Impingement device

Abstract

The application provides an impact device, comprising: an impulse generator, a baffle is arranged on the impulse generator, and a cavity is formed in the impulse generator; a cylinder body, a first piston is arranged in the cylinder body in sliding mode, the first piston separates the cavity in the cylinder body into a first chamber and a second chamber, a first through hole is arranged on the first piston, and a second through hole is arranged on the side wall of the first chamber; a valve device, comprising a sealing plug, a sliding rod and a first elastic member, the sealing plug is connected with the first end of the sliding rod and located in the second chamber, the sliding rod is arranged in the first through hole and the second through hole and extends in a first direction, the sliding rod is in sealing connection with the second through hole, the second end of the sliding rod is located outside the cylinder body, and the first elastic member is connected between the first piston and the sliding rod; a second piston, arranged in the cavity in sliding mode and connected with the first piston in the first direction, a second elastic member is connected between the second piston and the impulse generator, and the second elastic member is arranged in the first direction. The application can improve the use effect.

Description

Technical Field

[0001] The present invention relates to mechanical equipment technology, in particular to an impact device. Background Art

[0002] With the rapid development of modern science and technology, the research and development of new materials and new products has made great progress, and the detection and testing methods for new materials and new products have also received more and more attention.

[0003] When impact testing is required on an object to be tested, such as a new material or product, an impact testing device is required. Existing impact testing devices include a frame, an impulse generator, and a follower mechanism. The impulse generator and follower mechanism are movably mounted on the frame in a first direction. The impulse generator defines a cavity extending in the first direction, and the first end of the follower mechanism extends within the cavity. When the object to be tested is impact tested, the pressure within the impulse generator cavity rises, and the impulse generator is subjected to a positive force in the first direction, causing it to move forward in the first direction to impact the object to be tested. Simultaneously, the first end of the follower mechanism is subjected to a negative force in the first direction, causing it to move backward in the first direction on the frame.

[0004] Since the first end of the follower mechanism will move in the opposite direction of the first direction when subjected to a force in the opposite direction of the first direction, the positive force in the first direction provided to the impulse generator will be reduced, thereby reducing the impact force of the impulse generator and affecting the use effect of the impact test device. Summary of the Invention

[0005] The invention provides an impact device to improve the use effect.

[0006] The present invention provides an impact device, comprising:

[0007] An impulse generator, wherein a stopper is provided on the impulse generator, a cavity is formed in the impulse generator, and the cavity extends along a first direction;

[0008] a cylinder body, wherein the axis of the cylinder body is arranged along the first direction, a first piston is slidably provided in the cylinder body along the first direction, a side wall of the first piston is sealedly connected to the inner wall of the cylinder body to separate the inner cavity of the cylinder body into a first chamber and a second chamber, a first through hole is provided on the first piston to connect the first chamber and the second chamber, and a second through hole is opened on the side wall of the first chamber;

[0009] A valve device comprising a sealing plug, a sliding rod, and a first elastic member, wherein the sealing plug is connected to the first end of the sliding rod and is located in the second chamber, the sliding rod is disposed in the first through hole and the second through hole and extends along the first direction, the sliding rod is sealedly connected to the second through hole, the second end of the sliding rod is located outside the cylinder body, the first elastic member is connected between the first piston and the sliding rod, and the first elastic member is configured along the first direction to apply a positive elastic force along the first direction to the sliding rod so that the sealing plug can seal the first through hole;

[0010] The second piston is slidingly arranged in the cavity along the first direction and connected to the first piston. The side wall of the second piston is sealed with the inner wall of the cavity. A second elastic member is connected between the second piston and the impulse generator. The second elastic member is arranged along the first direction. The second elastic member is used to apply a reverse elastic force along the first direction to the impulse generator, so that the stopper abuts against the second end of the sliding rod and applies a reverse force along the first direction to the sliding rod, so that a set distance is provided between the sealing plug and the first through hole, so that the impact device reaches an initial state. The impulse generator can be subjected to a positive force along the first direction when the pressure in the cavity increases, and the second piston can be subjected to a reverse force along the first direction when the pressure in the cavity increases.

[0011] The impact device preferably has a plurality of first through holes and a plurality of second through holes, and the plurality of first through holes and second through holes are evenly distributed along the circumference of the cylinder body and correspond one to one, and the valve device is penetrated in the corresponding first through holes and second through holes.

[0012] The impact device is preferably configured such that the cylinder is hollow cylindrical, a sleeve is provided in the hollow portion of the cylinder, the sleeve is connected to the first piston, the sleeve slides with the cylinder along the axial direction of the cylinder, and the impulse generator is provided in the sleeve and slides with the sleeve along the axial direction of the sleeve.

[0013] In the impact device, preferably, the cylinder, sleeve and impulse generator are coaxial.

[0014] In the impact device, preferably, the second piston is connected to the sleeve.

[0015] The impact device, preferably, the second elastic member is used to apply a reverse elastic force along the first direction to the impulse generator, so that the stopper abuts against the second end of the sliding rod and the sleeve respectively, and a set distance is set between the sealing plug and the first through hole, so that the impact device reaches the initial state.

[0016] The impact device, preferably, the first end of the second piston faces the first end of the impulse generator, the cavity is located between the first end of the second piston and the first end of the impulse generator, the first end of the second piston and the first end of the impulse generator can be away from each other under the condition of pressure increase in the pressure cavity; the impulse generator is further provided with a pressure relief port, the pressure relief port is in communication with the cavity, the second piston can seal the pressure relief port under the condition that the impact device is in the initial state, and the first end of the second piston is located between the first end of the impulse generator and the pressure relief port.

[0017] The impact device, preferably, the sealing plug is a cone, the tip of the cone faces the first through hole.

[0018] The impact device, preferably, the sliding rod is provided with a baffle, the baffle extends along the radial direction of the sliding rod, and the first elastic member is clamped between the baffle and the first piston.

[0019] The impact device, preferably, the first elastic member and the second elastic member are springs, the first elastic member is sleeved on the sliding rod, and the second elastic member is sleeved on the second piston.

[0020] Based on the above, the impact device provided by the present invention can be connected to the bracket during use. Under the support of the block and the elastic action of the first elastic member and the second elastic member, the impact device is in an initial state. Thereafter, the pressure in the chamber increases, thereby causing the impulse generator to move forward in the first direction relative to the bracket to achieve an impact on the object. At the same time, the block moves away from the second end of the sliding rod and no longer applies a reverse force in the first direction to the second end of the sliding rod. The second piston overcomes the elastic force of the second elastic member and moves in the first direction relative to the bracket, thereby driving the first piston to move in the first direction relative to the bracket. The first piston approaches and contacts the sealing plug, thereby causing the sealing plug to seal the first through hole and close the first chamber and the second chamber. At this time, the pressure in the first chamber and the second chamber no longer changes, thereby positioning the first piston relative to the cylinder body, and simultaneously positioning the second piston relative to the cylinder body. Since the second piston is prevented from continuing to move in the first direction relative to the bracket, the loss of kinetic energy of the impulse generator caused by the second piston continuing to move in the first direction relative to the bracket can be avoided, thereby improving the use effect of the impact device. When the pressure in the cavity drops to a certain level, the second elastic member applies a reverse elastic force along the first direction to the impulse generator to make the impulse generator move in the reverse direction of the first direction. At the same time, the second elastic member applies a positive elastic force along the first direction to the second piston to make the second piston move in the positive direction of the first direction relative to the bracket, thereby making the first piston move in the positive direction relative to the sliding rod along the first direction, and making the first piston move away from the sealing plug to open the first through hole. Under the elastic action of the second elastic member, the sliding rod moves in the positive direction of the first direction with the first piston, and then the stopper abuts against the second end of the sliding rod again and applies a reverse force along the first direction to the sliding rod, so that the sealing plug and the first through hole maintain a set distance, thereby making the impact device reach an initial state. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of an impact device provided in an embodiment of the present invention.

[0022] Reference numerals:

[0023] 101: impulse generator; 102: stopper; 103: cavity;

[0024] 104: cylinder; 105: first piston; 106: first chamber;

[0025] 107: second chamber; 108: first through hole; 109: second through hole;

[0026] 110: Sealing plug; 111: Sliding rod; 112: First elastic member;

[0027] 113: second piston; 114: second elastic member; 115: sleeve;

[0028] 116: Pressure chamber; 117: Pressure relief port; 118: Baffle. DETAILED DESCRIPTION

[0029] In order to make the purposes, features, and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0030] Please refer to Figure 1The embodiment of the present invention provides an impact device, comprising: an impulse generator 101, a stopper 102 is provided on the impulse generator 101, a cavity 103 is formed in the impulse generator 101, and the cavity 103 extends along a first direction; a cylinder 104, the axis of the cylinder 104 is arranged along the first direction, a first piston 105 is provided in the cylinder 104 and slides along the first direction, the side wall of the first piston 105 is sealed with the inner wall of the cylinder 104 to separate the inner cavity of the cylinder 104 into a first chamber 106 and a second chamber 107, and the first piston 105 is provided with a first through hole 106. 08 is connected to the first chamber 106 and the second chamber 107, and a second through hole 109 is opened on the side wall of the first chamber 106; the valve device includes a sealing plug 110, a sliding rod 111 and a first elastic member 112, the sealing plug 110 is connected to the first end of the sliding rod 111 and is located in the second chamber 107, the sliding rod 111 is inserted into the first through hole 108 and the second through hole 109 and extends along the first direction, the sliding rod 111 is sealed and connected to the second through hole 109, the second end of the sliding rod 111 is located outside the cylinder body 104, the first piston 105 and the sliding rod 111 are connected. A first elastic member 112 is connected between the rods 111, and the first elastic member 112 is arranged along the first direction to apply a positive elastic force along the first direction to the sliding rod 111, so that the sealing plug 110 can seal the first through hole 108; a second piston 113 is arranged in the cavity 103 for sliding along the first direction and is connected to the first piston 105, and the side wall of the second piston 113 is sealed with the inner wall of the cavity 103, and a second elastic member 114 is connected between the second piston 113 and the impulse generator 101, and the second elastic member 114 is arranged along the first direction. 114 is used to apply a reverse elastic force along the first direction to the impulse generator 101, so that the stopper 102 abuts against the second end of the sliding rod 111 and applies a reverse force along the first direction to the sliding rod 111, so that there is a set distance between the sealing plug 110 and the first through hole 108, so that the impact device reaches an initial state, and the impulse generator 101 can be subjected to a positive force along the first direction when the pressure in the cavity 103 increases, and the second piston 113 can be subjected to a reverse force along the first direction when the pressure in the cavity 103 increases.

[0031] The impact device of this embodiment can be used to connect the cylinder 104 to the bracket. Under the support of the stopper 102 and the elastic action of the first elastic member 112 and the second elastic member 114, the impact device is in an initial state. Then, the pressure in the cavity 103 is increased, so that the impulse generator 101 moves forward relative to the bracket along the first direction to achieve the impact on the object. At the same time, the stopper 102 is away from the second end of the sliding rod 111 and no longer applies a reverse force along the first direction to the second end of the sliding rod 111. The second piston 113 overcomes the second piston 113. The elastic force of the elastic member 114 causes the first piston 105 to move in the opposite direction relative to the bracket in the first direction, thereby driving the first piston 105 to move in the opposite direction relative to the bracket in the first direction, thereby causing the first piston 105 to approach the sealing plug 110 and contact the sealing plug 110, thereby causing the sealing plug 110 to seal the first through hole 108 and close the first chamber 106 and the second chamber 107. At this time, the pressure in the first chamber 106 and the second chamber 107 no longer changes, thereby positioning the first piston 105 relative to the cylinder body 104, and simultaneously positioning the second piston 113 relative to the cylinder body 104. Since the second piston 113 is prevented from continuing to move in the opposite direction relative to the bracket in the first direction, the loss of kinetic energy of the impulse generator 101 caused by the second piston 113 continuing to move in the opposite direction relative to the bracket in the first direction can be avoided, thereby improving the performance of the impact device. When the pressure in the cavity 103 drops to a certain level, the second elastic member 114 applies a reverse elastic force along the first direction to the impulse generator 101 to make the impulse generator 101 move in the reverse direction of the first direction. At the same time, the second elastic member 114 applies a positive elastic force along the first direction to the second piston 113 to make the second piston 113 move in the positive direction of the first direction relative to the bracket, thereby making the first piston 105 move in the positive direction relative to the sliding rod 111 along the first direction, and making the first piston 105 move away from the sealing plug 110 to open the first through hole 108. Under the elastic action of the second elastic member 114, the sliding rod 111 moves in the positive direction of the first direction with the first piston 105. Then, the stopper 102 abuts against the second end of the sliding rod 111 again and applies a reverse force along the first direction to the sliding rod 111, so that the sealing plug 110 maintains a set distance from the first through hole 108, thereby making the impact device reach an initial state.

[0032] In addition, since the sliding rod 111 passing through the first through hole 108 has little resistance during the sliding process, it is helpful to reduce the energy consumption of the impact device during use, thereby helping to improve the use effect of the impact device.

[0033] In this embodiment, preferably, there are multiple first through holes 108 and second through holes 109, which are evenly distributed along the circumference of the cylinder body 104 and correspond to each other. A valve device is provided in each of the corresponding first through holes 108 and second through holes 109. This helps to make the force on the first piston 105 more balanced, thereby improving the performance of the impact device.

[0034] In this embodiment, the cylinder 104 is preferably hollow, with a sleeve 115 passing through the hollow portion of the cylinder 104. The sleeve 115 is connected to the first piston 105 and slides with the cylinder 104 along the axial direction of the cylinder 104. The impulse generator 101 is passed through the sleeve 115 and slides with the sleeve 115 along the axial direction of the sleeve 115. This helps to make the forces on the first piston 105 and the second piston 113 more balanced, thereby improving the performance of the impact device.

[0035] In this embodiment, preferably, the cylinder 104, the sleeve 115 and the impulse generator 101 are coaxial, thereby facilitating a more balanced force on the first piston 105 and the second piston 113, thereby improving the performance of the impact device.

[0036] In this embodiment, preferably, the second piston 113 is connected to the sleeve 115. This facilitates the connection between the second piston 113 and the first piston 105.

[0037] In this embodiment, the second elastic member 114 is preferably used to apply a reverse elastic force in the first direction to the impulse generator 101, so that the stopper 102 abuts the second end of the sliding rod 111 and the sleeve 115, respectively, and a predetermined distance is maintained between the sealing plug 110 and the first through hole 108, thereby bringing the impact device into an initial state. Thus, the abutment between the stopper 102 and the sleeve 115 balances the forces acting on the impact device, thereby reducing the forces acting on the first elastic member 112 and improving the reliability of the impact device.

[0038] In this embodiment, preferably, the first end of the second piston 113 faces the first end of the impulse generator 101, and the part of the cavity 103 between the first end of the second piston 113 and the first end of the impulse generator 101 is the pressure chamber 116. The first end of the second piston 113 and the first end of the impulse generator 101 can move away from each other when the pressure in the pressure chamber 116 increases; the impulse generator 101 is also provided with a pressure relief port 117, which is communicated with the cavity 103, and the second piston 113 can seal the pressure relief port 117 when the impact device is in the initial state, and the first end of the second piston 113 is located between the first end of the impulse generator 101 and the pressure relief port 117. Therefore, when the first end of the second piston 113 and the first end of the impulse generator 101 are able to move away from each other when the pressure in the pressure chamber 116 increases, the first end of the second piston 113 will move toward the pressure relief port 117 and cross the pressure relief port 117, thereby opening the pressure relief port 117 and rapidly reducing the pressure in the cavity 103, thereby reducing the force on the second elastic member 114 and improving the reliability of the impact device.

[0039] In this embodiment, preferably, the sealing plug 110 is a cone, with the tip of the cone facing the first through hole 108. Thus, the tip of the sealing plug 110 can enter the first through hole 108 for sealing, thereby improving the sealing performance of the sealing plug 110.

[0040] In this embodiment, preferably, a baffle 118 is provided on the sliding rod 111, and the baffle 118 extends radially along the sliding rod 111, and the first elastic member 112 is sandwiched between the baffle 118 and the first piston 105. This helps to improve the stability of the installation of the first elastic member 112.

[0041] In this embodiment, preferably, the first elastic member 112 and the second elastic member 114 are springs, the first elastic member 112 is sleeved on the sliding rod 111, and the second elastic member 114 is sleeved on the second piston 113. Thus, the stability of the installation of the first elastic member 112 and the second elastic member 114 is improved.

[0042] In this embodiment, preferably, the cylinder body 104 is an oil cylinder, thereby improving the reliability of the impact device.

[0043] In the description of this specification, reference to the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and integrate different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless otherwise inconsistent.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0045] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An impact device, characterized in that: include: An impulse generator, wherein a stopper is provided on the impulse generator, a cavity is formed in the impulse generator, and the cavity extends along a first direction; a cylinder body, wherein the axis of the cylinder body is arranged along the first direction, a first piston is slidably provided in the cylinder body along the first direction, a side wall of the first piston is sealedly connected to the inner wall of the cylinder body to separate the inner cavity of the cylinder body into a first chamber and a second chamber, a first through hole is provided on the first piston to connect the first chamber and the second chamber, and a second through hole is opened on the side wall of the first chamber; A valve device comprising a sealing plug, a sliding rod, and a first elastic member, wherein the sealing plug is connected to the first end of the sliding rod and is located in the second chamber, the sliding rod is disposed in the first through hole and the second through hole and extends along the first direction, the sliding rod is sealedly connected to the second through hole, the second end of the sliding rod is located outside the cylinder body, the first elastic member is connected between the first piston and the sliding rod, and the first elastic member is configured along the first direction to apply a positive elastic force along the first direction to the sliding rod so that the sealing plug can seal the first through hole; a second piston, slidably arranged in the cavity along the first direction and connected to the first piston, the side wall of the second piston is sealed with the inner wall of the cavity, a second elastic member is connected between the second piston and the impulse generator, the second elastic member is arranged along the first direction, the second elastic member is used to apply a reverse elastic force along the first direction to the impulse generator, so that the stopper abuts against the second end of the sliding rod and applies a reverse force along the first direction to the sliding rod, so that a set distance is set between the sealing plug and the first through hole, so that the impact device reaches an initial state, the impulse generator can be subjected to a positive force along the first direction when the pressure in the cavity increases, and the second piston can be subjected to a reverse force along the first direction when the pressure in the cavity increases; There are a plurality of the first through holes and the second through holes, and the plurality of the first through holes and the second through holes are evenly distributed along the circumference of the cylinder body and correspond to each other one by one, and the valve device is passed through the corresponding first through holes and the second through holes; The sliding rod is provided with a baffle, which extends in the radial direction of the sliding rod. The first elastic member is sandwiched between the baffle and the first piston.

2. The impact device according to claim 1, characterized in that The cylinder body is in the shape of a hollow cylinder, a sleeve is passed through the hollow part of the cylinder body, the sleeve is connected to the first piston, the sleeve is slidably matched with the cylinder body along the axial direction of the cylinder body, and the impulse generator is passed through the sleeve and slidably matched with the sleeve along the axial direction of the sleeve.

3. The impact device according to claim 2, characterized in that The cylinder, sleeve and impulse generator are coaxial.

4. The impact device according to claim 2, characterized in that The second piston is connected to the sleeve.

5. The impact device according to claim 2, characterized in that The second elastic member is used to apply a reverse elastic force along the first direction to the impulse generator, so that the stopper abuts against the second end of the sliding rod and the sleeve respectively, and a set distance is set between the sealing plug and the first through hole, so that the impact device reaches the initial state.

6. The impact device according to claim 1, characterized in that The first end of the second piston faces the first end of the impulse generator, and the portion of the cavity between the first end of the second piston and the first end of the impulse generator is a pressure chamber. The first end of the second piston and the first end of the impulse generator can move away from each other when the pressure in the pressure chamber increases. The impulse generator is also provided with a pressure relief port, which is communicated with the cavity. The second piston can seal the pressure relief port when the impact device is in the initial state, and the first end of the second piston is located between the first end of the impulse generator and the pressure relief port.

7. The impact device according to claim 1, characterized in that The sealing plug is a cone, and the tip of the cone faces the first through hole.

8. The impact device according to any one of claims 1 to 7, characterized in that: The first elastic member and the second elastic member are springs. The first elastic member is sleeved on the sliding rod, and the second elastic member is sleeved on the second piston.

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