Air hammer with protective structure

Abstract

The utility model belongs to the technical field of air hammers, and discloses an air hammer with a protection structure, which comprises an anvil block, a circular bead is fixedly mounted on the circumferential side of the anvil block, a guide ring is rotatably mounted on the upper side of the circular bead, a plurality of sliders are slidably mounted on the circumferential side of the guide ring, and protection rods are fixedly mounted on the upper surfaces of the sliders. An elastic connecting structure is arranged between every two adjacent sliding blocks. A regulation and control device is arranged on the side wall of the guide ring and is connected and assembled with the closest sliding blocks on the two sides; and a locking structure is arranged on the side wall of the guide ring. According to the utility model, the guide ring, the sliding block, the protective rod and other structures are arranged on the anvil block, so that the protective rod can be adjusted in a circumferential sliding manner, the use is flexible, and the protective rod can be uniformly distributed and the position is controllable under the matching of the regulation and control device and the elastic connecting structure; and the guide ring can also rotate along the circular bead and is positioned through the locking structure, and all parts on the guide ring can be driven to rotate, so that an operator can conveniently work at a comfortable angle.

Description

Technical Field

[0001] The present application belongs to the technical field of air hammers, and in particular to an air hammer with a protective structure. Background Art

[0002] Air hammer is a kind of free forging machine. The compression cylinder compresses the air and sends it into the working cylinder through the distribution valve, pushing the piston and the hammer head to move up and down to complete the hammering work. It is flexible to operate and is widely used in the production of small and medium-sized forgings.

[0003] The air hammer is mainly composed of a frame, a transmission mechanism, a compression cylinder and a working cylinder, a compression piston, a drop part, a gas distribution mechanism and anvil. The workpiece to be hammered is placed on the anvil through a fixture. During the hammering process, the workpiece is always clamped in the fixture. Because the operator clamps it manually, the workpiece is easy to jump out of the anvil when he is tired at work or clamped improperly, which will pose a threat to the operator's work installation.

[0004] Therefore, an air hammer with a protective structure is proposed. Utility Model Content

[0005] The utility model aims to solve the above-mentioned problems and proposes an air hammer with a protective structure, which can provide adjustable semi-enclosed protection around the anvil to prevent the workpiece from jumping out.

[0006] On the one hand, there is provided an air hammer with a protective structure, comprising an anvil, a shoulder fixedly mounted on the circumferential side of the anvil, a guide ring rotatably mounted on the upper side of the shoulder, a plurality of sliders slidably mounted on the circumferential side of the guide ring, protective rods fixedly mounted on the upper surfaces of the sliders, and an elastic connection structure arranged between adjacent sliders; a regulating device is arranged on the side wall of the guide ring, and the regulating device is respectively connected and assembled with the sliders closest to both sides; and a locking structure is arranged on the side wall of the guide ring.

[0007] Specifically, the elastic connection structure includes a hanging ring and a tension spring. The lower surface of the sliding block is fixedly mounted with a hanging ring, and tension springs are hung between adjacent hanging rings.

[0008] Specifically, the control device includes a worm reducer, a winding roller and a steel cable. The side wall of the guide ring is fixedly mounted with a worm reducer, the output end of the worm reducer is fixedly mounted with a winding roller, one end of two steel cables is fixedly mounted on the winding roller, and the other ends of the two steel cables are respectively fixedly assembled with the hanging rings closest to the two sides of the winding roller.

[0009] Furthermore, rollers are rotatably mounted on the lower side of the shoulder, and the rollers are evenly distributed around the circumference.

[0010] Furthermore, the winding roller is provided with two winding grooves, and the two steel cables are respectively located in the two winding grooves.

[0011] Specifically, the locking structure includes an internal thread sleeve and a screw handle. The side wall of the guide ring is fixedly mounted with the internal thread sleeve, and the screw handle is threadedly connected to the internal thread sleeve. When the screw handle is locked, it abuts against the shoulder.

[0012] Furthermore, vertical anti-slip grooves are engraved on the circumferential side of the shoulder.

[0013] Specifically, guide grooves are provided on both upper and lower sides of the guide ring, the cross section of the slider is U-shaped, and universal balls are fixedly installed at both ends of the slider, and the universal balls are respectively located in the guide grooves.

[0014] Specifically, the upper portion of the protection rod is inclined toward a side away from the anvil.

[0015] On the other hand, another air hammer with a protective structure is provided, which also includes a chain net, and the chain net is fixedly installed between adjacent protective rods.

[0016] Beneficial effects:

[0017] Through the structures such as the guide ring, the slider and the protection rod arranged on the anvil, the protection rod can be adjusted by circular sliding, and is flexible to use. With the cooperation of the regulating device and the elastic connection structure, the protection rod can be evenly distributed and the position can be controlled.

[0018] The guide ring can also rotate along the shoulder and be positioned through a locking structure, which can drive all the components on it to rotate, so that the operator can work at a comfortable angle;

[0019] The chain nets set between the protection bars can further fill the gaps and enhance the protection capability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a schematic front view of the structure of the first embodiment of the utility model;

[0022] Figure 2 It is a schematic three-dimensional diagram of the structure of the anvil at an angle 1 of the first embodiment of the utility model;

[0023] Figure 3It is a schematic three-dimensional diagram of the structure of the anvil at angle 2 of the first embodiment of the utility model;

[0024] Figure 4 It is a partial cross-sectional view showing the structure of the universal ball of the utility model;

[0025] Figure 5 This is a schematic front view of the structure of the anvil of the second embodiment of the utility model.

[0026] In the figure: 1. anvil, 2. roller, 3. screw handle, 4. winding roller, 5. worm reducer, 7. guide ring, 8. protection rod, 9. slider, 10. tension spring, 11. steel cable, 12. internal thread sleeve, 13. shoulder, 14. chain net. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below in conjunction with the embodiments shown in the accompanying drawings. However, the embodiments do not limit the protection scope of the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on the embodiments are all within the protection scope of the present invention.

[0028] Embodiment 1:

[0029] This embodiment provides an air hammer with a protective structure. Figure 1-Figure 4 As shown, it includes an anvil 1, which is a cylinder. The air hammer is installed on a solid reinforced concrete foundation. The anvil 1 is placed in the base of the air hammer through wooden blocks. The anvil 1 withstands the hammering and cushions the impact through the wooden blocks. The air hammer is an existing equipment, and the structure and working principle are not described in detail here.

[0030] A shoulder 13 is fixedly installed on the circumferential side of the anvil 1 by welding or integral molding. The outer circumference of the shoulder 13 is circular. A guide ring 7 is rotatably installed on the upper side of the shoulder 13 through a bearing. A number of sliders 9 are slidably installed on the circumferential side of the guide ring 7. Protective rods 8 are fixedly installed on the upper surfaces of the sliders 9. The sliders 9 can drive the protective rods 8 to slide along the circumference of the circumferential side of the guide ring 7, and the guide ring 7 can drive all components thereon to rotate on the shoulder 13; an elastic connection structure is arranged between adjacent sliders 9, and the elastic connection structure can make adjacent sliders 9 have a force to move closer to each other, thereby driving the protective rods 8 to move closer to each other. When there is no external force, all sliders 9 drive the protective rods 8 to reset to one place.

[0031] The side wall of the guide ring 7 is provided with a regulating device, which is respectively connected and assembled with the sliders 9 closest to both sides. The regulating device can simultaneously apply tension to the sliders 9 closest to both sides, and after cooperating with the elastic connection structure, the sliders 9 with the protective rods 8 can be evenly distributed.

[0032] The side wall of the guide ring 7 is provided with a locking structure. When the locking structure is not locked, the guide ring 7 can rotate freely. When the locking structure is locked, the position of the guide ring 7 relative to the shoulder 13 can be locked, and the guide ring 7 cannot rotate freely.

[0033] Specifically, Figure 3 As shown, the elastic connection structure includes a hanging ring and a tension spring 10. The lower surface of the slider 9 is fixedly installed with a hanging ring, and the tension spring 10 is hung between adjacent hanging rings. The tension springs 10 are of the same model and can exert a force on the adjacent sliders 9 to move them closer to each other through the hanging ring.

[0034] Specifically, Figure 3 As shown, the regulating device includes a worm reducer 5, a winding roller 4 and a steel cable 11. The worm reducer 5 is an existing component with a shell, a worm gear and other structures, and has the ability of reverse braking. A handwheel is fixedly installed on the input end of the worm reducer 5 to facilitate the twisting operation; the worm reducer 5 is fixedly installed on the side wall of the guide ring 7, and the winding roller 4 is fixedly installed on the output end of the worm reducer 5. The winding roller 4 is fixedly installed with one end of two steel cables 11, and the other ends of the two steel cables 11 are respectively fixedly assembled with the hanging rings closest to the two sides of the winding roller 4; by turning the handwheel, the winding roller 4 can be rotated through the worm reducer 5, and the two steel cables 11 can be synchronously wound or released. After transmission by the hanging ring, the sliders 9 closest to the two sides of the winding roller 4 can be driven to be synchronously adjusted to move closer or farther.

[0035] Furthermore, rollers 2 are rotatably installed on the lower side of the shoulder 13, and the rollers 2 are evenly distributed on the circumference; the steel cable 11 and the tension spring 10 can be protected by the rollers 2 to prevent the steel cable 11 and the tension spring 10 from rubbing against the circumferential side surface of the anvil 1 and causing loss or even breakage. When the steel cable 11 and the tension spring 10 are close to the anvil 1, they will contact with the rollers 2 and avoid mutual friction by rolling.

[0036] Furthermore, the winding roller 4 is provided with two winding grooves, and the two steel cables 11 are respectively located in the two winding grooves; this can prevent the two steel cables 11 from contacting each other and causing wear during winding, or even entanglement and jamming, thereby ensuring smooth winding and unfolding of the steel cables 11.

[0037] Specifically, Figure 3 As shown, the locking structure includes an internal threaded sleeve 12 and a screw handle 3. The side wall of the guide ring 7 is fixedly installed with the internal threaded sleeve 12 by welding or integral molding, and the internal threaded sleeve 12 is screwed with the screw handle 3; the screw handle 3 mainly includes a handle and a screw fixed together. The screw handle 3 can be rotated to adjust the screw connection depth of the screw inside the internal threaded sleeve 12. Screwing in is a locked state, and screwing out is a released state. When the screw handle 3 is locked, it abuts against the shoulder 13, thereby fixing the position of the guide ring 7 relative to the shoulder 13.

[0038] Furthermore, vertical anti-skid grooves are engraved on the circumferential side of the shoulder 13, which can increase the friction force when the screw rod contacts the shoulder 13 and improve the locking strength.

[0039] Specifically, Figure 4 As shown, guide grooves 6 are provided on the upper and lower sides of the guide ring 7, the cross-section of the slider 9 is U-shaped, and universal balls are fixedly installed at both ends of the slider 9, and the universal balls are respectively located in the guide grooves 6; the setting of the universal balls can improve the stability of the circular movement of the slider 9, and prevent the slider 9 from separating from the guide ring 7. In order to further improve the smoothness of the movement, lubricating oil should be regularly applied to the guide groove 6 to reduce the rolling resistance of the ball of the universal ball in the guide groove 6.

[0040] Specifically, the upper portion of the protection rod 8 is inclined toward a side away from the anvil 1, leaving sufficient operating space for the hammering of the air hammer to avoid affecting the flipping operation of the workpiece.

[0041] The working method of this embodiment is as follows:

[0042] When in use, the hand wheel is turned to rotate the winding roller 4 through the worm reducer 5, and the two steel cables 11 are wound up synchronously. After the hanging ring transmission, the sliders 9 closest to the two sides of the winding roller 4 can be driven to move synchronously along the guide groove 6. After the force is transmitted by the elastic connection structure, the other sliders 9 can be pulled and kept evenly distributed. The semi-enclosed structure formed by the protective rod 8 plays a protective role, and there is no protective rod 8 above the worm reducer 5. The reserved opening is used for the clamp to carry the workpiece in and out; at the same time, the guide ring 7 can drive all the components thereon to rotate along the shoulder 13, and lock it through the locking structure, adjust the direction of the opening, and facilitate the operator to operate in a comfortable direction; the workpiece that accidentally pops out when the air hammer is hammering can be intercepted by the protective rod 8 to protect the safety of the operator.

[0043] When not in use, the hand wheel can be rotated in the reverse direction to release the two steel cables 11 synchronously, and all the guide rings 7 are gathered and reset along the guide groove 6 to the side opposite to the worm reducer 5 through the action of the elastic connection structure.

[0044] Embodiment 2:

[0045] This embodiment provides another air hammer with a protective structure, including all the technical features of the above-mentioned embodiment 1, and further adding technical features such as Figure 5 As shown, a chain net 14 is fixedly installed between adjacent protection rods 8; the chain net 14 is an existing component formed by adjacent ring buckles buckled together to form a net, and has the properties of high temperature resistance, high strength and ductility.

[0046] The chain net 14 can fill the gaps between adjacent protection bars 8, and workpieces that accidentally pop out when the air hammer strikes can be intercepted by the protection bars 8 and the chain net 14, further improving the protection effect.

[0047] It is obvious 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 features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0048] In addition, it should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that those skilled in the art can understand.

Claims

1. An air hammer with a protective structure, comprising an anvil (1), characterized in that: A shoulder (13) is fixedly mounted on the circumferential side of the anvil (1), a guide ring (7) is rotatably mounted on the upper side of the shoulder (13), a plurality of sliders (9) are slidably mounted on the circumferential side of the guide ring (7), a protective rod (8) is fixedly mounted on the upper surface of each slider (9), and an elastic connection structure is provided between adjacent sliders (9); The side wall of the guide ring (7) is provided with a regulating device, and the regulating device is respectively connected and assembled with the sliders (9) closest to the two sides; The side wall of the guide ring (7) is provided with a locking structure.

2. The air hammer with a protective structure according to claim 1, characterized in that: The elastic connection structure comprises a hanging ring and a tension spring (10); the lower surface of the slider (9) is fixedly mounted with a hanging ring, and tension springs (10) are hung between adjacent hanging rings.

3. The air hammer with a protective structure according to claim 2, characterized in that: The regulating device comprises a worm reducer (5), a winding roller (4) and a steel cable (11); the side wall of the guide ring (7) is fixedly mounted with the worm reducer (5); the output end of the worm reducer (5) is fixedly mounted with the winding roller (4); one end of two steel cables (11) is fixedly mounted on the winding roller (4); the other ends of the two steel cables (11) are respectively fixedly assembled with the hanging rings closest to the two sides of the winding roller (4).

4. The air hammer with a protective structure according to claim 3, characterized in that: Rollers (2) are rotatably mounted on the lower side of the shoulder (13), and the rollers (2) are evenly distributed around the circumference.

5. The air hammer with a protective structure according to claim 3, characterized in that: The winding roller (4) is provided with two winding grooves, and the two steel cables (11) are respectively located in the two winding grooves.

6. The air hammer with a protective structure according to claim 1, characterized in that: The locking structure comprises an internal thread sleeve (12) and a screw handle (3); the side wall of the guide ring (7) is fixedly mounted with the internal thread sleeve (12); the screw handle (3) is threadedly connected to the internal thread sleeve (12); and the screw handle (3) abuts against the shoulder (13) when locked.

7. The air hammer with a protective structure according to claim 6, characterized in that: The circumferential side of the shoulder (13) is engraved with vertical anti-slip grooves.

8. The air hammer with a protective structure according to claim 1, characterized in that: The guide ring (7) is provided with guide grooves (6) on both upper and lower sides. The cross section of the slider (9) is U-shaped. Universal balls are fixedly mounted on both ends of the slider (9). The universal balls are respectively located in the guide grooves (6).

9. The air hammer with a protective structure according to claim 1, characterized in that: The upper portion of the protection rod (8) is inclined toward a side away from the anvil (1).

10. The air hammer with a protective structure according to claim 1, characterized in that: A chain net (14) is fixedly installed between adjacent protection bars (8).

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