阅读说明：本技术 一种轨道交通列车用安全锤 (Safety hammer for rail transit train ) 是由 杨昌休 于 2021-09-17 设计创作，主要内容包括：本发明涉及轨道交通设备技术领域,尤其涉及一种轨道交通列车用安全锤,包括锤头和与所述锤头固定连接的手柄,锤头内设置第一滑道、第二滑道和第三滑道,第一滑道内设置第一滑柱和第一弹簧,第二滑道内设置第二滑柱和第二弹簧,第三滑道内设置推杆第三弹簧,推杆上依次固定连接第三滑柱和第四滑柱,锤头上同轴设置锥头,锥头的尾端伸入第一滑道内,锤头内设置将第一滑道与第三滑道连通的第一横道,还设置将第三滑道与第二滑道连通的第二横道,第一横道内设置第一卡柱,第二横道内设置第二卡柱。本方案的一种轨道交通列车用安全锤具有防止锤头首次打击玻璃后被玻璃反弹离开玻璃,提高了二次打击的有效性确保玻璃的破碎。(The invention relates to the technical field of rail transit equipment, in particular to a safety hammer for a rail transit train, which comprises a hammer head and a handle fixedly connected with the hammer head, wherein a first slide way, a second slide way and a third slide way are arranged in the hammer head, a first sliding column and a first spring are arranged in the first slide way, a second sliding column and a second spring are arranged in the second slide way, a push rod and a third spring are arranged in the third slide way, a third sliding column and a fourth sliding column are sequentially and fixedly connected to the push rod, a conical head is coaxially arranged on the hammer head, the tail end of the conical head extends into the first slide way, a first cross way for communicating the first slide way with the third slide way is arranged in the hammer head, a second cross way for communicating the third slide way with the second slide way is also arranged, a first clamping column is arranged in the first cross way, and a second clamping column is arranged in the second cross way. The safety hammer for the rail transit train has the advantages that the hammer head is prevented from rebounding away from glass after the hammer head strikes the glass for the first time, effectiveness of secondary striking is improved, and breakage of the glass is guaranteed.)

1. The utility model provides a rail transit is safe hammer for train, includes tup and with tup fixed connection's handle, the tup is the cylinder, coaxial setting conical head on the tup, its characterized in that:

a first slide way with a blind end is coaxially arranged in the hammer head and close to one end of the conical head, one end of the conical head is positioned outside the hammer head, the tail end of the conical head penetrates through the hammer head and extends into the first slide way, a baffle ring is arranged on the conical head positioned outside the hammer head, a distance is reserved between the baffle ring and the end surface of the hammer head close to the conical head, an annular groove is coaxially arranged on the end surface of the hammer head and the hammer head, and a tension spring with one end fixedly connected with the baffle ring and the other end fixedly connected with the bottom of the annular groove is sleeved outside the conical head;

a first stop block is arranged at one end, away from the conical head, of the first slide way, the first slide way is connected with a first slide post in a sliding mode, a first annular groove is formed in the cylindrical surface of the first slide post, a first spring is arranged in the first slide way, and two ends of the first spring are respectively in contact with the first stop block and the first slide post;

at least 2 second slide ways with axes parallel to the axes of the hammer head are arranged in the hammer head, one end, close to the conical head, of each second slide way is a blind end, a second sliding column and a second spring are connected in the second slide ways in a sliding mode, a second annular groove is formed in the cylindrical surface of the second sliding column, one end of each second spring is in contact with one end, far away from the conical head, of the second sliding column, the other end of each second spring is connected with the hammer head, a conical suction disc is arranged at one end, close to the conical head, of the hammer head, a connecting rod is arranged in the hammer head, one end of each connecting rod is fixedly connected with the conical tip of the conical suction disc, the other end of each connecting rod penetrates through the hammer head and is connected with the second sliding column, and the connecting rod is connected with the hammer head in a sliding mode;

a third slide way with an opening at one end corresponding to the second slide way is arranged in the hammer head, one end of the third slide way, which is far away from the conical head, is a blind end, a push rod is arranged in the third slide way, one end of the push rod, which is close to the conical head, is contacted with the end surface of the baffle ring, a third slide post and a fourth slide post, which are both in sliding connection with the third slide way, are sequentially and fixedly connected on the push rod along the direction far away from the conical head, and a third spring, of which two ends are respectively contacted with the blind ends of the fourth slide post and the third slide way, is arranged in the third slide way;

a second cross channel for communicating a corresponding second slide way with a third slide way is arranged in the hammer head, a second clamping column with one end clamped into the second annular groove and the other end contacted with the cylindrical surface of the third slide column is arranged in the second cross channel, a fourth spring with one end contacted with the cylindrical surface of the second slide column and the other end fixedly connected with the second clamping column is sleeved outside the second clamping column, one end of the fourth spring is contacted with the cylindrical surface of the second slide column, and the other end of the fourth spring is fixedly connected with the second clamping column;

set up first cross track in the tup will first slide and one of them third slide intercommunication set up first card post in the first cross track, the one end card of first card post is gone into in the first annular, the other end of first card post with the contact of fourth traveller makes first spring is in the pressurized state, and fifth spring is established to first card post overcoat, the one end of fifth spring with first traveller contact, the other end of fifth spring with first card post fixed connection makes the fifth spring be in the pressurized state.

2. The safety hammer for rail transit trains according to claim 1, characterized in that: one end, far away from the conical head, of the second slide penetrates through the hammer head, the second slide is in threaded connection with the second stop block, and one end, far away from the second sliding column, of the second spring is fixedly connected with the second stop block.

3. The safety hammer for rail transit trains as claimed in claim 2, wherein: the position, close to the connecting rod, on the hammer head is provided with a groove which is parallel to the second slide way and is communicated with the external space of the hammer head.

4. The safety hammer for rail transit trains as claimed in claim 3, wherein: and a first exhaust hole penetrating through the conical head, a second exhaust hole penetrating through the first sliding column and a third exhaust hole penetrating through the first stop block are respectively arranged in the direction parallel to the axis of the hammer head.

5. The safety hammer for rail transit trains as claimed in claim 4, wherein: the second slide has 4, and the axis equipartition of 4 second slides is on same circumference.

6. The safety hammer for rail transit trains as claimed in claim 5, wherein: the tail end integrated into one piece of conical head is used for preventing the conical head from breaking away from the third dog of tup.

7. The safety hammer for rail transit trains as claimed in claim 6, wherein: and one end of the connecting rod, which is close to the second sliding column, is provided with an external thread, and the connecting rod is in threaded connection with the second sliding column.

8. The safety hammer for rail transit trains according to claim 7, characterized in that: the end face of the hammer is provided with a taper hole matched with the conical sucker, and the conical sucker is arranged in the taper hole.

9. The safety hammer for rail transit trains as claimed in claim 8, wherein: the end, far away from the conical head, of the first slide is provided with an internal thread, and the first stop block is in threaded connection with the first slide.

Technical Field

The invention relates to the technical field of rail transit equipment, in particular to a safety hammer for a rail transit train.

Background

The safety hammer is used as an escape tool in a carriage of a rail transit vehicle such as a subway, a high-speed rail, a train and the like, and is used for breaking glass on a window and then escaping from the window in case of an emergency, but the striking force of the safety hammer is completely dependent on the own force of a user, and when the user is a person with smaller force such as a woman, an old man, a child or a wounded person, the existing safety hammer cannot have enough force to break the thicker and heavier window glass.

In order to solve the above problems, chinese patent CN 112370673B discloses a safety hammer equipped in a rail transit train, which breaks a pull wire fixed to a pin shaft of a torsion spring when a hammer head impacts glass for the first time, so that the torsion spring drives the pin shaft and a knocking block fixedly connected to the pin shaft to rotate and strike an impacted block, the impacted block impacts the rear end of the hammer head against the elastic force of a second spring, and the impacted hammer head overcomes the elastic force of a first spring to move in a direction close to the glass for secondary impact to break the glass.

It is known that when a human body uses a hammer body to beat an object with force, the object can generate a counterforce to the hammer body to rebound the hammer body away from the surface of the object after the hammer body strikes the surface of the object, particularly, the counterforce phenomenon is obvious when the object to be struck is an object with certain elasticity and rigidity such as toughened glass, so that the hammer head can rebound by the toughened glass to rapidly leave the surface of the toughened glass after striking the toughened glass, in the patent, after the hammer head strikes the glass, a cutting blade cuts off a first connecting wire, after the first connecting wire is broken, a torsional spring rebounds to enable a pin shaft to rotate to drive a striking block to do circular motion to strike an impacted block, the impacted block overcomes the elastic force of a second spring to move forward to strike the hammer head to overcome the elastic force of the first spring to move forward to strike the glass, and when the series of motions are completed, the hammer head which strikes the glass for the first time can rebound away from the glass by the counterforce of the glass for a certain distance, the secondary striking of the hammer head under the elastic force of the torsion spring cannot touch the glass, and secondary crushing cannot be achieved, so that the technical scheme cannot necessarily ensure that effective secondary striking can be performed after primary striking to achieve fragmentation of the window glass in actual use.

Disclosure of Invention

The invention aims to provide a safety hammer for a rail transit train, which effectively solves the problems in the prior art.

In order to achieve the above purpose, the basic scheme of the invention is as follows:

a safety hammer for rail transit trains comprises a hammer head and a handle fixedly connected with the hammer head;

the hammer head is a columnar body, a conical head is coaxially arranged on the hammer head, a first slide way is coaxially arranged in the hammer head, one end, close to the conical head, of the first slide way is a blind end, the other end of the first slide way penetrates through the hammer head, one end, close to the conical head, of the conical head is located outside the hammer head, the tail end of the conical head penetrates through the hammer head and extends into the first slide way, a baffle ring is arranged on the conical head, which is located outside the hammer head, a distance is reserved between the baffle ring and the end face, close to the conical head, of the hammer head, an annular groove is coaxially arranged on the end face, close to the conical head, of the hammer head, and a tension spring is sleeved outside the conical head, one end of the tension spring is fixedly connected with the baffle ring, and the other end of the tension spring is fixedly connected with the bottom of the annular groove;

a first stop block is arranged at one end, far away from the conical head, in the first slide way, a first slide column is connected in the first slide way between the conical head and the first stop block in a sliding manner, a first annular groove is formed in the cylindrical surface of the first slide column, a first spring is arranged between the first stop block and the first slide column, and two ends of the first spring are respectively contacted with the first stop block and the first slide column;

at least 2 second slide ways with axes parallel to the axis of the hammer head are uniformly distributed on the same circumference coaxial with the hammer head in the hammer head, one end, close to the conical head, of each second slide way is a blind end, a second slide column is connected with the corresponding second slide way in a sliding mode, a second annular groove is formed in the cylindrical surface of the second slide column, a second spring is arranged in each second slide way, one end of each second spring is in contact with one end, far away from the conical head, of the corresponding second slide column, the other end of each second spring is fixedly connected with the hammer head, a conical sucker is arranged on one end, close to the conical head, of the corresponding hammer head and coaxial with the corresponding second slide way, a connecting rod is arranged in the hammer head and coaxial with the corresponding conical sucker, one end of the connecting rod is fixedly connected with the conical tip of the corresponding conical sucker, the other end of the connecting rod penetrates through the hammer head and extends into the corresponding second slide way to be connected with the corresponding second slide column, and the connecting rod is connected with the hammer head in a sliding mode;

a third slide way with an opening at one end corresponding to the second slide way is arranged between the first slide way and the second slide way in the hammer head, the axis of the third slide way is parallel to the axis of the first slide way, the end, far away from the conical head, of the third slide way is a blind end, a push rod is arranged in the third slide way, one end, close to the conical head, of the push rod is in contact with the end face of the baffle ring, a third sliding column and a fourth sliding column which are both in sliding connection with the third slide way are sequentially and fixedly connected to the push rod along the direction far away from the conical head, a third spring is arranged in the third slide way, one end of the third spring is in contact with the fourth sliding column, the other end of the third spring is in contact with the blind end of the third slide way, at the moment, the third spring is in a stressed state, and the tension spring is in a tensioned state;

a second cross channel for communicating a corresponding second slide way with a third slide way is arranged in the hammer head along the diameter direction of the hammer head, a second clamping column is arranged in the second cross channel, one end of the second clamping column is clamped into the second annular groove, the other end of the second clamping column is in contact with the cylindrical surface of the third slide column to enable the second spring to be in a compressed state, a fourth spring is sleeved outside the second clamping column, one end of the fourth spring is in contact with the cylindrical surface of the second slide column, and the other end of the fourth spring is fixedly connected with the second clamping column to enable the fourth spring to be in a compressed state;

set up first cross track in the tup will first slide communicates with one of them third slide, sets up first card post in the first cross track, the one end card of first card post is gone into in the first annular, the other end of first card post with the cylinder contact of fourth traveller makes first spring is in the pressurized state, and fifth spring is established to first card post overcoat, the one end of fifth spring with the cylinder contact of first traveller, the other end of fifth spring with first card post fixed connection makes the fifth spring be in the pressurized state.

The principle and the beneficial effect of the basic scheme of the safety hammer for the rail transit train in the scheme are as follows:

when the safety hammer is required to be used for breaking the window glass, the handle is held by a hand to enable the conical head to forcibly knock the glass towards the glass, the conical head drives the blocking ring to move backwards to push the push rod to move backwards when the conical head collides with the glass, and when the blocking ring moves backwards and is in contact with the end face of the hammer head, the kinetic energy of the forward movement of the whole hammer head acts on the glass through the conical head to impact the glass for the first time.

When the push rod moves backwards, the third sliding column and the fourth sliding column which are fixedly connected with the push rod move backwards along with the push rod, when the baffle ring is in contact with the end face of the conical head, the third sliding column moves backwards to be separated from contact with the second clamping column, the fourth sliding column moves backwards to be separated from contact with the first clamping column, the second clamping column moves towards the third slide way direction under the elastic force of the fourth spring to enable the second clamping column to be separated from the second annular groove, and the first clamping column moves towards the third slide way direction under the elastic force of the fifth spring to enable the first clamping column to be separated from the first annular groove.

Under the elasticity of the second spring, the second sliding column drives the conical sucker to move rapidly towards the direction close to the glass through the push rod, the conical sucker moves rapidly to enable the conical sucker to extrude the surface of the glass and then be adsorbed on the upper surface of the glass, and at the moment, the end face of the second sliding column close to the conical sucker is in contact with one end of the second slide way close to the conical sucker to prevent the hammer head from moving towards the direction far away from the glass.

Therefore, under the elastic force of the first spring, the first sliding column rapidly moves towards the direction close to the glass to impact the conical head, so that the conical head rapidly moves towards the direction close to the glass to perform secondary impact on the glass to break the glass.

Compared with the prior art, the basic scheme of the invention at least has the following beneficial effects:

1. this basic scheme makes when the conical head strikes glass for the first time through setting up some interrelated components, and the conical suction cup adsorbs and prevents on the glass surface that the tup moves to keeping away from the glass direction under glass's bounce, has guaranteed the effective secondary impact of conical head to glass under the striking of second traveller, ensures glass's fragmentation.

2. Because the force required for forcing the push rod to move towards the direction far away from the conical head does not need to be too large, people with small force such as children or old people can trigger the conical suction disc to move and trigger the first sliding column to impact the conical head when the safety hammer is used for knocking glass.

3. The first springs with different elastic coefficients can be matched according to the glass performance of the rail transit train, so that the first sliding column has enough kinetic energy under the elastic force of the first springs, and the second striking is performed under the condition that unbroken glass is struck for the first time to ensure that the broken glass is struck.

Furthermore, the one end of second slide keep away from the conical head runs through the tup, second slide internal thread connection second dog, the one end that the second spring kept away from the second traveller with second dog fixed connection.

Further, for reducing the second traveller is in the atmospheric pressure resistance that the spatial variation that produces when the rapid migration led to the fact is close to on the tup connecting rod department with second slide parallel arrangement will the second slide with the fluting of tup exterior space intercommunication, when the second traveller is rapid migration in the second slide, the gas in the second slide passes through fluting and tup exterior space rapid exchange circulation, has reduced the atmospheric pressure resistance when the second traveller removes.

Furthermore, in order to reduce the air pressure resistance of the first sliding column during rapid movement in the first sliding way, a first exhaust hole penetrating through the conical head, a second exhaust hole penetrating through the first sliding column and a third exhaust hole penetrating through the first stop block are respectively arranged in the direction parallel to the axis of the hammer head.

Further, for the adsorption affinity of improving conical suction cup and glass in order effectively to carry out the secondary to glass and strike, the second slide has 4, and the axis equipartition of 4 second slides is on same circumference.

Furthermore, break away from the tup and fly out forward and cause unexpected injury after breaking glass for the restriction that prevents that the conical head from breaking loose the extension spring under the striking of first traveller, the tail end integrated into one piece third dog of conical head.

Furthermore, for convenient dismantlement and equipment, the connecting rod is close to the one end of second traveller sets up the external screw thread, the connecting rod with second traveller threaded connection.

Further, for preventing when not using the safety hammer, the contact of exerted awl type sucking disc and adsorbable object holds adsorbable object and makes the awl type sucking disc can't adsorb on glass when using the safety hammer set up on the terminal surface of tup with awl type sucking disc complex taper hole, the awl type sucking disc set up in the taper hole.

Furthermore, for convenient dismantlement and assembly, first slide is kept away from the one end of conical head sets up the internal thread, first dog and first slide threaded connection, accessible precession or screw out first dog and then adjust the size of first spring to the elasticity of first traveller.

Drawings

FIG. 1 is a front view of an embodiment of the present invention.

Fig. 2 is a schematic view of the internal structure of the hammer head in the front view direction.

Fig. 3 is a top view of an embodiment of the present invention.

Fig. 4 is a left side view of an embodiment of the present invention.

Fig. 5 is a right side view of an embodiment of the present invention.

Fig. 6 is an enlarged view of a portion a in fig. 2.

Fig. 7 is an enlarged view of a portion B in fig. 2.

Fig. 8 is an enlarged view of the portion C in fig. 2.

Fig. 9 is an enlarged view of a portion D in fig. 2.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the pneumatic hammer comprises a hammer head 10, a first slide way 101, a first stop 102, a third vent hole 1021, a first sliding column 103, a first ring groove 1031, a second vent hole 1032, a first spring 1033, a second slide way 104, a second stop 1041, a second spring 1042, a slot 1043, a second sliding column 105, a second ring groove 1051, a third slide way 106, a push rod 1061, a third sliding column 1062, a fourth sliding column 1063, a third spring 1064, a fourth vent hole 1065, a fifth vent hole 1066, a second cross way 107, a second clamping column 1071, a fourth spring 1072, a first cross way 108, a first clamping column 1081, a fifth spring 1082, a handle 20, an arc-shaped groove 21, a conical head 30, a baffle ring 301, a first vent hole 302, a third baffle block 303, an annular groove 304, a tension spring 305, a conical suction cup 40, a connecting rod 401 and a conical hole 402.

The embodiment is a safety hammer for rail transit trains, and is shown in fig. 1, 3 and 4, and comprises a hammer head 10 and a handle 20 fixedly connected with the hammer head 10, wherein the hammer head 10 is a columnar body, the handle 20 is perpendicular to the hammer head 10, and an arc-shaped groove 21 matched with fingers is arranged on the handle 20.

As shown in fig. 1, 2, and 4, a conical head 30 is coaxially arranged with the hammer head 10 on the hammer head 10, a first slide 101 is coaxially arranged with the hammer head 10 in the hammer head 10, one end of the first slide 101 close to the conical head 30 is a blind end, the other end of the first slide 101 penetrates through the hammer head 10, one end of a conical tip of the conical head 30 is located outside the hammer head 10, the tail end of the conical head 30 penetrates through the hammer head 10 and extends into the first slide 101, and a third stop block 303 for preventing the conical head 30 from sliding out of the first slide 101 towards the conical tip direction of the conical head 30 is integrally formed at the tail end of the conical head 30.

As shown in fig. 2, 4, and 6, 4 first exhaust holes 302 penetrating through the conical head 30 are uniformly distributed on the conical head 30 along a direction parallel to the axis of the hammer head 10, an external thread is arranged on the conical head 30 located outside the hammer head 10, a retaining ring 301 is connected to the conical head 30 located outside the hammer head 10 through a thread, a distance is reserved between the retaining ring 301 and the end surface of the hammer head 10 close to the conical head 30, an annular groove 304 is coaxially arranged on the end surface of the hammer head 10 close to the conical head 30 and the hammer head 10, a tension spring 305 is sleeved outside the conical head 30, one end of the tension spring 305 is fixedly connected with the retaining ring 301, and the other end of the tension spring 305 is fixedly connected with the bottom of the annular groove 304.

As shown in fig. 2 and 9, an internal thread is disposed at one end of the first slide channel 101 far from the conical head 30, one end of the first slide channel 101 far from the conical head 30 is connected with the first stopper 102 by a thread, a third air vent 1021 penetrating the first stopper 102 is disposed on the first stopper 102 along a direction parallel to the axis of the hammer head 10, the first slide column 103 is slidably connected in the first slide channel 101 between the conical head 30 and the first stopper 102, a first annular groove 1031 is disposed on the cylindrical surface of the first slide column 103, a second air vent 1032 penetrating the first slide column 103 is disposed on the first slide column 103 along a direction parallel to the axis of the hammer head 10, a first spring 3 is disposed between the first stopper 102 and the first slide column 103, one end of the first spring 1033 contacts with the first stopper 102, and the other end of the first spring 1033 contacts with the first slide column 103.

As shown in the figures 2 and 4, respectively, as shown in fig. 5, 4 second slide ways 104 whose axes are parallel to the axis of the hammer 10 are uniformly distributed on the same circumference coaxial with the hammer 10 in the hammer 10, one end of each second slide way 104 close to the conical head 30 is a blind end, one end of each second slide way 104 far from the conical head 30 penetrates through the hammer 10, one end of each second slide way 104 far from the conical head 30 is in threaded connection with a second stopper 1041, a second sliding column 105 is positioned in the second slide way 104 and is in sliding connection between the second stopper 1041 and the blind end of the second slide way 104, a second circular groove 1051 is arranged on the cylindrical surface of the second sliding column 105, a second spring 1042 is arranged in the second slide way 104, one end of the second spring 1042 is in contact with one end of the second sliding column 105 far from the conical head 30, the other end of the second spring 1042 is fixedly connected with the second stopper 1041, and a slot 1043 corresponding to the second slide way 104 and communicating the second slide way 104 with the external space of the hammer 10 is arranged on the hammer 10.

As shown in fig. 2 and 7, one end of the hammer 10 close to the conical head 30 and the second slideway 104 are coaxially provided with a conical suction cup 40, the conical suction cup 40 is made of elastic rubber, a conical hole 402 matched with the conical suction cup 40 is formed in the end surface of the hammer 10 close to the conical head 30, the conical suction cup 40 is arranged in the conical hole 402, a connecting rod 401 is arranged in the hammer 10 and coaxial with the conical suction cup 40, one end of the connecting rod 401 is fixedly connected with the conical tip of the conical suction cup 40, the other end of the connecting rod 401 penetrates through the hammer 10 and extends into the second slideway 104, the connecting rod 401 is connected with the hammer in a sliding manner, one end of the connecting rod 401 close to the second sliding column 105 is provided with an external thread, the connecting rod 401 is in threaded connection with the second sliding column 105, and the slot 1043 is arranged at a position close to the connecting rod 401 and is parallel to the second slideway 104.

As shown in fig. 2, a third slideway 106 with an opening at one end corresponding to the second slideway 104 is arranged in the hammer 10 between the first slideway 101 and the second slideway 104, the axis of the third slideway 106 is parallel to the axis of the first slideway 101, the end of the third slideway 106 far away from the conical head 30 is a blind end, a push rod 1061 is arranged in the third slideway 106, the axis of the push rod 1061 is coaxial with the axis of the third slideway 106, one end of the push rod 1061 close to the conical head 30 contacts with the end surface of the baffle ring 301, and a third sliding column 1062 and a fourth sliding column 1063 which are both connected with the third slideway 106 in a sliding manner are fixedly connected on the push rod 1061 in sequence along the direction far away from the conical head 30. As shown in fig. 8 and 9, the third spool 1062 is provided with a fourth exhaust hole 1065 extending through the third spool 1062 in a direction parallel to the axis of the push rod 1061, and the fourth spool 1063 is provided with a fifth exhaust hole 1066 extending through the fourth spool 1063 in a direction parallel to the axis of the push rod 1061.

A third spring 1064 is disposed in the third slide 106, one end of the third spring 1064 is in contact with the fourth sliding column 1063, and the other end of the third spring 1064 is in contact with the blind end of the third slide 106, at this time, the third spring 1064 is in a compressed state, and the tension spring 305 is in a tensioned state.

As shown in fig. 2 and 8, a second cross channel 107 is arranged in the hammer head 10 along the diameter direction of the hammer head 10, the second cross channel 107 communicates the corresponding second slide way 104 with the third slide way 106, a second clamping column 1071 is arranged in the second cross channel 107, one end of the second clamping column 1071 is clamped in the second annular groove 1051, the other end of the second clamping column 1071 contacts with the cylindrical surface of the third slide column 1062 to make the second spring 1042 in a pressed state, the second clamping column 1071 is externally sleeved with a fourth spring 1072, one end of the fourth spring 1072 contacts with the cylindrical surface of the second slide column 105, and the other end of the fourth spring 1072 is fixedly connected with the second clamping column 1071 to make the fourth spring 1072 in a pressed state.

As shown in fig. 2 and 9, a first cross channel 108 is disposed in the hammer head 10 to communicate the first slide channel 101 with one of the third slide channels 106, a first lock column 1081 is disposed in the first cross channel 108, one end of the first lock column 1081 is clamped in the first ring groove 1031, the other end of the first lock column 1081 contacts with the cylindrical surface of the fourth slide column 1063 to make the first spring 1033 in a pressed state, the first lock column 1081 is sleeved with a fifth spring 1082, one end of the fifth spring 1082 contacts with the cylindrical surface of the first slide column 103, and the other end of the fifth spring 1082 is fixedly connected with the first lock column 1081 to make the fifth spring 1082 in a pressed state.

The above are merely examples of the present invention, and common general knowledge of known specific structures and characteristics in the schemes is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.