two square rods 14 are respectively fixedly connected with the bottom end two side edges of the rectangular plate 7, and a locking piece is arranged between one of the square rods 14 and the square tube 5.

[0030] The locking piece includes an internally threaded tube 13 which is communicated with the side wall upper edge of the square tube 5, and the inner wall of the internally threaded tube 13 is threadedly connected with a knob screw 1 6, and the end of the knob screw 1 6 is tightly attached with the side wall of the square rod 14.

[0031] In this embodiment, when one of the knob screws 1 6 is rotated outward, the knob screw 1 6 will be rotated outward in the internally threaded tube 1 3 on the corresponding square tube 5, and when the end of the knob screw 1 6 is away from the side wall of the corresponding square rod 14, the corresponding rectangular plate 7 can be moved upward at this time, and the rectangular plate 7 can drive the two square rods 14 on it to slide upward in the respective corresponding square tubes 5, thus the height of the rectangular plate 7 can be adjusted, and if there is a gear body 1 1 with a higher height, the position of the protection sleeve 1 2 of the shaft neck portion of the gear body 1 1 will also be higher, at this time, the height of the rectangular plate 7 can be adjusted so that the plurality of hole slots 8 on the rectangular plate 7 are all located on the outer sides of the respective corresponding protection sleeves 1 2, and then the rectangular plate 7 can protect the protection sleeves 1 2 of the shaft neck portions of the gear bodies 1 1 with different heights, and the applicability is good, after the height of the rectangular plate 7 is adjusted, the knob screw 1 6 is rotated inward so that the knob screw 1 6 is reset and tightly abuts against the side wall of the corresponding square rod 1 4, and then the square rod 1 4 can be fixed in the square tube 5, and the rectangular plate 7 can be kept fixed, and in the same way, the other protection sleeves 1 2 can also be located in the hole slots 8 on the respective corresponding rectangular plates 7 according to the same operation.

[0032] It should be noted that the protection tool protects the shaft neck portions of the gear bodies 1 1 through the protection sleeves 1 2, which avoids the situation that the anti-carburization coating on the shaft neck portions of the gear bodies 1 1 is not uniform in thickness and is easy to fall off during drying and transferring in the prior art, and ensures the anti-carburization effect of the shaft neck portions of the gear bodies 1 1, and meanwhile, the protection tool is convenient to use and has good applicability.​

[0033] It is also important to note that the use of relational terms such as first and second, and the like, are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, 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 can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0034] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A protective tooling for the protection against carburization, comprising a carrier plate (1), characterized in that: The upper end of the carrier plate (1) is sequentially fixedly connected with a plurality of fixed plates (2) from front to back, the rear end of each of the plurality of fixed plates (2) is attached with a clamping plate (9), and the rear end of each of the plurality of fixed plates (2) and the front end of each of the plurality of clamping plates (9) are provided with a plurality of semicylindrical grooves (15), wherein two front and rear corresponding semicylindrical grooves (15) are provided with a gear body (11) through a flexible piece, the shaft neck portion of the gear body (11) is sleeved with a protective cylinder (12), a sliding mechanism is arranged between the plurality of clamping plates (9) and the carrier plate (1), the side walls of the plurality of clamping plates (9) are fixedly connected with a concave frame (4) through a connecting assembly, the upper portion of each of the plurality of fixed plates (2) is provided with a rectangular plate (7) through an adjusting assembly, the upper end of each of the plurality of rectangular plates (7) is provided with a plurality of hole grooves (8), the plurality of hole grooves (8) and the plurality of semicylindrical grooves (15) are the same in number and correspond in position, and the protective cylinder (12) is located on the inner side of one of the hole grooves (8).

2. A protective tooling for preventing carburization according to claim 1, wherein: The flexible piece comprises two rubber pads (10), and the two rubber pads (10) are fixedly connected to the inner walls of the two semicylindrical grooves (15), respectively.

3. A protective package for preventing carburization according to claim 1, wherein: The sliding mechanism comprises a T-shaped plate (17) and a T-shaped groove (18), the T-shaped groove (18) is arranged at the upper end of the carrier plate (1), the T-shaped plate (17) is fixedly connected to the bottom end of the plurality of clamping plates (9), and the T-shaped plate (17) and the T-shaped groove (18) are in sliding fit, and a fixing piece is arranged between the T-shaped plate (17) and the T-shaped groove (18).

4. A protective package for preventing carburization according to claim 3, wherein: The fixing piece comprises two knob screws two (19), and the two knob screws two (19) are screwed into the inner wall of the T-shaped plate (17), respectively, and the bottom end of each of the two knob screws two (19) is tightly attached to the inner bottom end surface of the T-shaped groove (18).

5. The anti-carburization protective package of claim 1 wherein: The connecting assembly comprises a plurality of connecting blocks (16), and the plurality of connecting blocks (16) are fixedly connected between the two side walls of each of the plurality of clamping plates (9) and the two inner side walls of the concave frame (4).

6. The anti-carburization protective package of claim 1 wherein: The adjusting assembly comprises two square tubes (5), the two square tubes (5) are fixedly connected to the upper end of the concave frame (4) in a symmetrical manner, the inner walls of the two square tubes (5) are attached with square rods (14), respectively, the top end of each of the two square rods (14) is fixedly connected to the bottom end of each side edge of the rectangular plate (7), and a locking piece is arranged between one of the square rods (14) and the square tube (5).

7. A protective package for preventing carburization according to claim 6, wherein: The locking piece comprises an internally threaded tube (13), the internally threaded tube (13) is connected to the upper edge of the side wall of the square tube (5), the inner wall of the internally threaded tube (13) is threadedly connected with a knob screw one (6), and the end portion of the knob screw one (6) is tightly attached to the side wall of the square rod (14).

8. A protective package for preventing carburization according to claim 6, wherein: The front and rear side edges of the carrier plate (1) are fixedly connected with handles (3), respectively, and the four handles (3) are concave in shape.

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