Well type carburizing furnace in-out furnace hoisting tooling

Abstract

The utility model relates to a kind of well type carburizing furnace in-and-out furnace hoisting tool, belong to pin bush production technical field.The upper end of hanger rod is fixedly connected with hanger, the bottom end of each group of hanger rod is provided with a circular chuck, the outer wall of base is provided with the clamping seat matched with circular chuck, U line clamping groove is between the clamping seat and base, the groove width of U line clamping groove is greater than the diameter of hanger rod, and less than the diameter of circular chuck, multiple clamping seats and multiple circular chucks are one-to-one correspondence, the upper surface of base is placed with material barrel.The utility model has the following beneficial effects: multiple clamping seats and multiple circular chucks are one-to-one correspondence, the quick assembly and split between hanger rod and base can be realized, so that well type carburizing furnace in-and-out furnace hoisting tool has the advantages of quick lifting and good lifting effect, thereby saving in-and-out furnace time, reduce production risk.The material barrel is metal material, its cross section is circular, and both ends are open, which facilitates more pin bushes to be loaded.

Description

Technical Field

[0001] This utility model relates to a hoisting tool for loading and unloading a pit-type carburizing furnace, belonging to the field of pin sleeve production technology. Background Technology

[0002] Stepped pin sleeves, with a hollow inner hole and a stepped outer wall, are components used in conjunction with pins. They are widely used in construction machinery (excavators, bulldozers), automobiles, trains, ships, and other applications with movable arms. During the manufacturing process, pin sleeves require carburizing treatment.

[0003] During the carburizing process of pin sleeves, it is necessary to use lifting tools to hoist the pin sleeves into or out of the pit-type carburizing furnace. Current technology is not comprehensive and has the following drawbacks: traditional lifting tools use bolt-fixed or welded structures, and special tools are required for disassembly and assembly. It is impossible to quickly assemble and disassemble the lifting rod and the base, and each entry and exit from the furnace takes a long time.

[0004] To solve one of the above problems, there is an urgent need for a hoisting device for loading and unloading a pit-type carburizing furnace. Utility Model Content

[0005] Based on the shortcomings of the existing technology, the technical problem to be solved by this utility model is: how to achieve rapid assembly and disassembly between the lifting rod and the base, so that the hoisting tool for entering and exiting the pit-type carburizing furnace has the advantages of rapid lifting and good lifting effect, thereby saving the time of entering and exiting the furnace and reducing production risks. To this end, a hoisting tool for entering and exiting the pit-type carburizing furnace is provided.

[0006] The hoisting fixture for loading and unloading a pit-type carburizing furnace according to this utility model includes a base and a hanger above the base. The hanger has a lifting lug in the middle. The fixture is characterized by further including multiple sets of lifting rods arranged around the same vertical center line. The upper end of each lifting rod is fixedly connected to the hanger. Each set of lifting rods has a circular chuck at its bottom end. The outer wall of the base has a chuck seat that mates with the circular chuck. A U-shaped groove exists between the chuck seat and the base. The width of the U-shaped groove is greater than the diameter of the lifting rod but smaller than the diameter of the circular chuck. Each set of chuck seats corresponds one-to-one with each set of circular chucks. A material bucket is placed on the upper surface of the base.

[0007] First, place the material bucket on the upper surface of the base, then stack the pins to be carburized into the material bucket. The lifting lugs are connected to the hooks of the hoisting equipment. The hoisting equipment is used to lift and move the components of the hanger and the rod. When the hanger moves to the direction of the base, the height of the hanger is lowered, and the bottom end of the rod is moved to the position of the corresponding chuck until the height of the circular chuck is lower than the height of the chuck. Then, the hanger is rotated so that the end of the rod near the circular chuck is engaged in the U-shaped groove. The width of the U-shaped groove is greater than the diameter of the rod and less than the diameter of the circular chuck. The hoisting equipment is used to lift the components of the hanger and the rod again. The circular chuck and the chuck cooperate to lift the base. The hoisting equipment is used to transfer the hoisting fixture described in this application as a whole to the pit-type carburizing furnace for carburizing.

[0008] Multiple sets of clamps correspond one-to-one with multiple sets of circular chucks, enabling rapid assembly and disassembly between the lifting rod and the base. This gives the hoisting tooling for the pit-type carburizing furnace the advantages of rapid lifting and good lifting effect, thereby saving furnace entry and exit time and reducing production risks.

[0009] In any of the above embodiments, it is preferred that the lifting rod is a solid rod, the upper end of the lifting rod is welded to the lifting frame, and the bottom end of the lifting rod is welded to a circular chuck. The lifting rod and the circular chuck are coaxially arranged, and the outer diameter of the circular chuck is larger than the outer diameter of the lifting rod. This ensures a reliable connection and stable lifting of the object.

[0010] In any of the above embodiments, it is preferred that the material bucket is made of metal, has a circular cross-section, and is open at both ends. This facilitates the insertion of a larger number of pin sleeves.

[0011] In any of the above embodiments, it is preferred that four sets of card holders are provided, arranged around the vertical center line of the base with an angle of 90 degrees between adjacent sets, and four sets of lifting rods are provided accordingly. This ensures reliable connection and stable lifting of objects.

[0012] In any of the above embodiments, it is preferred that the hanger is a cross-shaped hanger, including perpendicularly intersecting horizontal arms A and B. A set of lifting rods is connected to each end of horizontal arm A, and a set of lifting rods is installed at each end of horizontal arm B. The lifting lugs are installed at the intersection of horizontal arms A and B. This ensures reliable connection and stable lifting of the object.

[0013] In any of the above solutions, it is preferred that the cross arm A and the cross arm B are of equal length.

[0014] In any of the above solutions, it is preferred that the base has multiple sets of weight-reduction holes evenly distributed on it.

[0015] In any of the above embodiments, it is preferred that the outer wall of the base is provided with a clearance notch that cooperates with the circular chuck.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The hoisting fixture for loading and unloading the pit-type carburizing furnace described in this utility model has multiple sets of clamps and multiple sets of circular chucks that correspond one-to-one, enabling rapid assembly and disassembly between the lifting rod and the base. This gives the hoisting fixture for loading and unloading the pit-type carburizing furnace the advantages of rapid lifting and good lifting effect, thereby saving time in and out of the furnace and reducing production risks.

[0018] The hoisting fixture for loading and unloading the pit-type carburizing furnace described in this utility model has a metal bucket with a circular cross-section and open ends, which facilitates the loading of a large number of pin sleeves.

[0019] The hoisting fixture for loading and unloading the pit-type carburizing furnace described in this utility model has a cross-shaped hanger, including two perpendicularly intersecting horizontal arms A and B. A set of lifting rods is connected to each end of horizontal arm A, and a set of lifting rods is installed at each end of horizontal arm B. The lifting lugs are installed at the intersection of horizontal arms A and B. The connection is reliable, ensuring stable lifting of the object. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0021] Figure 1 This is a schematic diagram of the usage state of this utility model. Figure 1 ;

[0022] Figure 2 for Figure 1 Exploded view;

[0023] Figure 3 This is a schematic diagram of the structure of this utility model (the state where the lifting rod is separated from the base).

[0024] In the diagram: 1. Lifting lug; 2. Hanger; 3. Lifting rod; 4. Base; 5. Material bucket; 6. Pin sleeve; 7. Circular chuck; 8. Card seat; 9. U-shaped card slot; 10. Weight reduction hole; 11. Avoidance notch. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings: The present invention will be further described below through specific embodiments, but it is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0026] Example 1, as Figure 1-2As shown, the hoisting fixture for loading and unloading a pit-type carburizing furnace includes a base 4 and a hanger 2 located above the base 4. The hanger 2 has a lifting lug 1 in the middle and also includes multiple sets of lifting rods 3 arranged around the same vertical center line. The upper end of each set of lifting rods 3 is fixedly connected to the hanger 2. A circular chuck 7 is provided at the bottom end of each set of lifting rods 3. A chuck seat 8 that cooperates with the circular chuck 7 is provided on the outer wall of the base 4. A U-shaped groove 9 is provided between the chuck seat 8 and the base 4. The groove width of the U-shaped groove 9 is greater than the diameter of the lifting rod 3 and smaller than the diameter of the circular chuck 7. The multiple sets of chuck seats 8 correspond one-to-one with the multiple sets of circular chucks 7. A material bucket 5 is placed on the upper surface of the base 4.

[0027] First, place the material bucket 5 on the upper surface of the base 4, then stack the pin sleeves 6 to be carburized into the material bucket 5. The lifting lug 1 is connected to the hook of the hoisting equipment. Use the hoisting equipment to lift and move the components of the hanger 2 and the lifting rod 3. When the hanger 2 moves to the direction of the base 4, then lower the height of the hanger 2 and move the bottom end of the lifting rod 3 to the position of the corresponding card seat 8 until the height of the circular chuck 7 is lower than the height of the card seat 8. Then rotate the hanger 2 so that the end of the lifting rod 3 near the circular chuck 7 is inserted into the U-shaped slot 9. Refer to Figure 1 In the state where the U-shaped slot 9 has a width greater than the diameter of the lifting rod 3 and less than the diameter of the circular chuck 7, the components of the lifting frame 2 and the lifting rod 3 are lifted again using the lifting equipment. The circular chuck 7 cooperates with the chuck seat 8 to lift the base 4. The lifting equipment is then used to transfer the entire lifting fixture described in this application to the pit-type carburizing furnace for carburizing processing.

[0028] When the hoisting fixture described in this application is lifted out of the pit-type carburizing furnace, the base 4 is supported on the ground. Then, the height of the lifting frame 2 is lowered, and the bottom end of the lifting rod 3 is moved to the position of the corresponding chuck 8 until the height of the circular chuck 7 is lower than the height of the chuck 8. Then, the lifting frame 2 is rotated, and the lifting rod and the base can be quickly separated. Figure 3 The state.

[0029] Multiple sets of clamps correspond one-to-one with multiple sets of circular chucks, enabling rapid assembly and disassembly between the lifting rod and the base. This gives the hoisting tooling for the pit-type carburizing furnace the advantages of rapid lifting and good lifting effect, thereby saving furnace entry and exit time and reducing production risks.

[0030] Example 2, as Figure 1-2As shown, the hoisting fixture for loading and unloading a pit-type carburizing furnace includes a base 4 and a hanger 2 located above the base 4. The hanger 2 has a lifting lug 1 in the middle and also includes multiple sets of lifting rods 3 arranged around the same vertical center line. The upper end of each set of lifting rods 3 is fixedly connected to the hanger 2. A circular chuck 7 is provided at the bottom end of each set of lifting rods 3. A chuck seat 8 that cooperates with the circular chuck 7 is provided on the outer wall of the base 4. A U-shaped groove 9 is provided between the chuck seat 8 and the base 4. The groove width of the U-shaped groove 9 is greater than the diameter of the lifting rod 3 and smaller than the diameter of the circular chuck 7. The multiple sets of chuck seats 8 correspond one-to-one with the multiple sets of circular chucks 7. A material bucket 5 is placed on the upper surface of the base 4.

[0031] Furthermore, referring to Figure 3 The lifting rod 3 is a solid rod. Its upper end is welded to the lifting frame 2, and its lower end is welded to a circular chuck 7. The lifting rod 3 and the circular chuck 7 are coaxially arranged, and the outer diameter of the circular chuck 7 is larger than the outer diameter of the lifting rod 3. This connection ensures reliable lifting and stable operation of the object.

[0032] Furthermore, the material bucket 5 is made of metal, has a circular cross-section, and is open at both ends. This facilitates the insertion of a larger number of pin sleeves 6.

[0033] Furthermore, four sets of the card holders 8 are arranged around the vertical center line of the base 4, with the included angle between adjacent sets being 90 degrees, and four sets of the lifting rods 3 are correspondingly arranged. This ensures reliable connection and stable lifting of objects.

[0034] Furthermore, the hanger 2 is a cross-shaped hanger, including perpendicularly intersecting horizontal arms A and B. A set of lifting rods 3 is connected to each end of horizontal arm A, and a set of lifting rods 3 is installed at each end of horizontal arm B. The lifting lug 1 is installed at the intersection of horizontal arms A and B. This connection ensures reliable operation and stable lifting of the object.

[0035] Furthermore, the cross arms A and B are of equal length.

[0036] Furthermore, multiple sets of weight-reducing holes 10 are evenly provided on the base 4.

[0037] Furthermore, the outer wall of the base 4 is provided with an avoidance notch 11 that cooperates with the circular chuck 7.

[0038] The hoisting fixture for loading and unloading the pit-type carburizing furnace described in this utility model has multiple sets of clamps and multiple sets of circular chucks that correspond one-to-one, enabling rapid assembly and disassembly between the lifting rod and the base. This gives the hoisting fixture for loading and unloading the pit-type carburizing furnace the advantages of rapid lifting and good lifting effect, thereby saving time in and out of the furnace and reducing production risks.

[0039] The hoisting fixture for loading and unloading the pit-type carburizing furnace described in this utility model has a metal bucket with a circular cross-section and open ends, which facilitates the loading of a large number of pin sleeves.

[0040] The hoisting fixture for loading and unloading the pit-type carburizing furnace described in this utility model has a cross-shaped hanger, including two perpendicularly intersecting horizontal arms A and B. A set of lifting rods is connected to each end of horizontal arm A, and a set of lifting rods is installed at each end of horizontal arm B. The lifting lugs are installed at the intersection of horizontal arms A and B. The connection is reliable, ensuring stable lifting of the object.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

[0042] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A hoisting fixture for loading and unloading a pit-type carburizing furnace, comprising a base and a lifting frame positioned above the base, wherein a lifting lug is provided in the middle of the lifting frame, characterized in that: It also includes multiple sets of lifting rods arranged around the same vertical center line. The upper end of each lifting rod is fixedly connected to the hanger. Each set of lifting rods has a circular chuck at its bottom end. The outer wall of the base has a chuck seat that mates with the circular chuck. There is a U-shaped groove between the chuck seat and the base. The width of the U-shaped groove is greater than the diameter of the lifting rod and smaller than the diameter of the circular chuck. The multiple sets of chuck seats correspond one-to-one with the multiple sets of circular chucks. A material bucket is placed on the upper surface of the base.

2. The hoisting and unloading fixture for the pit-type carburizing furnace according to claim 1, characterized in that, The boom is a solid rod. The upper end of the boom is welded to the hanger. The bottom end of the boom is welded to a circular chuck. The boom and the circular chuck are coaxially arranged, and the outer diameter of the circular chuck is larger than the outer diameter of the boom.

3. The hoisting and unloading fixture for the pit-type carburizing furnace according to claim 2, characterized in that, The material bucket is made of metal, has a circular cross-section, and is open at both ends.

4. The hoisting and unloading fixture for the pit-type carburizing furnace according to claim 3, characterized in that, The card holders are provided in four sets, arranged around the vertical center line of the base with an angle of 90 degrees between adjacent ones, and the hanging rods are provided in four sets accordingly.

5. The hoisting and unloading fixture for the pit-type carburizing furnace according to claim 4, characterized in that, The hanger is a cross-shaped hanger, including a horizontal arm A and a horizontal arm B that intersect perpendicularly. A set of lifting rods is connected to each end of the horizontal arm A, and a set of lifting rods is installed at each end of the horizontal arm B. The lifting lug is installed at the intersection of the horizontal arm A and the horizontal arm B.

6. The hoisting and unloading fixture for the pit-type carburizing furnace according to claim 5, characterized in that, The cross arms A and B are of equal length.

7. The hoisting and unloading fixture for the pit-type carburizing furnace according to claim 6, characterized in that, The base has multiple sets of weight-reducing holes evenly spaced on it.

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