CN216525261U

CN216525261U - 5J spring impact hammer

Info

Publication number: CN216525261U
Application number: CN202123158921.5U
Authority: CN
Inventors: 李庆权
Original assignee: Guangzhou Zhilitong Electromechanical Co ltd
Current assignee: Guangzhou Zhilitong Electromechanical Co ltd
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-05-13
Anticipated expiration: 2031-12-15

Abstract

The utility model relates to a 5J spring impact hammer, which is characterized by comprising a positioning frame, a power storage impact mechanism, a trigger cylinder, a positioning release mechanism and a release pull rod, wherein the power storage impact mechanism and the positioning release mechanism are arranged on the positioning frame, the trigger cylinder is slidably sleeved on the positioning frame, two ends of the release pull rod are respectively connected with the trigger cylinder and the positioning release mechanism, a plurality of jacking springs are arranged between the rear end of the trigger cylinder and the positioning frame, a plurality of limiting guide hooks are also arranged on the trigger cylinder, and each limiting guide hook is also slidably hung on the positioning frame. The trigger cylinder can be triggered accurately, a reliable limiting and guiding structure is adopted for the trigger cylinder, the trigger cylinder has the advantages of good installation and positioning stability, high action accuracy, high structural strength and the like, and the conditions of abnormal displacement, deformation, damage and the like can be effectively avoided, so that the aging and damage speed of the spring impact hammer can be effectively delayed, and the service life of the spring impact hammer can be further prolonged.

Description

5J spring impact hammer

Technical Field

The utility model relates to the field of inspection tools, in particular to a 5J spring impact hammer.

Background

At present, the spring impact hammer is mainly used for detecting the mechanical strength of household appliances and appliances with similar purposes (such as shells, operating levers, handles, knobs, indicator lights, signal lights, lamp shades, glass and the like of electronic products, lamps and lanterns and electrical accessories) so as to test whether tested products can bear reckless operation and other accidents which may occur or not, and therefore electric products which leave factories can safely and reliably run normally. In order to test the large impact capacity, the impact element is held by hands to vertically impact or impact by a swing rod at the height required by the standard, so that the test is very inconvenient for the part of the tested sample which is difficult to test by the impact element or the large-scale fixed sample.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems and the defects, and provides a 5J spring impact hammer, which adopts a trigger cylinder to realize the trigger impact action, the trigger cylinder can be triggered very accurately, a very reliable limiting and guiding structure is adopted for the trigger cylinder, the trigger cylinder has the advantages of good installation and positioning stability, high action accuracy, high structural strength and the like, and the conditions of abnormal displacement, deformation, damage and the like can be effectively avoided, so that the aging and damage speed of the spring impact hammer can be effectively delayed, and the service life of the spring impact hammer is further prolonged.

The technical scheme of the utility model is realized as follows:

A5J spring impact hammer is characterized by comprising a positioning frame, a force storage impact mechanism, a trigger cylinder, a positioning release mechanism and a release pull rod, wherein the force storage impact mechanism is arranged on the positioning frame, a punch head of the force storage impact mechanism is positioned at the front end of the positioning frame, the positioning release mechanism is arranged at the rear end of the positioning frame and can be clamped on the force storage impact mechanism in a force storage state, the trigger cylinder is slidably sleeved on the front end of the positioning frame and is arranged around the punch head of the force storage impact mechanism, two ends of the release pull rod are respectively connected with the trigger cylinder and the positioning release mechanism, a plurality of jacking springs are arranged between the rear end of the trigger cylinder and the positioning frame, the jacking springs are arranged around an inner hole of the trigger cylinder, a plurality of limiting guide hooks are further arranged at the rear end of the trigger cylinder, and the limiting guide hooks are arranged around the inner hole of the trigger cylinder, and all the limiting guide hooks are also hung on the positioning frame in a sliding way.

Preferably, the positioning frame is provided with a free impact buffer spring, and the free impact buffer spring can be impacted after the power storage impact mechanism finishes impact action.

Preferably, the front end and the rear end of the positioning frame are respectively provided with a front mounting cavity and a rear mounting cavity, the front end of the positioning frame is provided with a guide hole, the rear end of the guide hole penetrates into the front mounting cavity, the force storage impact mechanism comprises an impact head, a force storage pull rod and a force storage spring, the impact head is slidably embedded in the guide hole, one end of the force storage pull rod sequentially penetrates through the rear mounting cavity and the front mounting cavity from the rear end of the positioning frame and then is arranged in the guide hole, the force storage pull rod is connected with the impact head, a front limiting block is arranged on the force storage pull rod in the front mounting cavity, the force storage spring is sleeved on the force storage pull rod in the front mounting cavity, the front end and the rear end of the force storage spring respectively elastically press against the rear cavity walls of the front limiting block and the front mounting cavity, a rear limiting block is arranged on the force storage pull rod in the rear mounting cavity, the idle driving buffer spring is sleeved on the force storage pull rod in the rear mounting cavity, and the front end of the idle driving buffer spring is fixed on the front cavity wall of the rear mounting cavity, and the positioning and releasing mechanism is arranged in the rear end of the rear mounting cavity and can be clamped on the rear limiting block.

Preferably, the front end of the power storage pull rod is provided with an external thread, and the front limit block is screwed on the external thread.

Preferably, the impact head is screwed on the external thread.

Preferably, the positioning frame comprises a guide cylinder, a middle seat, a rear seat, a sleeving cylinder and two fixed laths, the guide cylinder, the middle seat and the rear seat are arranged side by side from front to back, an inner hole of the guide cylinder forms a guide hole, the middle parts of the two fixed laths are respectively fixed on two side walls of the middle seat, the front ends and the rear ends of the two fixed laths are respectively connected with the guide cylinder and the rear seat, a front installation cavity is formed between the guide cylinder and the middle seat, a rear installation cavity is formed between the middle seat and the rear seat, a blank driving buffer spring is fixed on the rear wall of the middle seat, the power storage pull rod is simultaneously and slidably penetrated on the middle seat and the rear seat, the trigger cylinder is slidably sleeved on the front end of the guide cylinder, a limiting convex ring is arranged on the circumferential surface of the rear end of the guide cylinder, each jacking spring is arranged between the trigger cylinder and the limiting convex ring, each limiting guide hook is slidably hung on the limiting convex ring, the front end of the release pull rod penetrates through the limiting convex ring and then is connected with the rear end of the trigger cylinder, and the sleeving cylinder is sleeved on the limiting convex ring, the middle seat and the rear seat at the same time.

Preferably, a handle is arranged at the rear end of the power storage pull rod.

Preferably, the impact head comprises a cylindrical part and a ball head part, one end of the cylindrical part is connected with the force accumulation pull rod, the ball head part is of a segment-shaped structure, the plane of the ball head part is connected with the end face of the other end of the cylindrical part, and the cylindrical part is embedded in the guide hole in a sliding mode.

Preferably, the positioning and releasing mechanism comprises a swing fixture block and a limiting block, the swing fixture block is hinged to the positioning frame, the swing fixture block can be clamped on the force storage impact mechanism in a force storage state, the limiting block is hinged to the positioning frame, one end of the limiting block is pressed against one end of the swing fixture block, and the rear end of the release pull rod is hinged to the other end of the limiting block.

The utility model has the beneficial effects that: in the utility model, a trigger cylinder and a release pull rod are adopted to trigger the positioning and releasing mechanism. The trigger cylinder is sleeved on the front end of the positioning frame in a sliding mode, and the trigger cylinder is arranged around the punch head of the force storage impact mechanism. Therefore, when the punch part of the power storage impact mechanism is aligned to a workpiece to be tested, the trigger cylinder is contacted with the workpiece to be tested, so that the trigger cylinder can be triggered, the accuracy and stability of the trigger action can be greatly improved, and the convenience of testing is improved. And this can accurately, stably trigger location release mechanism to guarantee that the impact mechanism of holding power can be released accurately, and then help improving the accuracy and the stability that spring impact hammer carries out the impact test, this spring impact hammer's reliability and suitability are very high.

On the basis that the trigger cylinder adopts the sliding sleeve, a plurality of jacking springs and a plurality of limiting guide hooks are further arranged for limiting and guiding the trigger cylinder, so that the trigger cylinder can be limited and guided reliably, the stability and reliability of the installation and positioning of the trigger cylinder can be effectively improved, the accuracy of the action of the trigger cylinder can be guaranteed, and the structural strength of the installation and positioning of the trigger cylinder can be improved. When the spring impact hammer adopts large impact force, the conditions of abnormal displacement, deformation, damage and the like of the trigger cylinder are avoided, so that the aging and damage speed of the spring impact hammer can be effectively delayed, and the service life of the spring impact hammer is further prolonged.

Meanwhile, the spring impact hammer is compact and small in overall structure, so that the spring impact hammer can be conveniently carried, the requirement of field detection can be met, the position of a part to be tested can be conveniently detected, the spring impact hammer is very convenient to use, and the accuracy of the test is improved.

By disposing the trigger barrel around the punch portion of the power impact mechanism. And the punch part of the power storage impact mechanism can be shielded and protected to a certain extent. When the spring impact hammer is tested, an operator is prevented from directly contacting the punch part of the power storage impact mechanism, and the purpose of improving the safety of the spring impact hammer can be achieved.

The top pressure spring not only can play a very good limiting role for the trigger cylinder, but also can play a role in rebound buffering. This just can avoid triggering a section of thick bamboo by the spurious triggering to play very reliable cushioning effect to triggering a section of thick bamboo, avoid triggering a section of thick bamboo and locating rack the condition that appears warping, damaging, this also can play extension spring impact hammer life's effect.

Drawings

Fig. 1 is a schematic view of the overall structure of the spring impact hammer of the present invention.

Fig. 2 is a schematic sectional structure view of the spring impact hammer of the present invention.

Fig. 3 is one of the partial structural diagrams of the spring impact hammer of the present invention.

Fig. 4 is a second schematic view of a part of the spring impact hammer of the present invention.

Fig. 5 is a third schematic view of a part of the spring impact hammer of the present invention.

Fig. 6 is a schematic structural diagram of an impact head according to the present invention.

Detailed Description

As shown in fig. 1 to 5, the 5J spring impact hammer of the present invention includes a positioning frame 1, a power storage impact mechanism 2, a triggering cylinder 3, a positioning release mechanism 4, and a release pull rod 5, wherein the power storage impact mechanism 2 is disposed on the positioning frame 1, a punch of the power storage impact mechanism 2 is disposed at a front end of the positioning frame 1, the positioning release mechanism 4 is disposed at a rear end of the positioning frame 1, the positioning release mechanism 4 is capable of being clamped on the power storage impact mechanism 2 in a power storage state, the triggering cylinder 3 is slidably sleeved on the front end of the positioning frame 1, the triggering cylinder 3 is disposed around the punch of the power storage impact mechanism 2, two ends of the release pull rod 5 are respectively connected with the triggering cylinder 3 and the positioning release mechanism 4, a plurality of top pressure springs 31 are disposed between the rear end of the triggering cylinder 3 and the positioning frame 1, and the top pressure springs 31 are disposed around an inner hole of the triggering cylinder 3, the rear end of the trigger cylinder 3 is also provided with a plurality of limiting guide hooks 32, the limiting guide hooks 32 are arranged around the inner hole of the trigger cylinder 3, and the limiting guide hooks 32 are hung on the positioning frame 1 in a sliding manner.

In the present invention, the trigger cylinder 3 and the release rod 5 are used to trigger the positioning and releasing mechanism 4. Because the trigger cylinder 3 is slidably sleeved on the front end of the positioning frame 1, and the trigger cylinder 3 is arranged around the punch part of the power storage impact mechanism 2. When the punch part of the power storage impact mechanism 2 is aligned to a workpiece to be tested, the trigger cylinder 3 is contacted with the workpiece to be tested, so that the trigger cylinder 3 can be triggered, the accuracy and stability of the trigger action can be greatly improved, and the convenience of testing is improved. And this can accurately, stably trigger location release mechanism 4 to guarantee that power storage impact mechanism 2 can be released accurately, and then help improving the accuracy and the stability that spring impact hammer carries out the impact test, this spring impact hammer's reliability and suitability are very high.

On the basis that trigger a section of thick bamboo 3 adopted the slip suit, still set up a plurality of roof pressure spring 31, a plurality of spacing guide hook 32 for play spacing, guide effect to trigger a section of thick bamboo 3, this can play very reliable spacing and guide effect to triggering a section of thick bamboo 3, thereby can improve the stability and the reliability of triggering a section of thick bamboo 3 installation location effectively, this is just can guarantee to trigger the accuracy that the action of a section of thick bamboo 3 is very, and can also play the structural strength who improves trigger a section of thick bamboo 3 installation location like this. Therefore, when the spring impact hammer adopts large impact force, the conditions of abnormal displacement, deformation, damage and the like of the trigger cylinder 3 are avoided, so that the aging and damage speed of the spring impact hammer can be effectively delayed, and the service life of the spring impact hammer is further prolonged.

By arranging the trigger cylinder 3 around the punch part of the power impact mechanism 2. But also can play a certain role of shielding and protecting the punch part of the power storage impact mechanism 2. This can avoid operating personnel direct contact to hold the drift of power impact mechanism 2 when testing, and this can play the purpose that improves spring impact hammer security.

The top pressure spring 31 not only can play a very good limiting role for the trigger cylinder 3, but also can play a role in rebound buffering. This just can avoid triggering a section of thick bamboo 3 by the spurious triggering to play very reliable cushioning effect to triggering a section of thick bamboo 3, avoid triggering a section of thick bamboo 3 and locating rack 1 the condition that appears warping, damaging, this also can play extension spring impact hammer life's effect.

The top pressure spring 31 has a small elastic force and only plays a role in limiting the trigger cylinder 3, so that the trigger cylinder 3 keeps the pulling action on the release rod 5 to prevent the positioning and releasing mechanism 4 from being triggered by mistake. And thus the trigger cylinder 3 can be triggered without much force, and the spring impact hammer is still very convenient to use.

As shown in fig. 2 to 4, the positioning frame 1 is provided with a idle striking damper spring 6, and the idle striking damper spring 6 can be struck by the power storage striking mechanism 2 after the striking operation is completed. Through the setting of the idle impact buffer spring 6, the idle impact force storage impact mechanism 2 can be well buffered, the impact force storage impact mechanism 2 is prevented from violently striking the positioning frame 1, the damage of the idle impact force storage impact mechanism 2 and the positioning frame 1 can be avoided, and the service life of the spring impact hammer can be further prolonged. Because the power storage impact mechanism 2 impacts the idle striking buffer spring 6 after the impact action is finished, the idle striking buffer spring 6 cannot influence the normal use of the power storage impact mechanism 2, and the spring impact hammer can well meet the impact test.

As shown in fig. 2 to 5, a front mounting cavity 10 and a rear mounting cavity 20 are respectively formed at the front end and the rear end of the positioning frame 1, a guide hole 11 is formed at the front end of the positioning frame 1, the rear end of the guide hole 11 penetrates into the front mounting cavity 10, the power storage impact mechanism 2 includes an impact head 21, a power storage pull rod 22 and a power storage spring 23, the impact head 21 is slidably embedded in the guide hole 11, one end of the power storage pull rod 22 sequentially passes through the rear mounting cavity 20 and the front mounting cavity 10 from the rear end of the positioning frame 1 and then is placed in the guide hole 11, the power storage pull rod 22 is connected with the impact head 21, a front limiting block 221 is arranged on the power storage pull rod 22 in the front mounting cavity 10, the power storage spring 23 is sleeved on the power storage pull rod 22 in the front mounting cavity 10, and the front end and the rear end of the power storage spring 23 respectively elastically press against the front limiting block 221 and the rear mounting cavity wall of the front mounting cavity 10, a rear limit block 222 is arranged on the power storage pull rod 22 in the rear mounting cavity 20, the idle striking buffer spring 6 is sleeved on the power storage pull rod 22 in the rear mounting cavity 20, the front end of the idle striking buffer spring 6 is fixed on the front cavity wall of the rear mounting cavity 20, and the positioning and releasing mechanism 4 is arranged in the rear end of the rear mounting cavity 20, and the positioning and releasing mechanism 4 can be clamped on the rear limit block 222. The structure is very simple and reliable, the positioning frame 1 can be conveniently manufactured, and the power storage impact mechanism 2 can be reliably limited, so that the stability and the reliability of the installation and the positioning of the power storage impact mechanism 2 are further improved, and the reliability and the applicability of the spring impact hammer are further improved.

As shown in fig. 2, impact head 21 forms the impact head of power storage impact mechanism 2. This enables a good impact action.

As shown in fig. 2, an external thread 223 is formed on the front end of the power accumulating lever 22, and the front stopper 221 is screwed to the external thread 223. The spring impact hammer has the advantages that the function of adjusting the pressure can be achieved, different testing requirements can be met conveniently, and the application range of the spring impact hammer is further widened.

As shown in fig. 2, the impact head 21 is screwed on the external thread 223. This can serve to adjust the position of the striking head 21 to meet more demanding requirements, which contributes to further increasing the range of applicability of the spring striking hammer.

As shown in fig. 1 to 5, the positioning frame 1 includes a guide cylinder 12, a middle seat 13, a rear seat 14, a sleeving cylinder 15, and two fixing slats 16, the guide cylinder 12, the middle seat 13, and the rear seat 14 are arranged side by side from front to rear, an inner hole of the guide cylinder 12 forms a guide hole 11, the middle portions of the two fixing slats 16 are respectively fixed on two side walls of the middle seat 13, and front and rear ends of the two fixing slats 16 are respectively connected with the guide cylinder 12 and the rear seat 14, the front mounting cavity 10 is formed between the guide cylinder 12 and the middle seat 13, the rear mounting cavity 20 is formed between the middle seat 13 and the rear seat 14, the idle striking buffer spring 6 is fixed on a rear wall of the middle seat 13, the power accumulating pull rod 22 is simultaneously slidably inserted on the middle seat 13 and the rear seat 14, the trigger cylinder 3 is slidably sleeved on a front end of the guide cylinder 12, a limiting convex ring 121 is disposed on a circumferential surface of a rear end of the guide cylinder 12, each top pressure spring 31 is arranged between the trigger cylinder 3 and the limit convex ring 121, each limit guide hook 32 is hung on the limit convex ring 121 in a sliding manner, the front end of the release pull rod 5 passes through the limit convex ring 121 and then is connected with the rear end of the trigger cylinder 3, and the sleeving cylinder 15 is sleeved on the limit convex ring 121, the middle seat 13 and the rear seat 14 at the same time. The positioning frame 1 is simple and reliable in structure, convenient to manufacture, and capable of achieving a reliable limiting effect on the trigger cylinder 3 and the power storage impact mechanism 2, and therefore the reliability and the applicability of the spring impact hammer are further improved. And can play a role of shielding protection through the sleeve barrel 15, which helps to further improve the safety of the spring impact hammer.

As shown in fig. 2, linear bearings 30 are fitted to both the center seat 13 and the rear seat 14, and the power storage rod 22 is slidably fitted to both the linear bearings 30. This not only can play a very good limiting role to the power storage pull rod 22, but also can play a very reliable guiding and friction reducing role to the power storage pull rod 22, thereby being helpful to further improve the accuracy and stability of the action of the power storage impact mechanism 2.

The sleeving cylinder 15 is a stainless steel seamless tube. This ensures that the sleeve 15 has high structural strength and durability.

As shown in fig. 1-5, a handle 224 is provided on the rear end of the power take-up lever 22. This facilitates pulling of the power storage rod 22 to facilitate quick power storage of the power storage striking mechanism 2, which contributes to improvement in convenience of use of the spring striking hammer.

As shown in fig. 2 and 6, the impact head 21 includes a cylindrical portion 211 and a ball portion 212, one end of the cylindrical portion 211 is connected to the power accumulating rod 22, the ball portion 212 has a segment-shaped structure, a plane of the ball portion 212 is connected to an end surface of the other end of the cylindrical portion 211, and the cylindrical portion 211 is slidably fitted in the guide hole 11. Therefore, the impact head 21 can be conveniently and accurately and stably installed, and the impact head 21 can have high impact resistance, so that the reliability of the spring impact hammer is further improved.

By adopting the structure, the spring impact hammer can have impact energy of 5J (joule) conveniently, and deformation can not be generated. And when the spring impact hammer carries out 5J impact energy, the precision is more stable, and the operation is convenient. The impact head 21 can constitute a 5J impact element and the spring hammer can constitute a 5J spring hammer.

Especially for the impact test of more than 2J, the hammer is not provided with a handheld impactor before, and the applicant develops the 5J spring impact hammer, and compared with the original spring impact hammer of less than 2J, the hammer has the advantages of being better in structural improvement, capable of adapting to large impact energy and stable in energy output.

As shown in fig. 2, the positioning and releasing mechanism 4 includes a swing fixture block 41 and a limit block 42, the swing fixture block 41 is hinged to the positioning frame 1, and the swing fixture block 41 can be clamped on the force accumulation impact mechanism 2 in the force accumulation state, the limit block 42 is hinged to the positioning frame 1, and one end of the limit block 42 is pressed against one end of the swing fixture block 41, and the rear end of the release pull rod 5 is hinged to the other end of the limit block 42. The positioning and releasing mechanism 4 is simple and reliable in structure, can be well triggered, and can also play a good limiting role in the power storage impact mechanism 2, so that the reliability of the spring impact hammer is further improved.

In an actual manufacturing process, the specific shape and the installation structure of the swing latch 41 and the stopper 42 may be the shape and the installation structure shown in fig. 2. And the side of the swing fixture block 41 and the side of the limit block 42 are respectively provided with a limit column 43. The purpose of limiting the swing amount of the swing fixture block 41 and the limiting block 42 is achieved, so as to prevent the swing fixture block 41 and the limiting block 42 from swinging excessively, and ensure that the swing fixture block 41 and the limiting block 42 can complete related actions more accurately. Thereby well meeting the requirements of practical use.

As shown in fig. 2 to 5, the swing latch 41 and the stopper 42 are clamped and limited by upper and lower end limiting plates 44, and front and rear ends of the two limiting plates 44 are respectively connected to the middle seat 13 and the rear seat 14. This contributes to further improving the stability and reliability of the installation positioning of the positioning and releasing mechanism 4.

The test process of the spring impact hammer is as follows: the sleeving barrel 15 is held by a hand, then the power storage pull rod 22 is pulled by another hand, the swinging fixture block 41 is fastened to the rear limiting block 222, the power storage spring 23 is in a compressed state at the moment and is to be triggered, the impact head 21 faces to an impact point of a tested sample, the spring impact hammer is pushed forwards, the triggering barrel 3 drives the positioning and releasing mechanism 4 to act, the swinging fixture block 41 is separated from the rear limiting block 222, the impact head 21 is pushed forwards by the power storage spring 23 and then is impacted by the tested sample, and therefore, one impact test is completed, and most of product standards are as follows: the test piece is usually subjected to 3 times of impact tests at the weakest point with the same impact energy, and the test piece is judged to be qualified or not according to the result of the impact.

In the whole test process, for example, the 5J impact element is used for vertical impact or swing rod impact, the tested part which is not projected or uneven on the surface of the tested sample is difficult to impact the required tested point, and the tested point is inconvenient to carry.

The spring impact hammer realizes the handheld test of 5J impact energy, and the two sides of the components are symmetrically arranged, so that the stress is uniform, the deformation of the whole mechanism is reduced, and the whole structure is stable; a stainless steel seamless sleeve 15 is used to accommodate the mounting of the impact head 21(5J impact element). Meanwhile, the idle striking buffer spring 6 is added, so that the phenomenon that the idle striking is performed when a user does not have a sample in the using process is prevented, and the service life of the spring is influenced. Since the impact energy of the idle striking is absorbed by the internal stopper member, the impact energy change and the entire structure damage, which are easily caused to the spring impact hammer over time, are generated.

During the impact process of the impact head 21, the sleeving barrel 15 ensures that the impact process is smooth, and the release of impact energy is not influenced because the resistance is generated due to the weight of the element. Meanwhile, the positioning and releasing mechanism 4 has stable working performance due to the structure of the double limiting plates 44, and the normal release and the trigger force of the impact energy cannot be influenced by deformation.

The above embodiments are preferred embodiments of the present invention, and all similar structures and equivalent changes made by the present invention shall fall within the protection scope of the present invention.

Claims

1. A5J spring impact hammer is characterized in that: comprises a positioning frame (1), a force storage impact mechanism (2), a trigger cylinder (3), a positioning release mechanism (4) and a release pull rod (5), wherein the force storage impact mechanism (2) is arranged on the positioning frame (1), a punch head part of the force storage impact mechanism (2) is positioned at the front end of the positioning frame (1), the positioning release mechanism (4) is arranged at the rear end of the positioning frame (1), the positioning release mechanism (4) can be clamped on the force storage impact mechanism (2) in a force storage state, the trigger cylinder (3) is slidably sleeved on the front end of the positioning frame (1), the trigger cylinder (3) is arranged around the punch head part of the force storage impact mechanism (2), two ends of the release pull rod (5) are respectively connected with the trigger cylinder (3) and the positioning release mechanism (4), a plurality of jacking springs (31) are arranged between the rear end of the trigger cylinder (3) and the positioning frame (1), and each top pressure spring (31) is arranged around the inner hole of the trigger cylinder (3), the rear end of the trigger cylinder (3) is also provided with a plurality of limiting guide hooks (32), each limiting guide hook (32) is arranged around the inner hole of the trigger cylinder (3), and each limiting guide hook (32) is also hung on the positioning frame (1) in a sliding way.

2. The spring impact hammer of claim 1, wherein: the positioning frame (1) is provided with a free impact buffer spring (6), and the free impact buffer spring (6) can be impacted after the power storage impact mechanism (2) finishes impact action.

3. The spring impact hammer of claim 2, wherein: the front end and the rear end of the positioning frame (1) are respectively provided with a front mounting cavity (10) and a rear mounting cavity (20), the front end of the positioning frame (1) is provided with a guide hole (11), the rear end of the guide hole (11) penetrates into the front mounting cavity (10), the power storage impact mechanism (2) comprises an impact head (21), a power storage pull rod (22) and a power storage spring (23), the impact head (21) is embedded in the guide hole (11) in a sliding manner, one end of the power storage pull rod (22) sequentially penetrates through the rear mounting cavity (20) and the front mounting cavity (10) from the rear end of the positioning frame (1) and then is placed in the guide hole (11), the power storage pull rod (22) is connected with the impact head (21), a front limiting block (221) is arranged on the power storage pull rod (22) in the front mounting cavity (10), and the power storage spring (23) is sleeved on the power storage pull rod (22) in the front mounting cavity (10), the front end and the rear end of the force storage spring (23) are respectively and elastically pressed on the front limiting block (221) and the rear cavity wall of the front installation cavity (10), the force storage pull rod (22) in the rear installation cavity (20) is provided with a rear limiting block (222), the idle striking buffer spring (6) is sleeved on the force storage pull rod (22) in the rear installation cavity (20), the front end of the idle striking buffer spring (6) is fixed on the front cavity wall of the rear installation cavity (20), the positioning and releasing mechanism (4) is arranged in the rear end of the rear installation cavity (20), and the positioning and releasing mechanism (4) can be clamped on the rear limiting block (222).

4. The spring impact hammer of claim 3, wherein: the front end of the power storage pull rod (22) is provided with an external thread (223), and the front limit block (221) is screwed on the external thread (223).

5. The spring impact hammer of claim 4, wherein: the impact head (21) is screwed on the external thread (223).

6. The spring impact hammer of claim 3, wherein: the utility model discloses a fixing device for a bicycle, including locating rack (1) including guide cylinder (12), well seat (13), back seat (14), a suit section of thick bamboo (15), two fixed laths (16), guide cylinder (12), well seat (13), back seat (14) are arranged side by side from the past backward, the hole of guide cylinder (12) has constituted guiding hole (11), and the middle part of two fixed laths (16) is fixed respectively on two lateral walls of well seat (13) to make the front and back end of two fixed laths (16) meet with guide cylinder (12), back seat (14) respectively, preceding installation cavity (10) are formed between guide cylinder (12) and well seat (13), back installation cavity (20) are formed between well seat (13) and back seat (14), empty buffer spring (6) of beating are fixed on the back wall of well seat (13), hold power pull rod (22) slide simultaneously and arrange in well seat (13) and wear, On the rear seat (14), the trigger cylinder (3) is slidably sleeved on the front end of the guide cylinder (12), a limiting convex ring (121) is arranged on the circumferential surface of the rear end of the guide cylinder (12), each jacking spring (31) is arranged between the trigger cylinder (3) and the limiting convex ring (121), each limiting guide hook (32) is slidably hung on the limiting convex ring (121), the front end of the release pull rod (5) penetrates through the limiting convex ring (121) and then is connected with the rear end of the trigger cylinder (3), and the sleeving cylinder (15) is simultaneously sleeved on the limiting convex ring (121), the middle seat (13) and the rear seat (14).

7. The spring impact hammer of claim 3, wherein: a handle (224) is arranged at the rear end of the power storage pull rod (22).

8. The spring impact hammer of claim 3, wherein: the impact head (21) comprises a cylindrical part (211) and a ball head part (212), one end of the cylindrical part (211) is connected with the power storage pull rod (22), the ball head part (212) is of a spherical segment structure, the plane of the ball head part (212) is connected with the end face of the other end of the cylindrical part (211), and the cylindrical part (211) is embedded in the guide hole (11) in a sliding mode.

9. The spring impact hammer of claim 1, wherein: the positioning and releasing mechanism (4) comprises a swing clamping block (41) and a limiting block (42), the swing clamping block (41) is hinged to the positioning frame (1), the swing clamping block (41) can be clamped on the force storage impact mechanism (2) in a force storage state, the limiting block (42) is hinged to the positioning frame (1), one end of the limiting block (42) is pressed against one end of the swing clamping block (41), and the rear end of the releasing pull rod (5) is hinged to the other end of the limiting block (42).