Steel chisel easy to install

Abstract

The utility model discloses a steel chisel easy to install, which relates to the technical field of residual steel chisels and comprises a chisel rod and a driving shaft, the chisel rod is connected with the driving shaft through a quick-plug component, key grooves are annularly arranged at the end of the chisel rod corresponding to the driving shaft, a guide groove is arranged between every two adjacent key grooves, and a guide block is annularly arranged at the end of the driving shaft corresponding to the chisel rod. The guide block is movably connected into the guide groove, the quick insertion assembly comprises a fixed sleeve and a movable sleeve, the center of the fixed sleeve and the center of the movable sleeve are collinear, and the fixed sleeve is fixedly installed on the driving shaft. According to the scheme, through the arrangement of the quick insertion assembly, the limiting key is clamped into the key groove, the axial position of the chisel rod can be effectively limited through clamping of the limiting key, the installation efficiency of the steel chisel is further improved, assistance of bolts and tools is not needed, rusting is avoided, and use is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of steel chisels, in particular to a steel chisel which is easy to install. Background Art

[0002] Residues, burrs, and other foreign matter on the surface of continuous casting billets, ingots, and electric furnace thresholds need to be cleaned. This is usually done with a flame cleaning gun, plasma gun, or electric pick. When using an electric pick, the chisel is mounted in the pick's clip. The pick presses against the chisel head, causing the chisel to vibrate back and forth to achieve the cleaning effect.

[0003] In the prior art, the connection between the steel chisel and the drive shaft of the electric pick requires bolts. This bolt-assisted connection not only slows down the installation and fixation of the steel chisel, reducing the efficiency of steel chisel replacement, but also the threaded connection is prone to rust and requires tools, making it difficult to widely use. To address this issue, we propose a steel chisel that is easy to install. Utility Model Content

[0004] The purpose of the utility model is to provide a steel chisel that is easy to install, so as to solve the problem that in the prior art proposed in the above background technology, the connection and fixation of the steel chisel and the drive shaft of the electric pick need to be assisted by bolts, and the bolt-assisted connection method not only makes the installation and fixation speed of the steel chisel slow and reduces the replacement efficiency of the steel chisel; the threaded connection method is also prone to rust and requires tool assistance, which is not conducive to popularization and use.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: an easily installed steel chisel, comprising a chisel rod and a drive shaft, the chisel rod and the drive shaft being connected by a quick-insert assembly, a keyway being provided in an annular shape at the end of the chisel rod corresponding to the drive shaft, guide grooves being provided between adjacent key grooves, a guide block being provided in an annular shape at the end of the drive shaft corresponding to the chisel rod, the guide block being movably connected to the interior of the guide groove;

[0006] The quick-connect assembly includes a fixed sleeve and a movable sleeve, the centers of the fixed sleeve and the movable sleeve are collinear, and the fixed sleeve is fixedly installed on the drive shaft, the inner side of the fixed sleeve is provided with a clamping groove in the form of an annular shape, and the outer side of the movable sleeve is provided with a clamping block in the form of an annular shape, and the clamping block is movably connected to the inside of the clamping groove, and the inside of the movable sleeve is symmetrically provided with arc-shaped plates, and guide rods are provided between adjacent arc-shaped plates, and a return spring is sleeved on the guide rods, and limit keys are fixedly installed on the opposite ends of adjacent guide rods, and the limit keys are movably connected in the key slots.

[0007] Preferably, the depth of the clamping groove is greater than 1 / 2 of the length of the clamping block, and the number of the clamping blocks is equal to the number of the clamping grooves.

[0008] Preferably, a groove for engaging a reset spring is provided on the drive shaft.

[0009] Preferably, the center lines of the guide rod and the chisel rod are perpendicular to each other, and the guide rod is movably connected to the chisel rod.

[0010] Preferably, an inclined arc surface is provided at the end portion of the adjacent arc-shaped plate corresponding to the drive shaft, and the arc-shaped plate is provided on the outer side of the drive shaft.

[0011] Preferably, the inner and outer positions of the arc-shaped plate and the limit key correspond to each other, and the limit key is arranged on the inner side of the drive shaft.

[0012] Preferably, the movable sleeve is provided with a tapered groove at the end portion corresponding to the chisel rod, and the symmetrical arc-shaped plate is clamped on the inner side of the tapered groove.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] This easy-to-install steel chisel is constructed by installing a quick-insert assembly on the drive shaft of an electric pick. During the installation of the chisel rod on the drive shaft of the electric pick, the reset spring is activated, causing the guide rod to drive the limit key to snap into the keyway. This facilitates the insertion of the chisel rod into the drive shaft. When the chisel rod is inserted into the drive shaft and cannot be inserted further, the engaging block is engaged with the engaging slot, causing the movable sleeve to move from top to bottom within the fixed sleeve. The movement of the movable sleeve drives the symmetrically arranged arc plates to move from outside to inside simultaneously. The movement of the arc plates compresses the reset spring, and the limit key is engaged into the keyway through the connecting action of the guide rod. The engagement of the limit key effectively limits the axial position of the chisel rod, further improving the installation efficiency of the steel chisel. No bolts or tools are required, preventing rust and making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the utility model in the waiting-to-connect state;

[0016] Figure 2 This is a schematic diagram of the connection between the drive shaft and the quick-connect assembly of the utility model;

[0017] Figure 3 For the utility model Figure 2 Schematic diagram of the cross-section state;

[0018] Figure 4 This is a schematic diagram of the chisel rod installation state of the utility model;

[0019] Figure 5 For the utility model Figure 4 Enlarged view of point M.

[0020] In the figure: 1. Chisel rod; 11. Keyway; 12. Guide groove; 2. Drive shaft; 22. Guide block; 3. Quick-insert assembly; 31. Fixed sleeve; 32. Snap-in groove; 33. Movable sleeve; 34. Snap-in block; 35. Arc plate; 36. Guide rod; 37. Limit key; 38. Return spring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example: See Figure 1-5 The present utility model provides a technical solution: an easy-to-install steel chisel. This solution addresses the existing problem that the steel chisel and the drive shaft of an electric pick must be connected and fixed with bolts. This bolt-assisted connection method not only slows down the installation and fixation of the steel chisel, reducing the efficiency of steel chisel replacement, but also the threaded connection method is prone to rusting and requires tools, which is not conducive to widespread use. The specific solution is as follows: It includes a chisel rod 1 and a drive shaft 2, wherein the drive shaft 2 is fixedly mounted to the power shaft of the electric pick, and the centers of the chisel rod 1 and the drive shaft 2 are collinear.

[0023] See also Figure 1-3 The chisel rod 1 and the drive shaft 2 are connected via a quick-connect assembly 3. A keyway 11 is provided in an annular shape at the end of the chisel rod 1 corresponding to the drive shaft 2. Guide grooves 12 are provided between adjacent keyways 11. A guide block 22 is provided in an annular shape at the end of the drive shaft 2 corresponding to the chisel rod 1. The guide block 22 is movably connected to the guide groove 12. The quick-connect assembly 3 enables quick connection between the chisel rod 1 and the drive shaft 2. By engaging the guide block 22 in the guide groove 12, the chisel rod 1 and the drive shaft 2 are prevented from rotating relative to each other.

[0024] Specifically, the quick-connect assembly 3 comprises a fixed sleeve 31 and a movable sleeve 33. The movable sleeve 33 is provided with a tapered groove at the end corresponding to the chisel rod 1, and a symmetrical curved plate 35 is snapped onto the inner side of the tapered groove. The centers of the fixed sleeve 31 and the movable sleeve 33 are collinear, and the fixed sleeve 31 is fixedly mounted on the drive shaft 2. The tapered groove in the movable sleeve 33 facilitates the snapping of the movable sleeve 33 onto the curved plate 35.

[0025] Furthermore, a snap-fit ​​groove 32 is provided in an annular shape on the inner side of the fixed sleeve 31, and a snap-fit ​​block 34 is provided in an annular shape on the outer side of the movable sleeve 33. The depth of the snap-fit ​​groove 32 is greater than half the length of the snap-fit ​​block 34, and the number of the snap-fit ​​blocks 34 and the snap-fit ​​groove 32 is equal. The snap-fit ​​blocks 34 are movably connected to the interior of the snap-fit ​​groove 32. By making the snap-fit ​​blocks 34 movably connected to the interior of the snap-fit ​​groove 32, the movable sleeve 33 can be easily moved upward or downward along the axis of the drive shaft 2, thereby engaging or releasing the curved plate 35 as needed.

[0026] See also Figure 3 、 Figure 4 and Figure 5 Inside the movable sleeve 33, curved plates 35 are symmetrically positioned. Adjacent curved plates 35 have inclined curved surfaces corresponding to the ends of the drive shaft 2. The curved plates 35 are positioned outside the drive shaft 2. In the initial position, the distance between the curved plates 35 and the outer surface of the drive shaft 2 is at its maximum. This position facilitates insertion of the chisel rod 1 into the drive shaft 2.

[0027] Furthermore, guide rods 36 are disposed between adjacent curved plates 35. Return springs 38 are sleeved onto the guide rods 36, and a groove is provided on the drive shaft 2 for engaging the return springs 38. Limiting keys 37 are fixedly mounted on opposite ends of the adjacent guide rods 36. The curved plates 35 and the limiting keys 37 correspond in interior and exterior positions, and the limiting keys 37 are located on the inner side of the drive shaft 2. The return springs 38 enable the guide rods 36 to initially engage the limiting keys 37 within the keyway 11, facilitating insertion of the chisel rod 1 into the drive shaft 2. The groove provided on the drive shaft 2 for engaging the return springs 38 facilitates placement of the return springs 38 and provides sufficient storage space for them.

[0028] In this embodiment, the limit key 37 is movably connected to the keyway 11. The center lines of the guide rod 36 and the chisel rod 1 are perpendicular to each other, and the guide rod 36 is movably plugged into the chisel rod 1. When the chisel rod 1 is installed on the drive shaft 2 of the electric pick, the reset spring 38 is configured to initially cause the guide rod 36 to drive the limit key 37 to engage the key slot 11, facilitating insertion of the chisel rod 1 into the drive shaft 2. During insertion, the guide block 22 and the guide slot 12 align left and right, preventing relative rotation between the chisel rod 1 and the drive shaft 2. When the chisel rod 1 is inserted into the drive shaft 2 and cannot be inserted further, the engaging block 34 engages the engaging slot 32, causing the movable sleeve 33 to move from top to bottom within the fixed sleeve 31. The movement of the movable sleeve 33 drives the symmetrically arranged curved plates 35 to simultaneously move from outside to inside. The curved plates 35 move, compressing the reset spring 38. The guide rod 36, in conjunction with the limit key 37, engages the key slot 11. The engagement of the limit key 37 effectively limits the axial position of the chisel rod 1, further improving the installation efficiency of the steel chisel.

[0029] This kind of steel chisel which is easy to install, when the chisel rod 1 is installed on the driving shaft 2 of the electric pick, the setting of the reset spring 38 can make the guide rod 36 drive the limit key 37 to be clamped into the key groove 11 in the initial state, at this time, it is convenient for the chisel rod 1 to be inserted into the driving shaft 2; in this state, it is only necessary to make the left and right positions of the guide block 22 and the guide groove 12 correspond to each other, so that the chisel rod 1 can be quickly inserted into the driving shaft 2 of the electric pick; when the chisel rod 1 is inserted into the driving shaft 2 and cannot be plugged in further, the clamping block 34 is clamped into the clamping groove 32, so that the movable sleeve 33 moves from top to bottom inside the fixed sleeve 31. Through the movement of the movable sleeve 33, the symmetrically arranged arc plates 35 can be driven to move from outside to inside at the same time. The movement of the arc plates 35 compresses the reset spring 38. Through the connection of the guide rod 36, the limit key 37 is snapped into the key slot 11. At this time, the movable sleeve 33 is rotated so that the positions of the snap block 34 and the snap slot 32 are staggered, so that the limit key 37 can always be snapped into the key slot 11. Through the snapping of the limit key 37, the axial position of the chisel rod 1 can be effectively limited, further improving the installation efficiency of the steel chisel.

[0030] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel chisel that is easy to install, comprising a chisel rod (1) and a drive shaft (2), characterized in that: The chisel rod (1) and the drive shaft (2) are connected via a quick-insert assembly (3); a key groove (11) is provided in an annular shape at the end of the chisel rod (1) corresponding to the drive shaft (2); a guide groove (12) is provided between adjacent key grooves (11); a guide block (22) is provided in an annular shape at the end of the drive shaft (2) corresponding to the chisel rod (1); and the guide block (22) is movably connected to the inside of the guide groove (12); The quick-connect assembly (3) includes a fixed sleeve (31) and a movable sleeve (33), the centers of the fixed sleeve (31) and the movable sleeve (33) are collinear, and the fixed sleeve (31) is fixedly mounted on the drive shaft (2), the inner side of the fixed sleeve (31) is provided with a snap-in groove (32) in an annular shape, the outer side of the movable sleeve (33) is provided with a snap-in block (34) in an annular shape, the snap-in block (34) is movably connected to the inside of the snap-in groove (32), the inside of the movable sleeve (33) is provided with arc-shaped plates (35) symmetrically on the left and right, a guide rod (36) is provided between adjacent arc-shaped plates (35), a return spring (38) is sleeved on the guide rod (36), and a limit key (37) is fixedly mounted on the opposite end of the adjacent guide rods (36), and the limit key (37) is movably connected to the key slot (11).

2. The easy-to-install steel chisel according to claim 1, characterized in that: The depth of the clamping groove (32) is greater than 1 / 2 of the length of the clamping block (34), and the number of the clamping blocks (34) and the clamping grooves (32) are equal.

3. The easy-to-install steel chisel according to claim 1, characterized in that: The drive shaft (2) is provided with a groove for engaging the return spring (38).

4. The easy-to-install steel chisel according to claim 1, characterized in that: The center lines of the guide rod (36) and the chisel rod (1) are perpendicular to each other, and the guide rod (36) is movably plugged into the chisel rod (1).

5. The easy-to-install steel chisel according to claim 1, characterized in that: An inclined arc surface is provided at the end of the adjacent arc plate (35) corresponding to the drive shaft (2), and the arc plate (35) is provided on the outside of the drive shaft (2).

6. The easy-to-install steel chisel according to claim 1, characterized in that: The inner and outer positions of the arc-shaped plate (35) and the limit key (37) correspond to each other, and the limit key (37) is arranged on the inner side of the drive shaft (2).

7. The easy-to-install steel chisel according to claim 1, characterized in that: The movable sleeve (33) is provided with a tapered groove at the end portion corresponding to the chisel rod (1), and the symmetrical arc-shaped plate (35) is clamped on the inner side of the tapered groove.

Images