Lifting appliance for improving charge quantity of rock drilling bit shank in pit type carburizing furnace

Abstract

The utility model discloses a lifting appliance for increasing the charge quantity of a rock drilling bit shank in a pit type carburizing furnace, relates to the technical field of lifting appliances, and aims to solve the problems that an existing lifting appliance is used for supporting workpieces through an arranged honeycomb hole structure, but is lack of an effective erecting and mounting mechanism in the using process, the height of the lifting appliance is inconvenient to adjust, and the lifting appliance is inconvenient to mount. The drill shank carburizing device comprises a lifting appliance carrying disc, a center connecting seat is welded to the center of the lifting appliance carrying disc, a threaded connecting rod is welded to the upper end of the center connecting seat, a threaded sleeve seat is arranged on the outer wall of the threaded connecting rod, and the threaded connecting rod is movably connected with the threaded sleeve seat in a penetrating mode; the expansion brackets are arranged on the outer wall of the periphery of the lifting appliance carrying disc, the number of the expansion brackets is eight, hinges are arranged at the connecting positions of the eight expansion brackets and the outer wall of the lifting appliance carrying disc, and the expansion brackets are movably connected with the lifting appliance carrying disc through the hinges.

Description

Technical Field

[0001] The utility model relates to the technical field of slings, in particular to a sling for improving the loading capacity of a rock drilling tail in a pit-type carburizing furnace. Background Art

[0002] The drill bit of a rock drill is the part that bears the impact and torque of the rock drill. It should have high toughness and no plastic deformation. The drill tail can be a part of the drill bit or be made into an independent tail rod. The drill tail is mainly used in mining operations. It is made of high-quality alloy steel as the raw material and undergoes an overall carburizing treatment. The drill tail needs to be placed inside a pit carburizing furnace during the carburizing treatment. The drill tail needs to be supported by a sling when being processed in the pit carburizing furnace.

[0003] For example, the announcement number is: CN203295591U (named as a hanger for a pit carburizing furnace), which includes a hanging plate and a hanging rod; wherein, the hanging plate includes an inner iron plate layer and a ceramic layer coated on the iron plate layer; an elliptical hole is provided in the center of the hanging plate; the hanging rod is vertically inserted into the elliptical hole; a hanger head is provided at the bottom end of the hanger, the cross-section of the hanger head is elliptical, and the cross-section of the hanger is circular, and a number of honeycomb holes are evenly distributed on the hanging plate. The hanger of the pit carburizing furnace has a simple structure and is easy to use. It places the workpiece directly on the hanging plate, so that the workpiece is not easy to fall; and the hanging plate has good heat resistance, is not easy to be damaged, and has a long service life.

[0004] The above-mentioned sling supports the workpiece through the honeycomb hole structure, but the sling lacks an effective erection and installation mechanism during use, and the height adjustment of the sling is relatively inconvenient, which affects the efficiency of the carburizing processing of the drill tail. To this end, we provide a sling that increases the loading capacity of the rock drilling drill tail in the pit carburizing furnace. Utility Model Content

[0005] The purpose of the utility model is to provide a sling for increasing the loading capacity of rock drilling tails in a pit-type carburizing furnace, so as to solve the problem proposed in the above-mentioned background technology that the existing sling supports the workpiece by means of a honeycomb hole structure, but the sling lacks an effective erection and installation mechanism during use, and the height adjustment of the sling is relatively inconvenient, which affects the efficiency of the carburizing processing of the tail.

[0006] To achieve the above-mentioned object, the utility model provides the following technical solutions: a sling for increasing the loading capacity of a rock drilling tail in a pit-type carburizing furnace, comprising a sling carrier, a center connector welded to the center of the sling carrier, a threaded connecting rod welded to the upper end of the center connector, a threaded sleeve seat provided on the outer wall of the threaded connecting rod, and the threaded connecting rod and the threaded sleeve seat being movably connected through the threaded connecting rod;

[0007] Also includes:

[0008] Extension brackets are arranged on the outer walls of the spreader carrier plate. There are eight extension brackets. Hinges are provided at the connection positions between the eight extension brackets and the outer walls of the spreader carrier plate. The extension brackets are movably connected to the spreader carrier plate through the hinges.

[0009] A hoisting through-hole is provided inside the hoisting device carrier plate and the expansion bracket, and a drill tail rod is provided inside the hoisting through-hole, and two ends of the drill tail rod are respectively provided with a drill tail end and a threaded end;

[0010] The base screw rod is welded on the outer walls around the threaded sleeve seat. There are four base screw rods. The outer sleeve of the base screw rod is movably provided with an extension sleeve rod, and one end of the extension sleeve rod is provided with an end block.

[0011] Preferably, an anti-slip rotating head is welded on the inner wall of one side of the end block, and an internal rotating groove is provided at the rotational connection position between the anti-slip rotating head and the extension sleeve rod, and the internal rotating groove and the extension sleeve rod are an integrated structure.

[0012] Preferably, a supporting bottom block is provided on the outer wall of the end block, and the supporting bottom block and the end block are an integral structure.

[0013] Preferably, an inner screw cavity is provided inside the extension sleeve, the inner screw cavity and the extension sleeve are an integrated structure, and the extension sleeve is movably connected to the base screw guide through the inner screw cavity.

[0014] Preferably, the shank end and the threaded end are both an integral structure with the shank rod, and the size of the shank end is larger than the diameter of the lifting perforation.

[0015] Preferably, a top turntable is provided at the upper end of the threaded connecting rod, and the top turntable and the threaded connecting rod are an integrated structure.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. When the sling of the utility model is erected and installed, the base screw rod is movably connected with the inner screw cavity, and the extension sleeve rod is rotated to extend outward to adjust the extension sleeve rod, so that the four extension sleeve rods are erected to the furnace mouth position of the pit carburizing furnace, and the support bottom block on the end block abuts the furnace top, and finally the threaded connecting rod is driven to perform lifting and guiding activities inside the threaded sleeve seat by rotating the top turntable, thereby driving the sling carrier plate to perform lifting and lowering activities, which is convenient for feeding materials in the rock drilling drill tail carburizing processing operation, improves the carburizing processing efficiency of the pit carburizing furnace, overcomes the existing sling that supports the workpiece by the honeycomb hole structure, but the sling lacks an effective erection and installation mechanism during use, and the height adjustment of the sling is relatively inconvenient, resulting in affecting the efficiency of the drill tail carburizing processing.

[0018] 2. In order to increase the loading capacity of the pit carburizing furnace, the eight expansion frames are movably connected to the outer wall of the sling carrier through hinges, so that the carrying capacity of the sling is increased and the expansion sling is easy to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a sling for increasing the loading capacity of a rock drill tail in a pit-type carburizing furnace according to the present invention;

[0020] Figure 2 This is a schematic diagram of the connection structure between the base screw and the extension sleeve rod of the utility model;

[0021] Figure 3 This is a schematic diagram of the end block structure of the utility model;

[0022] Figure 4 This is an enlarged schematic diagram of the structure of part A of the present utility model;

[0023] In the figure: 1. Lifting device carrier; 2. Extension bracket; 3. Lifting hole; 4. Hinge; 5. Center connector; 6. Threaded connecting rod; 7. Threaded sleeve seat; 8. Base screw; 9. Extension sleeve; 10. End block; 11. Top turntable; 12. Inner screw cavity; 13. Inner connecting groove; 14. Anti-slip swivel; 15. Support bottom block; 16. Drill tail rod; 17. Drill tail end; 18. Threaded end. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] See also Figure 1-4 The utility model provides an embodiment: a sling for improving the loading capacity of a rock drilling tail in a pit carburizing furnace, comprising a sling carrier 1, a center seat 5 welded to the center of the sling carrier 1, a threaded connecting rod 6 welded to the upper end of the center seat 5, a threaded sleeve seat 7 provided on the outer wall of the threaded connecting rod 6, and the threaded connecting rod 6 and the threaded sleeve seat 7 are movably connected through the threaded connecting rod 6;

[0026] Also includes:

[0027] Extension brackets 2 are arranged on the outer walls of the spreader carrier 1. There are eight extension brackets 2. Hinges 4 are provided at the connection positions between the eight extension brackets 2 and the outer walls of the spreader carrier 1. The extension brackets 2 are movably connected to the spreader carrier 1 through the hinges 4.

[0028] A lifting through-hole 3 is provided inside the lifting device carrier plate 1 and the expansion bracket 2, and a drill tail rod 16 is provided inside the lifting through-hole 3. The two ends of the drill tail rod 16 are respectively provided with a drill tail end 17 and a threaded end 18;

[0029] The base screw rod 8 is welded on the outer wall around the threaded sleeve seat 7. There are four base screw rods 8. The outer part of the base screw rod 8 is movably sleeved with an extension sleeve rod 9. One end of the extension sleeve rod 9 is provided with an end block 10.

[0030] During use, when the sling is erected and installed, the base screw and the inner screw cavity are movably connected, and the extension sleeve rod is rotated to extend outward to adjust the four extension sleeve rods so that the four extension sleeve rods are erected to the furnace mouth position of the well-type carburizing furnace, and the supporting bottom block on the end block abuts against the furnace top. Finally, the threaded connecting rod is driven to perform lifting and guiding activities inside the threaded sleeve seat by rotating the top turntable, thereby driving the sling carrier plate to perform lifting and lowering activities, which is convenient for feeding materials in the carburizing processing operation of the rock drilling tail.

[0031] See also Figure 2 An anti-slip rotating head 14 is welded on the inner wall of one side of the end block 10, and an internal rotation groove 13 is provided at the rotation connection position between the anti-slip rotating head 14 and the extension sleeve rod 9. The internal rotation groove 13 and the extension sleeve rod 9 are an integrated structure. The anti-slip rotating head 14 welded on the inner wall of one side of the end block 10 plays the role of limiting the rotation and preventing it from slipping off with the internal rotation groove 13.

[0032] See also Figure 3 A supporting bottom block 15 is provided on the outer wall of the end block 10. The supporting bottom block 15 and the end block 10 are an integral structure. The supporting bottom block 15 provided on the outer wall of the end block 10 serves to facilitate the support against the furnace top.

[0033] See also Figure 2 An inner screw cavity 12 is provided inside the extension sleeve 9. The inner screw cavity 12 and the extension sleeve 9 are an integrated structure. The extension sleeve 9 is movably connected to the base screw 8 through the inner screw cavity 12. The inner screw cavity 12 provided inside the extension sleeve 9 plays the role of corresponding connection with the base screw 8.

[0034] See also Figure 4 The drill tail end 17 and the threaded end 18 are both integrated with the drill tail rod 16 , and the size of the drill tail end 17 is larger than the diameter of the hoisting through-hole 3 .

[0035] See also Figure 1 The upper end of the threaded connecting rod 6 is provided with a top turntable 11, which is an integral structure with the threaded connecting rod 6. The top turntable 11 provided at the upper end of the threaded connecting rod 6 serves to facilitate the operation of the threaded connecting rod 6 to rotate.

[0036] Working principle: When in use, in order to increase the loading capacity of the pit carburizing furnace, the eight expansion frames 2 are movably connected to the outer wall of the sling carrier 1 through the hinges 4, so that the carrying capacity of the sling can be increased. The rock drilling tail is composed of a tail rod 16, a tail end 17 and a threaded end 18. Then the tail required for rock drilling is placed inside the lifting through-hole 3. The tail rod 17 passes through the lifting through-hole 3. The lifting is limited by the tail end 17, and the threaded end 18 faces downward. When the sling is erected and installed, the base screw 8 and the inner screw cavity 12 are connected. The movable connection is rotated to extend and adjust the extension sleeve rod 9 outward, so that the four extension sleeve rods 9 are erected at the furnace mouth position of the pit carburizing furnace, and abut the furnace top through the supporting bottom block 15 on the end block 10. Finally, the threaded connecting rod 6 is driven to perform lifting and guiding activities inside the threaded sleeve seat 7 by rotating the top turntable 11, and then the sling carrier 1 is driven to perform lifting and lowering activities, which is convenient for the feeding and taking of materials in the carburizing processing operation of the rock drilling tail, improves the carburizing processing efficiency of the pit carburizing furnace, and completes the use of the sling to increase the loading capacity of the rock drilling tail in the pit carburizing furnace.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A sling for increasing the loading capacity of rock drill tails in a pit carburizing furnace, comprising a sling carrier (1), a center seat (5) welded to the center of the sling carrier (1), a threaded connecting rod (6) welded to the upper end of the center seat (5), a threaded sleeve seat (7) provided on the outer wall of the threaded connecting rod (6), and the threaded connecting rod (6) and the threaded sleeve seat (7) being movably connected through the threaded connecting rod (6); Its characteristics are: Also includes: Extension brackets (2) are arranged on the outer walls of the sling carrier (1), and eight extension brackets (2) are provided. Hinges (4) are provided at the connection positions between the eight extension brackets (2) and the outer walls of the sling carrier (1). The extension brackets (2) are movably connected to the sling carrier (1) via the hinges (4); A hoisting through hole (3) is provided inside the hoisting device carrier plate (1) and the expansion bracket (2), and a drill tail rod (16) is provided inside the hoisting through hole (3), and two ends of the drill tail rod (16) are respectively provided with a drill tail end (17) and a threaded end (18); The base screw rod (8) is welded and arranged on the outer walls around the threaded sleeve seat (7). Four base screw rods (8) are arranged. An extension sleeve rod (9) is movably arranged on the outer sleeve of the base screw rod (8). An end block (10) is arranged at one end of the extension sleeve rod (9).

2. A sling for increasing the loading capacity of a rock drilling tail in a pit carburizing furnace according to claim 1, characterized in that: An anti-slip rotating head (14) is welded on the inner wall of one side of the end block (10), and an internal rotation groove (13) is provided at the rotation connection position between the anti-slip rotating head (14) and the extension sleeve rod (9), and the internal rotation groove (13) and the extension sleeve rod (9) are an integrated structure.

3. The sling for increasing the loading capacity of a rock drilling tail in a pit carburizing furnace according to claim 1, characterized in that: A supporting bottom block (15) is provided on the outer wall of the end block (10), and the supporting bottom block (15) and the end block (10) are an integrated structure.

4. The sling for increasing the loading capacity of a rock drilling tail in a pit carburizing furnace according to claim 1, characterized in that: An inner screw cavity (12) is provided inside the extension sleeve (9), and the inner screw cavity (12) and the extension sleeve (9) are an integrated structure. The extension sleeve (9) is movably connected to the base screw rod (8) through the inner screw cavity (12).

5. The sling for increasing the loading capacity of a rock drilling tail in a pit carburizing furnace according to claim 1, characterized in that: The drill tail end (17) and the threaded end (18) are both integrated with the drill tail rod (16), and the size of the drill tail end (17) is larger than the diameter of the hoisting through hole (3).

6. The sling for increasing the loading capacity of a rock drilling tail in a pit carburizing furnace according to claim 1, characterized in that: A top turntable (11) is provided at the upper end of the threaded connecting rod (6), and the top turntable (11) and the threaded connecting rod (6) are an integrated structure.

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