Workpiece lifting appliance for pit type carburizing furnace

Abstract

The utility model discloses a workpiece lifting appliance for a pit type carburizing furnace, which relates to the field of carburizing furnaces and comprises a pair of fixing plates, the pair of fixing plates are fixedly connected through a fixing rod to form a fixing frame, the middle of the fixing frame is divided into an upper fixing frame and a lower fixing frame through a partition plate, and the workpiece lifting appliance further comprises a movable plate. The movable plate is movably installed in the upper fixing frame and the lower fixing frame, a plurality of through holes are formed in the movable plate, an annular cavity is formed in the movable plate, the through holes communicate with the annular cavity, a plurality of second outer gear rings are rotatably installed in the annular cavity, a plurality of arc-shaped plates are fixedly installed on the second outer gear rings, and the arc-shaped plates are fixedly installed on the arc-shaped plates. Arc-shaped sliding openings are formed in the arc-shaped plates, and sliding rods are slidably mounted in the arc-shaped sliding openings, so that the problem that an existing lifting appliance can only fix workpieces with fixed diameters, so that the same lifting appliance cannot be used for carrying out heat treatment on the workpieces with different diameters, and the application range is relatively small is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of carburizing furnaces, specifically a workpiece lifting device for a pit-type carburizing furnace. Background Technology

[0002] Carburizing is an important process in metal processing, which can change the internal structure of metal materials, thereby improving the quality of the workpiece. Carburizing requires a carburizing furnace. The pit carburizing furnace is a new type of energy-saving, cycle-operated heat treatment electric furnace, mainly used for gas carburizing of steel parts. During the use of the carburizing furnace, it is usually necessary to use a lifting device to send the workpiece into the carburizing furnace for heat treatment.

[0003] For example, utility model patent CN203295591U discloses a lifting device for a pit-type carburizing furnace, which includes a lifting plate and a lifting rod. The lifting plate includes an inner iron plate layer and a ceramic layer covering the iron plate layer. An elliptical hole is provided in the center of the lifting plate. The lifting rod is vertically inserted into the elliptical hole. A lifting rod head is provided at the bottom end of the lifting rod, and the cross-section of the lifting rod head is elliptical. This utility model's lifting device for a pit-type carburizing furnace has a simple structure and is easy to use. It allows workpieces to be placed directly on the lifting plate, making it less likely for the workpieces to fall. Furthermore, the lifting plate has good heat resistance, is not easily damaged, and has a long service life.

[0004] However, the fixed honeycomb hole diameter in this utility model can only be used to fix workpieces with a fixed diameter. Therefore, it is not possible to use this lifting tool to perform heat treatment on workpieces of different diameters at the same time, and its application range is relatively small. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a workpiece lifting device for a pit-type carburizing furnace, which solves the technical problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a workpiece lifting device for a pit-type carburizing furnace, comprising a fixed plate, wherein there is a pair of fixed plates, and the pair of fixed plates are fixedly connected by a fixed rod to form a fixed frame. The fixed frame is divided into an upper fixed frame and a lower fixed frame by a partition in the middle, and also includes a movable plate; the two pairs of movable plates are respectively movably installed in the upper fixed frame and the lower fixed frame. The movable plate has several through holes, and an annular cavity is formed inside the movable plate. The several through holes communicate with the annular cavity. Several second external gear rings are rotatably installed in the annular cavity. Several arc-shaped plates are fixedly installed on the second external gear rings. Arc-shaped sliding openings are formed inside the arc-shaped sliding openings. Sliding rods are slidably installed in the arc-shaped sliding openings. A fixed cylinder is fixedly installed in the annular cavity. Several straight plates are fixedly installed on the fixed cylinder. Straight sliding openings are formed inside the several straight plates. The sliding rods are slidably connected to the straight sliding openings. An installation rod is fixedly connected to the sliding rod. The other end of the installation rod passes through the fixed cylinder and is fixedly installed with a clamping block.

[0007] Preferably, an internal gear ring that meshes with a plurality of second external gear rings is rotatably mounted in the annular cavity, a first external gear ring is fixedly mounted at the bottom of the internal gear ring, and a first gear that meshes with the first external gear ring is rotatably mounted in the annular cavity.

[0008] Preferably, a pair of bidirectional threaded rods are rotatably installed in both the upper and lower fixed frames. The bidirectional threaded rods in the upper and lower fixed frames are fixedly connected. The two pairs of movable plates are screwed onto the bidirectional threaded rods, and the movable plates are slidably connected to the fixed rods.

[0009] Preferably, the top fixing plate has a cavity, in which a pair of sprockets are rotatably installed. The tops of a pair of bidirectional threaded rods in the upper fixing frame extend into the cavity and are fixedly connected to the sprockets. The pair of sprockets are driven by a transmission chain.

[0010] Preferably, a first throttle is rotatably mounted on the top fixed plate, and the first throttle is fixedly connected to one of the sprockets.

[0011] Preferably, each of the aforementioned movable plates is rotatably mounted with a second throttle for driving the first gear to rotate.

[0012] Preferably, a lifting ring is installed on the top fixing plate.

[0013] Beneficial effects

[0014] This utility model provides a workpiece lifting tool for a pit-type carburizing furnace, which has the following beneficial effects:

[0015] 1. The device is equipped with movable plates, and the distance between the movable plates can be adjusted to place the workpiece into the through hole on the movable plate. Several second external gear rings are rotatably installed. Rotating the second external gear rings can drive several arc-shaped plates to rotate, thereby causing the slide rod to slide in the arc-shaped sliding mouth. A fixed cylinder is fixedly installed, and the straight plate can be fixedly installed on the fixed cylinder. At this time, the slide rod can also slide in the straight sliding mouth, thereby driving the installation rod to move and driving the clamping block to move. This allows the distance between each clamping block to be adjusted to clamp and fix workpieces of different diameters, so as to facilitate heat treatment of workpieces of different diameters and expand the application range of the lifting device.

[0016] 2. A first gear is installed. When the first gear rotates, it meshes with the first external gear ring, which in turn drives the first external gear ring to rotate, thereby driving the internal gear ring to rotate. The internal gear ring meshes with several second external gear rings, which in turn drive several second external gear rings to rotate. Attached Figure Description

[0017] Figure 1 This is a front view of the internal structure of this utility model;

[0018] Figure 2 for Figure 1 Sectional view of AA;

[0019] Figure 3 for Figure 2 Enlarged diagram of B in the diagram.

[0020] In the diagram: 1. Fixed plate; 2. Fixed frame; 3. Partition plate; 4. Moving plate; 5. First gear; 6. First external gear ring; 7. Second external gear ring; 8. Arc plate; 9. Slide rod; 10. Straight plate; 11. Clamping block; 12. Bidirectional threaded rod; 13. Cavity; 14. Sprocket; 15. Transmission chain; 16. First throttle; 17. Second throttle; 18. Lifting ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Wherein, directional terms such as "upper" and "lower" mentioned herein are used in conjunction with... Figure 1 The orientation is used as a reference.

[0022] Please see Figures 1-3This utility model provides a technical solution: a workpiece lifting device for a pit-type carburizing furnace, including a fixed plate 1, the number of fixed plates 1 being a pair, the pair of fixed plates 1 being fixedly connected by a fixed rod to form a fixed frame 2, the fixed frame 2 being divided into an upper fixed frame 2 and a lower fixed frame 2 by a partition plate 3 in the middle, and also including a movable plate 4; the two pairs of movable plates 4 are respectively movably installed in the upper fixed frame 2 and the lower fixed frame 2, the movable plate 4 having a plurality of through holes, the movable plate 4 having an annular cavity, the plurality of through holes communicating with the annular cavity, the annular cavity having a plurality of second external gear rings 7 being rotatably installed, the second external gear rings 7 having a plurality of arc-shaped plates 8 being fixedly installed, the plurality of arc-shaped sliding openings having arc-shaped sliding openings having sliding rods 9 being slidably installed in the arc-shaped sliding openings, the annular cavity having a fixed cylinder being fixedly installed, the fixed cylinder having a plurality of straight plates 10 being fixedly installed, the plurality of straight plates 10 having straight sliding openings having straight sliding openings, the sliding rods 9 being slidably connected to the straight sliding openings, the sliding rods 9 having a fixed mounting rod being fixedly connected to a mounting rod, the other end of the mounting rod passing through the fixed cylinder and having a clamping block 11 fixedly installed thereon.

[0023] The movable plate 4 is movably installed, and the distance between the movable plates 4 can be adjusted to facilitate the placement of workpieces into the through holes on the movable plate 4. Several second external gear rings 7 are rotatably installed. Rotating the second external gear rings 7 can drive several arc-shaped plates 8 to rotate, thereby causing the slide rod 9 to slide within the arc-shaped sliding opening. A fixed cylinder is fixedly installed, and the straight plate 10 can be fixedly installed on the fixed cylinder. At this time, the slide rod 9 can also slide within the straight sliding opening, thereby driving the installation rod to move and thus driving the clamping block 11 to move. This allows the distance between each clamping block 11 to be adjusted to clamp and fix workpieces of different diameters, so as to facilitate heat treatment of workpieces of different diameters and expand the application range of the lifting tool.

[0024] Furthermore, an internal gear ring that meshes with several second external gear rings 7 is rotatably installed inside the annular cavity, a first external gear ring 6 is fixedly installed at the bottom of the internal gear ring, and a first gear 5 that meshes with the first external gear ring 6 is rotatably installed inside the annular cavity.

[0025] The first gear 5 is installed, and when the first gear 5 rotates, it meshes with the first external gear ring 6, which in turn drives the internal gear ring to rotate. The internal gear ring meshes with several second external gear rings 7, which in turn drives the several second external gear rings 7 to rotate.

[0026] Furthermore, a pair of bidirectional threaded rods 12 are rotatably installed in both the upper fixed frame 2 and the lower fixed frame 2. The bidirectional threaded rods 12 in the upper fixed frame 2 and the lower fixed frame 2 are fixedly connected. The two pairs of movable plates 4 are screwed onto the bidirectional threaded rods 12, and the movable plates 4 are slidably connected to the fixed rods.

[0027] The distance between the movable plates 4 can be adjusted by rotating the two pairs of bidirectional threaded rods 12 that are installed on the plate together.

[0028] Furthermore, the top fixing plate 1 has a cavity 13, in which a pair of sprockets 14 are rotatably installed. The top of a pair of bidirectional threaded rods 12 in the upper fixing frame 2 extends into the cavity 13 and is fixedly connected to the sprockets 14. The pair of sprockets 14 are driven by a transmission chain 15.

[0029] By providing a cavity 13, a sprocket 14 can be rotatably installed inside the cavity 13. The rotation of one sprocket 14 can drive the transmission chain 15 to drive the other sprocket 14 to rotate, thereby driving the two pairs of bidirectional threaded rods 12 to rotate, which can adjust the distance between each moving plate 4 together.

[0030] Furthermore, a first throttle 16 is rotatably mounted on the top fixed plate 1, and the first throttle 16 is fixedly connected to a sprocket 14.

[0031] The first throttle 16 is installed, and rotating the first throttle 16 can drive the sprocket 14 to rotate.

[0032] Furthermore, each of the movable plates 4 is rotatably mounted with a second throttle 17 for driving the first gear 5 to rotate.

[0033] The first gear 5 can be rotated by rotating the second throttle 17.

[0034] Furthermore, a lifting ring 18 is installed on the top fixed plate 1 to facilitate lifting the lifting device.

[0035] The working principle and usage process of this utility model are as follows: When in use, rotating the first throttle 16 drives one sprocket 14 to rotate, which in turn drives another sprocket 14 to rotate via the transmission chain 15, thereby driving two pairs of bidirectional threaded rods 12 to rotate, thereby adjusting the distance between the moving plates 4 so that the workpiece can be placed in the through hole on the moving plate 4. Rotating the second throttle 17 drives the first gear 5 to rotate, which in turn drives the first external gear ring 6 to rotate, thereby driving the internal gear ring to rotate. The internal gear ring and the second external gear ring 7 rotate, thereby driving the second external gear ring 7 to rotate, thereby driving the arc plate 8 to rotate, thereby driving the slide rod 9 to slide in the arc-shaped slide and the straight slide, thereby driving the mounting rod and the clamping block 11 to move, which can clamp and fix workpieces of different diameters.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A workpiece lifting device for a pit-type carburizing furnace, comprising a fixing plate (1), wherein the fixing plate (1) is a pair, and the pair of fixing plates (1) are fixedly connected by a fixing rod to form a fixing frame (2), wherein the fixing frame (2) is divided into an upper fixing frame (2) and a lower fixing frame (2) in the middle by a partition plate (3), characterized in that, It also includes a movable plate (4); two pairs of movable plates (4) are respectively movably installed in the upper fixed frame (2) and the lower fixed frame (2). The movable plate (4) has several through holes and an annular cavity. The several through holes are connected to the annular cavity. Several second external gear rings (7) are rotatably installed in the annular cavity. Several arc-shaped plates (8) are fixedly installed on the second external gear rings (7). Arc-shaped sliding mouths are opened in the arc-shaped plates (8). Sliding rods (9) are slidably installed in the arc-shaped sliding mouths. A fixed cylinder is fixedly installed in the annular cavity. Several straight plates (10) are fixedly installed on the fixed cylinder. Straight sliding mouths are opened in the straight plates (10). The sliding rods (9) are slidably connected to the straight sliding mouths. An installation rod is fixedly connected to the sliding rods (9). The other end of the installation rod passes through the fixed cylinder and is fixedly installed with a clamping block (11).

2. The workpiece lifting device for a pit-type carburizing furnace according to claim 1, characterized in that, An internal gear ring that meshes with a plurality of second external gear rings (7) is rotatably installed in the annular cavity. A first external gear ring (6) is fixedly installed at the bottom of the internal gear ring. A first gear (5) that meshes with the first external gear ring (6) is rotatably installed in the annular cavity.

3. The workpiece lifting device for a pit-type carburizing furnace according to claim 1, characterized in that, A pair of bidirectional threaded rods (12) are rotatably installed in both the upper fixed frame (2) and the lower fixed frame (2). The bidirectional threaded rods (12) in the upper fixed frame (2) and the lower fixed frame (2) are fixedly connected. The two pairs of movable plates (4) are screwed onto the bidirectional threaded rods (12). The movable plates (4) are slidably connected to the fixed rods.

4. The workpiece lifting device for a pit-type carburizing furnace according to claim 3, characterized in that, The fixed plate (1) located at the top has a cavity (13), in which a pair of sprockets (14) are rotatably installed. The top of a pair of bidirectional threaded rods (12) in the upper fixed frame (2) extends into the cavity (13) and is fixedly connected to the sprockets (14). The pair of sprockets (14) are driven by a transmission chain (15).

5. A workpiece lifting device for a pit-type carburizing furnace according to claim 4, characterized in that, A first throttle (16) is rotatably mounted on the top fixed plate (1), and the first throttle (16) is fixedly connected to a sprocket (14).

6. A workpiece lifting device for a pit-type carburizing furnace according to claim 2, characterized in that, Each of the aforementioned movable plates (4) is rotatably mounted with a second throttle (17) for driving the first gear (5) to rotate.

7. A workpiece lifting device for a pit-type carburizing furnace according to claim 1, characterized in that, A lifting ring (18) is installed on the fixed plate (1) located at the top.

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