Reset support device and vibration table

Abstract

The application provides a reset supporting device and a vibration table, and the reset supporting device comprises a piston cylinder, a moving coil assembly and a reset member, wherein the piston cylinder comprises a cylinder body, a piston and an extension rod, and the cylinder body is internally provided with an air chamber; the moving coil assembly comprises a supporting assembly and a workbench, wherein the supporting assembly is slidably arranged on the cylinder body, and the workbench is arranged on the top of the supporting assembly; the piston is slidably arranged in the air chamber; the two ends of the extension rod are fixedly connected with the workbench and the piston respectively; the reset member is arranged in the air chamber, and the two ends of the reset member are connected with the extension rod and the cylinder body respectively, and the reset member is suitable for applying a downward reset force to the extension rod. The reset supporting device with the structure can apply a downward reset force to the extension rod by the reset member when the moving coil assembly moves downward, so as to assist the moving coil assembly to move downward and reset, to compensate the power of the moving coil assembly, to reduce the power loss caused by the lag of the automatic centering system, and to effectively ensure the performance index of the large displacement vibration table.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vibration table, in particular to a reset supporting device and a vibration table. BACKGROUND

[0002] The moving coil is the core moving part of the electric vibration table, and the moving coil is suspended in the annular air gap of the vibration table through the air spring below. The moving coil is connected with the driving coil below, and when the alternating current passes through the driving coil, the electromagnetic force will be generated on the winding of the driving coil, so that the moving coil moves up and down reciprocatingly.

[0003] The air spring determines the stroke of the moving coil, and the effective stroke of the air spring is small, which limits the stroke of the moving coil. The existing supporting device capable of providing large stroke for the moving coil includes a piston cylinder, a piston rod and a piston, the piston cylinder is provided with a gas chamber inside, the piston is slidably arranged in the gas chamber, the moving coil is suspended in the annular air gap of the piston cylinder, one end of the piston rod extends out of the piston cylinder to connect the workbench of the moving coil to support the moving coil, the lower end of the piston rod is connected with the piston, one end of the piston cylinder is connected with an inflation device, and the inflation device inflates the gas chamber below the piston to support the piston rod and the moving coil. When the moving coil moves upward, the effective volume of the lower gas chamber increases, and under the condition that the inflation amount is not changed, the pressure of the lower gas chamber decreases, at this time, the gravity of the moving coil will be greater than the supporting force of the lower gas chamber; on the contrary, when the moving coil moves downward, the pressure of the lower gas chamber increases, and the gravity of the moving coil will be less than the supporting force. In order to keep the gravity and the supporting force of the moving coil in a balanced state, the vibration table system generally sets an automatic centering system.

[0004] The automatic centering system includes an MPCS system (multi-path control system) and a sensor. When the sensor senses that the moving coil moves upward, the MPCS system will feedback to the inflation device to increase the air intake. Since the feedback system inevitably has a delay, when the piston has moved upward, but the lower gas chamber has not been filled with high-pressure gas, a certain vacuum degree is generated in the lower gas chamber, which is beneficial to the air intake of the lower gas chamber and does not affect the operation of the moving coil. However, when the moving coil moves downward, due to the delay of the feedback system, the decrease of the gas in the lower gas chamber always lags behind the displacement of the moving coil, and the supporting force is greater than the gravity of the moving coil, which will hinder the movement of the moving coil, resulting in power loss of the vibration table and affecting the performance index of the large displacement vibration table. SUMMARY

[0005] Therefore, the technical problem to be solved by the present application is to overcome the defect of power loss of the supporting device of the vibration table in the prior art when the moving coil moves downward.

[0006] To this end, the present application provides a reset supporting device, which comprises

[0007] a piston cylinder, a piston rod and a piston, the piston cylinder is provided with a gas chamber inside, the piston is slidably arranged in the gas chamber, the moving coil is suspended in the annular air gap of the piston cylinder, one end of the piston rod extends out of the piston cylinder to connect the workbench of the moving coil to support the moving coil, the lower end of the piston rod is connected with the piston, one end of the piston cylinder is connected with an inflation device, and the inflation device inflates the gas chamber below the piston to support the piston rod and the moving coil. When the moving coil moves upward, the effective volume of the lower gas chamber increases, and under the condition that the inflation amount is not changed, the pressure of the lower gas chamber decreases, at this time, the gravity of the moving coil will be greater than the supporting force of the lower gas chamber; on the contrary, when the moving coil moves downward, the pressure of the lower gas chamber increases, and the gravity of the moving coil will be less than the supporting force. In order to keep the gravity and the supporting force of the moving coil in a balanced state, the vibration table system generally sets an automatic centering system.

[0008] A moving coil assembly comprises a support assembly and a workbench, wherein the support assembly is arranged to slide up and down on the cylinder body, and the workbench is arranged on the top of the support assembly; two ends of a telescopic rod are fixedly connected with the workbench and the piston respectively.

[0009] A reset member is arranged in the air chamber, and two ends of the reset member are connected with the telescopic rod and the cylinder body respectively, and the reset member is adapted to apply a downward reset force to the telescopic rod.

[0010] Optionally, in the reset support device, the reset member is an elastic member.

[0011] Optionally, in the reset support device, the elastic member is a tension spring, the tension spring is arranged in the air chamber at the lower end of the piston, and two ends of the tension spring are connected with the telescopic rod and the bottom cover of the cylinder body respectively.

[0012] Optionally, in the reset support device, the bottom end of the telescopic rod protrudes from the bottom surface of the piston rod, and the top end of the tension spring is connected to the bottom end of the telescopic rod.

[0013] Optionally, in the reset support device, a fixing seat is protrusively arranged on the bottom cover of the cylinder body, a mounting groove is arranged on the bottom of the telescopic rod and the fixing seat, and the hooks of the two ends of the tension spring are respectively embedded in the upper and lower mounting grooves; a hanging member is transversely arranged in any of the mounting grooves, and the hooks of the tension spring are hung on the hanging member.

[0014] Optionally, in the reset support device, the hanging member is a fastening bolt, and the fastening bolt is fixed on the fixing seat or the telescopic rod through a first locking nut.

[0015] Optionally, in the reset support device, the hooks of the tension spring are wrapped with a damping member, the outer wall of the damping member abuts against the inner wall of the mounting groove, and the damping member is used to reduce the vibration of the tension spring and prevent the hooks from moving left and right relative to the mounting groove.

[0016] Optionally, in the reset support device, a limiting step is arranged on the telescopic rod at the top of the piston, and a second locking nut is arranged on the telescopic rod at the bottom of the piston.

[0017] Optionally, in the reset support device, the support assembly comprises a connecting disc and a plurality of support rods, the connecting disc is arranged below the bottom cover of the cylinder body, and two ends of each support rod are connected with the workbench and the connecting disc respectively.

[0018] A lower guide rod is arranged at the bottom of the bottom cover of the cylinder body, and the connecting disc is slidingly sleeved on the lower guide rod; and / or

[0019] A weight-reducing groove is arranged at the bottom of the piston.

[0020] The application provides a vibration table comprising the reset support device.

[0021] The application has the following advantages:

[0022] 1. The reset support device provided by the application can apply a downward reset force to the telescopic rod when the moving coil assembly moves downward, thereby assisting the moving coil assembly to move downward and reset, compensating for the power of the moving coil assembly, reducing the power loss caused by the hysteresis of the automatic centering system, and effectively ensuring the performance index of the large displacement vibration table.

[0023] 2. The reset member is an elastic member that always applies a downward reset force to the telescopic rod, thereby compensating for the power loss of the moving coil assembly in real time during the downward movement of the moving coil assembly and avoiding the hysteresis of the reset force application affecting the downward movement of the moving coil assembly.

[0024] 3. The hooks at both ends of the tension spring are embedded in the mounting groove, thereby reducing the space occupied by the tension spring.

[0025] 4. The damping member limits the left and right movement of the tension spring, thereby preventing the tension spring from moving leftward and rightward to contact the internal components of the piston cylinder during the vibration of the vibration table; and the damping member also has a damping effect, thereby reducing the vibration generated during the operation of the vibration table. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the specific embodiments or the prior art, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments or the prior art. Obviously, the drawings described below are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0027] Figure 1 FIG. 1 is a schematic view of the reset support device provided by the application for the embodiment 1;

[0028] Figure 2 FIG. 2 is a schematic view of the cooperation between the tension spring and the telescopic rod in the reset support device provided by the application for the embodiment 1;

[0029] Figure 3 FIG. 3 is a top view of the closure in the embodiment 1 of the application. Figure 1

[0030] Legend of reference signs:

[0031] ​1, piston cylinder; 11, cylinder body; 111, air chamber; 12, piston; 121, lightening groove; 13, telescopic rod; 131, limiting step; 14, cover; 15, fixing seat; 151, mounting groove; 2, moving coil assembly; 21, support assembly; 211, connecting disc; 212, support rod; 213, lower guide rod; 22, workbench; 3, reset member; 4, hanging member; 5, damping member; 6, first lock nut; 7, second lock nut. DETAILED DESCRIPTION

[0032] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0036] Embodiment 1

[0037] The present embodiment provides a reset support device, such as Figure 1As shown, it comprises a piston cylinder 1, a moving coil assembly 2 and a reset member 3, wherein the piston cylinder 1 comprises a cylinder body 11, a piston 12 and an extension rod 13, the cylinder body 11 is internally provided with a gas chamber 111; the moving coil assembly 2 comprises a support assembly 21 and a workbench 22, wherein the support assembly 21 is slidably arranged on the cylinder body 11, and the workbench 22 is arranged on the top of the support assembly 21; the piston 12 is slidably arranged in the gas chamber 111; the extension rod 13 is fixedly connected with the workbench 22 and the piston 12 at two ends thereof; the reset member 3 is arranged in the gas chamber 111, and the two ends of the reset member 3 are connected with the extension rod 13 and the cylinder body 11, respectively, and the reset member 3 is adapted to apply a downward reset force to the extension rod 13.

[0038] The reset support device of this structure, when the moving coil assembly 2 moves downward, the reset member 3 applies a downward reset force to the extension rod 13, which assists the moving coil assembly 2 to move downward and resets, compensates the power of the moving coil assembly 2, reduces the power loss caused by the lag of the automatic centering system, and effectively ensures the performance index of the large displacement vibration table.

[0039] Optionally, the reset member 3 is an elastic member, and the two ends of the elastic member are connected with the extension rod 13 and the cylinder body 11, and during the operation of the moving coil assembly 2, the elastic member always applies a downward reset force to the extension rod 13, so as to compensate the power loss of the moving coil assembly 2 in real time during the downward movement of the moving coil assembly 2, and avoid the influence of the reset force application lag on the downward movement of the moving coil assembly 2. The gas chamber 111 at the upper part of the piston 12 is in communication with the atmosphere, and during the upward movement of the moving coil assembly 2, only the air inlet amount of the gas chamber 111 below the piston 12 needs to be ensured, and the piston 12 can drive the moving coil assembly 2 to move upward.

[0040] Specifically, referring to Figure 1 and Figure 3 , the cylinder body 11 comprises a side portion, a top cover and a bottom cover, the middle portion of the top cover is provided with a mounting hole, the mounting hole is mounted with a cover 14, the cover 14 is provided with a vent hole, and the vent hole is in communication with the gas chamber 111 at the upper part of the piston 12.

[0041] Optionally, the elastic member is a tension spring, and the tension spring is arranged in the gas chamber 111 at the lower end of the piston 12; the two ends of the tension spring are connected with the extension rod 13 and the bottom cover of the cylinder body 11, respectively, so as to apply a downward tension to the extension rod 13; the tension spring is arranged in the gas chamber 111 at the lower end of the piston 12, which is convenient for installation.

[0042] Referring to Figure 1 and Figure 2The bottom end of the telescopic rod 13 extends out of the bottom surface of the piston 12, and the top end of the tension spring is connected to the bottom end of the telescopic rod 13. Specifically, a fixed seat 15 is protrudedly arranged on the bottom cover of the cylinder 11, the bottom of the telescopic rod 13 and the fixed seat 15 are provided with mounting grooves 151, and the hooks at the two ends of the tension spring are respectively embedded in the upper and lower mounting grooves 151; a hanging piece 4 is transversely arranged in any mounting groove 151, and the hooks of the tension spring are hung on the hanging piece 4 to fix the two ends of the tension spring on the telescopic rod 13 and the fixed seat 15 respectively. The hooks at the two ends of the tension spring are embedded in the mounting grooves 151, so that the structure is compact and the space occupied by the tension spring is reduced. For example, the fixed seat 15 is arranged separately from the bottom cover, and the fixed seat 15 is fixed on the bottom cover by bolts.

[0043] Alternatively, the hanging piece 4 is a fastening bolt, and the fastening bolt is fixed on the fixed seat 15 or the telescopic rod 13 by the first locking nut 6. That is, one fastening bolt is arranged in each mounting groove 151 on the telescopic rod 13 and the fixed seat 15, and the hooks of the tension spring are hung on the fastening bolts. When the tension spring is installed, the hooks at the two ends of the tension spring are first embedded in the mounting grooves 151 at the two ends, and then the fastening bolts are passed through the middle of the hooks to hang the hooks of the tension spring on the fastening bolts, so that the tension spring is conveniently installed and fixed. The fastening bolts are tightly fixed by the first locking nut 6 to prevent the fastening bolts from loosening and falling off after the vibration table works for a long time.

[0044] Preferably, referring to Figure 2 The hooks of the tension spring are wrapped with a damping piece 5, and the outer wall of the damping piece 5 abuts against the inner wall of the mounting groove 151. The damping piece 5 is used to reduce the vibration of the tension spring and prevent the hooks from moving left and right relative to the mounting groove 151. The damping piece 5 limits the left and right movement of the tension spring, preventing the tension spring from contacting the internal components of the piston cylinder 1 during the vibration of the vibration table. The damping piece 5 also has a damping effect, which can reduce the vibration generated during the operation of the vibration table.

[0045] For example, the damping piece 5 is a nylon sleeve, and the outer peripheral walls at the left and right ends of the nylon sleeve extend radially to form extension portions, which wrap the hooks from three sides together with the outer peripheral wall at the middle of the nylon sleeve, preventing the hooks from moving and contacting the fastening bolts and the groove walls of the mounting groove 151. When the tension spring is installed, the nylon sleeve can be first sleeved on the hooks, and then the hooks and the nylon sleeve are embedded in the mounting groove 151, and the fastening bolts are passed through the inner hole of the nylon sleeve. Preferably, each nylon sleeve is arranged in two halves, and the two half nylon sleeves are arranged at a certain distance in the axial direction, so as to adjust the axial gap between the two half nylon sleeves, and embed the nylon sleeve in the mounting groove 151.

[0046] Referring to Figure 2A limiting step 131 is arranged on the telescopic rod 13 at the top of the piston 12, and an external thread for mounting the second lock nut 7 is machined on the telescopic rod 13 at the bottom of the piston 12. The telescopic rod 13 is fixed on the piston 12 at the two ends thereof through the limiting step 131 and the second lock nut 7 respectively, and the piston 12 is conveniently connected with the telescopic rod 13 without machining a thread in the inner hole of the piston 12, which facilitates the machining of the piston 12.

[0047] Referring to Figure 1 The support assembly 21 comprises a connecting disc 211 and a plurality of support rods 212. The connecting disc 211 is arranged below the bottom cover of the cylinder body 11, and the two ends of the support rods 212 are connected with the workbench 22 and the connecting disc 211 respectively. A lower guide rod 213 is arranged at the bottom of the bottom cover of the cylinder body 11, and the connecting disc 211 is slidably sleeved on the lower guide rod 213, so as to guide the plurality of support rods 212 to slide up and down through the up-and-down movement of the connecting disc 211. The support rods 212 are slidably arranged in the bottom cover and are in clearance fit with the inner hole wall of the bottom cover, so as to prevent the support rods 212 from being stuck, and the support rods 212 are conveniently installed. A first linear bearing is arranged in the middle of the connecting disc 211, and the first linear bearing is sleeved on the lower guide rod 213, so as to guide the plurality of support rods 212 to vertically lift through one first linear bearing. The support assembly 21 further comprises a plurality of upper guide rods and connecting rods, and the guide rods and the connecting rods are arranged in one-to-one correspondence with the support rods 212. The upper guide rods are connected with the workbench 22 at the top thereof, and the upper guide rods are connected with the connecting rods at the bottom thereof. The connecting rods are connected with the support rods 212 at the bottom thereof, and the connecting rods are provided for the driving coil. A second linear bearing is arranged on the top cover of the cylinder body 11 in one-to-one correspondence with the upper guide rods, and the upper guide rods are slidably arranged in the second linear bearing, so as to guide the workbench 22 to vertically lift through the upper guide rods. A third linear bearing is arranged on the cover 14, and the third linear bearing is used to guide the telescopic rod 13 to vertically lift.

[0048] Referring to Figure 2 Optionally, the piston 12 is made of steel, and a weight-reducing groove 121 is arranged at the bottom of the piston 12, so as to reduce the weight of the piston 12 and the total weight of the large moving coil assembly 2.

[0049] Referring to Figure 1 A center magnetic pole is arranged in the middle of the cylinder body 11, and a hole is formed in the inside of the center magnetic pole to form an air chamber 111. The diameter of the lower part of the air chamber 111 is smaller than that of the upper part thereof, so as to prevent the piston 12 from sliding to the bottom of the air chamber 111.

[0050] The piston 12 is sealed between the piston rod and the piston 12 through an O-ring 8, and the piston 12 is sealed between the piston 12 and the inner wall of the air chamber 111 through a combined sealing ring 9.

[0051] As a first alternative embodiment of the embodiment 1, a linear bearing can be arranged on the bottom cover of the piston 12, and the support rods 212 are arranged in the linear bearing to guide the support rods 212 to vertically move up and down.

[0052] As the second alternative embodiment of the embodiment 1, the telescopic rod 13 can also be screwed on the piston 12, at this time, the bottom of the telescopic rod 13 can be extended out of the bottom surface of the piston 12 or located inside the piston 12, when the bottom of the telescopic rod 13 is extended out of the bottom surface of the piston 12, the tension spring is connected to the bottom end of the telescopic rod 13; when the bottom of the telescopic rod 13 is located inside the piston 12, the hanging piece 4 can be formed on the bottom of the piston 12 to connect the tension spring.

[0053] As the third alternative embodiment of the embodiment 1, the damping piece 5 can also be a pearl cotton sleeve or a non-woven fabric sleeve, which can reduce the vibration generated by the workbench 22 and limit the left and right of the tension spring.

[0054] As the fourth alternative embodiment of the embodiment 1, the hanging piece 4 can also be a crossbar integrally formed on the telescopic rod 13, the crossbar is arranged across the mounting groove 151, and the tension spring hook is hung on the crossbar.

[0055] As the fifth alternative embodiment of the embodiment 1, the elastic piece can also be a compression spring, the compression spring is arranged in the air chamber 111 at the upper end of the piston 12, the compression spring is connected to the top cover and the telescopic rod 13 at both ends, and the compression spring applies a downward pressure to the telescopic rod 13 to assist the downward movement of the moving coil assembly 2.

[0056] As a further deformation, the reset piece 3 can also be a pneumatic cylinder, the pneumatic cylinder is arranged in the air chamber 111 at the upper part of the piston 12 or the lower part of the piston 12, one end of the pneumatic cylinder is fixed to the top cover or the bottom cover, the other end of the pneumatic cylinder is connected to the telescopic rod 13, the moving coil assembly 2 moves up and down periodically, when the moving coil assembly 2 moves downward, the pneumatic cylinder always applies a downward reset force to the piston 12 in advance.

[0057] Embodiment 2

[0058] The embodiment provides a vibration table, which comprises the reset support device in the embodiment 1. When the moving coil assembly 2 of the vibration table moves downward, the reset piece 3 applies a downward reset force to the telescopic rod 13 to assist the downward reset of the moving coil assembly 2, power compensation is performed on the moving coil assembly 2, power loss caused by the lag of the automatic centering system is reduced, and the performance index of the large displacement vibration table is effectively ensured.

[0059] Obviously, the above embodiments are only examples for clear illustration, and are not limitations on the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments do not need to be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A reset support device, characterized by, The utility model provides a kind of reset support device, including: Piston cylinder (1), it includes cylinder (11), piston (12) and telescopic rod (13), wherein, cylinder (11) inside is provided with air chamber (111);Piston (12) is slidably arranged in the air chamber (111); Moving coil assembly (2), including support assembly (21) and workbench (22), wherein, the support assembly (21) is slidably arranged on the cylinder (11), and the workbench (22) is arranged on the top of the support assembly (21);The two ends of the telescopic rod (13) are fixedly connected with the workbench (22) and the piston (12) respectively; Reset member (3) is arranged in the air chamber (111), and the two ends of the reset member (3) are connected with the telescopic rod (13) and the cylinder (11) respectively, and the reset member (3) is suitable for applying downward reset force to the telescopic rod (13). The reset member (3) is an elastic member. The elastic member is a tension spring, and the tension spring is arranged in the air chamber (111) at the lower end of the piston (12);The two ends of the tension spring are connected with the bottom cover of the cylinder (11) and the telescopic rod (13) respectively. The bottom end of the telescopic rod (13) protrudes from the bottom surface of the piston (12), and the top end of the tension spring is connected to the bottom end of the telescopic rod (13). A fixing seat (15) is protrudingly arranged on the bottom cover of the cylinder (11), and the bottom of the telescopic rod (13) and the fixing seat (15) are provided with mounting grooves (151), and the hooks of the two ends of the tension spring are respectively embedded in the upper and lower mounting grooves (151);A hanging member (4) is transversely arranged in any mounting groove (151), and the hooks of the tension spring are hung on the hanging member (4). The hooks of the tension spring are wrapped with a damping member (5), and the outer wall of the damping member (5) abuts against the inner wall of the mounting groove (151), and the damping member (5) is used for reducing the vibration of the tension spring and preventing the hooks from moving left and right relative to the mounting groove (151).

2. The reset support apparatus according to claim 1, characterized by The hanging member (4) is a fastening bolt, and the fastening bolt is fixed on the fixing seat (15) or the telescopic rod (13) by a first lock nut (6).

3. The reset support apparatus according to claim 1 or 2, characterized by A limiting step (131) is arranged on the telescopic rod (13) at the top of the piston (12), and a second lock nut (7) is arranged on the telescopic rod (13) at the bottom of the piston (12).

4. The reset support apparatus according to claim 1 or 2, characterized by The support assembly (21) includes a connecting disc (211) and a plurality of support rods (212), the connecting disc (211) is arranged below the bottom cover of the cylinder (11), and the two ends of the support rod (212) are connected with the workbench (22) and the connecting disc (211) respectively. A lower guide rod (213) is arranged on the bottom of the bottom cover of the cylinder (11), and the connecting disc (211) is slidably sleeved on the lower guide rod (213);And / or A weight-reducing groove (121) is arranged at the bottom of the piston (12).

5. A vibration table, characterized by The utility model provides a kind of reset support device, including: Piston cylinder (1), it includes cylinder (11), piston (12) and telescopic rod (13), wherein, cylinder (11) inside is provided with air chamber (111);Piston (12) is slidably arranged in the air chamber (111); Moving coil assembly (2), including support assembly (21) and workbench (22), wherein, the support assembly (21) is slidably arranged on the cylinder (11), and the workbench (22) is arranged on the top of the support assembly (21);The two ends of the telescopic rod (13) are fixedly connected with the workbench (22) and the piston (12) respectively; Reset member (3) is arranged in the air chamber (111), and the two ends of the reset member (3) are connected with the telescopic rod (13) and the cylinder (11) respectively, and the reset member (3) is suitable for applying downward reset force to the telescopic rod (13). The reset member (3) is an elastic member. The elastic member is a tension spring, and the tension spring is arranged in the air chamber (111) at the lower end of the piston (12);The two ends of the tension spring are connected with the bottom cover of the cylinder (11) and the telescopic rod (13) respectively. The bottom end of the telescopic rod (13) protrudes from the bottom surface of the piston (12), and the top end of the tension spring is connected to the bottom end of the telescopic rod (13). A fixing seat (15) is protrudingly arranged on the bottom cover of the cylinder (11), and the bottom of the telescopic rod (13) and the fixing seat (15) are provided with mounting grooves (151), and the hooks of the two ends of the tension spring are respectively embedded in the upper and lower mounting grooves (151);A hanging member (4) is transversely arranged in any mounting groove (151), and the hooks of the tension spring are hung on the hanging member (4). The hooks of the tension spring are wrapped with a damping member (5), and the outer wall of the damping member (5) abuts against the inner wall of the mounting groove (151), and the damping member (5) is used for reducing the vibration of the tension spring and preventing the hooks from moving left and right relative to the mounting groove (151). The hanging member (4) is a fastening bolt, and the fastening bolt is fixed on the fixing seat (15) or the telescopic rod (13) by a first lock nut (6). A limiting step (131) is arranged on the telescopic rod (13) at the top of the piston (12), and a second lock nut (7) is arranged on the telescopic rod (13) at the bottom of the piston (12). The support assembly (21) includes a connecting disc (211) and a plurality of support rods (212), the connecting disc (211) is arranged below the bottom cover of the cylinder (11), and the two ends of the support rod (212) are connected with the workbench (22) and the connecting disc (211) respectively. A lower guide rod (213) is arranged on the bottom of the bottom cover of the cylinder (11), and the connecting disc (211) is slidably sleeved on the lower guide rod (213);And / or A weight-reducing groove (121) is arranged at the bottom of the piston (12). The utility model provides a kind of reset support device, including: Piston cylinder (1), it includes cylinder (11), piston (12) and telescopic rod (13), wherein, cylinder (11) inside is provided with air chamber (111);Piston (12) is slidably arranged in the air chamber (111); Moving coil assembly (2), including support assembly (21) and workbench (22), wherein, the support assembly (21) is slidably arranged on the cylinder (11), and the workbench (22) is arranged on the top of the support assembly (21);The two ends of the telescopic rod (13) are fixedly connected with the workbench (22) and the piston (12) respectively; Reset member (3) is arranged in the air chamber (111), and the two ends of the reset member (3) are connected with the telescopic rod (13) and the cylinder (11) respectively, and the reset member (3) is suitable for applying downward reset force to the telescopic rod (13).

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