CN115574036B

CN115574036B - Damper

Info

Publication number: CN115574036B
Application number: CN202211471284.3A
Authority: CN
Inventors: 周保荣; 陈更生; 刘军
Original assignee: Taizhou Bright Machinery Manufacturing Co ltd
Current assignee: Taizhou Bright Machinery Manufacturing Co ltd
Priority date: 2022-11-23
Filing date: 2022-11-23
Publication date: 2023-04-07
Anticipated expiration: 2042-11-23
Also published as: CN115574036A

Abstract

The invention relates to the technical field of dampers, in particular to a damper, which comprises: the device comprises an outer cylinder, a piston rod, an inner cylinder, an adjusting mechanism, a transmission mechanism, a locking mechanism and an oil storage cavity; according to the invention, the piston rod is compressed, so that the damping liquid drives the adjusting plate to move through the transmission mechanism, namely the adjusting plate returns to the maximum damping force, the rear piston rod is reset, the damping liquid flows reversely, the adjusting plate is driven through the transmission mechanism to gradually cover the first damping hole and the second damping hole so as to adjust the areas of the first damping hole and the second damping hole, namely the damping force is adjusted, and thus the requirements of different damping forces can be met.

Description

Damper

Technical Field

The invention relates to the technical field of dampers, in particular to a damper.

Background

The damper is a device for providing motion resistance and consuming motion energy, and is widely applied to the field of anti-seismic and shock absorption. The working principle of the traditional hydraulic damper is as follows: when the hydraulic damper is stressed, the piston rod is prevented from moving backwards under the action of the restriction of a hydraulic oil hole and the pressure of a spring, the damping effect is achieved, the pressure is cancelled, the check valve of the other oil duct is automatically opened to quickly return oil under the action of a return spring, and the piston rod returns to the original position; 2. the magnitude of the damping force has no correlation with the displacement of the piston rod, and the requirement that when the piston is close to a dead point, a larger damping force is provided to control the posture of a damping object cannot be met.

Disclosure of Invention

The present invention has been made in view of the above problems, and an object of the present invention is to provide a damper that can adjust the size of a damping hole to adjust different damping values, and can control the posture of a damping object by gradually increasing the damping value when a piston rod is compressed:

a damper, comprising: the device comprises an outer cylinder, a piston rod, an inner cylinder, an adjusting mechanism, a transmission mechanism, a locking mechanism and an oil storage cavity;

the outer cylinder is formed by connecting a first cylinder body and a second cylinder body in a head-tail manner;

the inner cylinder is arranged in the first cylinder body, two sides of the inner cylinder are respectively provided with a baffle plate, two ends of the inner cylinder are provided with a first damping hole and a second damping hole, and the first damping hole and the second damping hole are arranged in a staggered mode;

the adjustment mechanism includes: the connecting plate is annular, the connecting plate is fixed in the first cylinder body, a first liquid flow hole and a second liquid flow hole are formed in the upper portion and the lower portion of one side of the connecting plate respectively, the rotating plate is nested in the connecting plate, the wall surface of one side of the rotating plate is rotatably connected with the end portion of the inner cylinder, a first circular groove is formed in the axis of the wall surface of the other side of the rotating plate, the number of the adjusting plates is two, the length of each adjusting plate is the same as that of the inner cylinder, one end of each adjusting plate is fixed with the rotating plate, the two adjusting plates are attached to the inner cylinder, and the two adjusting plates are initially and respectively located on one side of the first damping hole and one side of the second damping hole;

drive mechanism is located the one side that circular recess one was seted up to the commentaries on classics board, drive mechanism includes: casing, pivot, blade, barrier plate, sealed bearing, oil blanket two, axle one, axle two, spring three, casing one end is open face, the open face of casing is fixed with the connecting plate, the axle center department of casing one side wall sets up sealed bearing, sealed bearing's inner circle is fixed with oil blanket two, oil blanket two is provided with circular recess two, the both ends nestification of pivot is in circular recess two and circular recess one, the interval department of pivot tip and circular recess one wall is provided with spring three, the blade slides and sets up in the pivot, the fixed casing inner wall of barrier plate one end, other end laminating pivot, the diameter of axle one is greater than axle two, be provided with the recess of anastomosis axle one and axle two diameter in the pivot, the axle one runs through oil blanket two axles and extends into the pivot, and the other end is located the second cylinder body, the position that axle one is located the second cylinder body sets up spacing ring and support the plywood, some intervals between spacing ring and the support plywood, be the friction portion between spacing ring and the support plywood, support the first position of axle and the second cylinder body and be provided with the spring in the pivot along the circular recess, the pivot is nested with the one, the spring position of two, the pivot is greater than the pivot, the pivot is nested portion of fixing the pivot, the pivot is provided with the one, the round recess of spring is in the round recess, the pivot is provided with the pivot.

Preferably, piston rod one end runs through first cylinder body and extends into the inner casing with oil blanket one in, the extension end of piston rod sets up the piston, the piston is initially located the middle part of inner casing, the inside both ends of inner casing are provided with spacing portion respectively, spacing portion prevents piston shutoff damping hole one and damping hole two with the biggest displacement who limits the piston, be provided with spring one on the piston rod, spring one drives automatic re-setting after the piston rod compression.

Preferably, the locking mechanism is provided on the second cylinder, and the locking mechanism includes: screw rod, nut, locking piece, limiting plate, on the arc wall of the fixed second cylinder body of nut, the screw rod meshing is in the nut, the screw rod is ninety contained angles with axle one, the screw rod rotates the connection locking piece towards the one end of axle one, the locking piece is provided with back the arc friction disc towards the one side of axle one, the wall laminating limiting plate of locking piece both sides, wherein the friction disc supports with the friction portion of axle one and closes.

Preferably, one end of the oil storage cavity is communicated with the inside of the first cylinder body, the other end of the oil storage cavity is provided with an air hole, and a piston head is arranged in the oil storage cavity.

Advantageous effects

According to the invention, the piston rod is compressed, so that the damping liquid drives the adjusting plate to move to one side of the first damping hole and the second damping hole through the transmission mechanism, namely the maximum damping force is returned, the piston rod is reset, the damping liquid flows reversely, the adjusting plate is driven through the transmission mechanism to gradually cover the first damping hole and the second damping hole, so that the areas of the first damping hole and the second damping hole are adjusted, namely the damping force is adjusted, and thus the requirements of different damping forces can be met.

According to the invention, the locking block is separated from the first shaft by twisting the screw rod, so that in the reciprocating movement process of the piston, the two adjusting plates gradually cover the first damping hole and the second damping hole and open the first damping hole and the second damping hole, so that the damping force is gradually increased when the piston rod is compressed, and the posture of a damping object is controlled by a larger damping force.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is an exploded view of the present invention.

FIG. 3 is a schematic view of the internal structure of the present invention.

FIG. 4 is a schematic view of a first orifice and a second orifice of the inner cylinder of the present invention.

Fig. 5 is a schematic structural diagram of the adjusting mechanism of the present invention.

Fig. 6 is a schematic cross-sectional structure diagram of the adjusting mechanism of the present invention.

Fig. 7 is a schematic view of the internal structure of the transmission mechanism of the present invention.

FIG. 8 is a schematic view of a side structure of the transmission mechanism of the present invention.

Fig. 9 is a schematic view of the locking mechanism of the present invention.

FIG. 10 is a partial schematic view of the locking mechanism of the present invention.

Fig. 11 is a schematic view of the reservoir chamber of the present invention.

FIG. 12 is a schematic view of the engaging rotary plate of the transmission mechanism of the present invention.

FIG. 13 is a schematic view of the blade of the present invention flipped over.

FIG. 14 is a schematic view of an adjusting plate covering a first orifice and a second orifice.

Detailed Description

Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are easily implemented by those having ordinary skill in the art to which the present invention pertains, however, the present invention may be implemented in various forms, and thus, the present invention is not limited to the embodiments described below, and in addition, components not connected to the present invention will be omitted from the drawings for more clear description of the present invention.

As shown in fig. 1, a damper includes: the device comprises an outer cylinder 1, a piston rod 2, an inner cylinder 3, an adjusting mechanism 4, a transmission mechanism 5, a locking mechanism 6 and an oil storage cavity 7;

the outer cylinder 1 is formed by connecting a first cylinder body 11 and a second cylinder body 12 end to end, a piston rod 2, an inner cylinder 3, an adjusting mechanism 4, a transmission mechanism 5 and an oil storage cavity 7 are arranged in the first cylinder body 11, and a locking mechanism 6 is arranged in the second cylinder body 12;

the inner cylinder 3 is arranged in the middle of the first cylinder body 11, the baffles 31 are respectively arranged on two sides of the inner cylinder 3, one end of each baffle 31 is connected with the inner wall of the first cylinder body 11, the other end of each baffle is connected with the outer wall of the inner cylinder 3, so that the inner cylinder 3 is fixed, the first cylinder body 11 is divided into an upper space and a lower space, the first damping hole 32 and the second damping hole 33 are arranged at two ends of the inner cylinder 3, as shown in fig. 4A and B, the first damping hole 32 and the second damping hole 33 are ninety-degree strip-shaped holes, and the first damping hole 32 and the second damping hole 33 are arranged in a staggered manner, namely, staggered up and down and staggered left and right;

one end of the piston rod 2 penetrates through the first cylinder body 11 and the oil seal I13 and extends into the inner cylinder 3, the extending end of the piston rod 2 is provided with the piston 21, the piston 21 is initially positioned in the middle of the inner cylinder 3, two ends of the inner part of the inner cylinder 3 are respectively provided with the limiting parts 34, the limiting parts 34 limit the maximum moving distance of the piston 21 and prevent the piston 21 from blocking the damping holes I32 and II 33, the piston rod 2 is provided with the spring I22, and the spring I22 drives the piston rod 2 to automatically reset after being compressed;

as shown in fig. 2, the adjustment mechanism 4 includes: the damping device comprises a connecting plate 41, a rotating plate 42 and adjusting plates 43, wherein the connecting plate 41 is annular, the outer wall of the connecting plate 41 is fixed with the inner wall of the first cylinder body 11, as shown in fig. 5, a first fluid hole 41-1 and a second fluid hole 41-2 are respectively arranged above and below one side of the connecting plate 41, the opening area of the first fluid hole 41-1 and the second fluid hole 41-2 is larger than that of the first damping hole 32 and that of the second damping hole 33, as shown in fig. 6, the rotating plate 42 is nested in the connecting plate 41, one side wall surface of the rotating plate 42 is rotatably connected with the end part of the inner cylinder 3, a first circular groove 42-1 is arranged at the axis of the other side wall surface of the rotating plate 42, the two adjusting plates 43 are two, the two adjusting plates 43 are ninety-degree arc plates, the length of the adjusting plates 43 is the same as that of the inner cylinder 3, one end of the two adjusting plates 43 are fixed with the rotating plate 42, the two adjusting plates 43 are respectively arranged in the upper and lower space of the first cylinder body 11 and are attached to the inner cylinder 3, the two adjusting plates 43 are initially arranged at one side of the first damping hole 32 and the second damping hole 33, and the two adjusting plates are used for controlling the size of the damping hole 33, so as to control the damping force of the damping hole 33;

the transmission mechanism 5 is located at one side of the rotating plate 42, where the first circular groove 42-1 is formed, as shown in fig. 7-8, the transmission mechanism 5 includes: the cylinder comprises a shell 51, a rotating shaft 52, blades 53, a blocking plate 54, a sealing bearing 55, a second oil seal 56, a first shaft 57, a second shaft 58, a second spring 59 and a third spring 50, wherein one end of the shell 51 is an open surface, the open surface of the shell 51 is fixed with a connecting plate 41, a first cylinder 11 is communicated with the shell 51 through a first liquid flow hole 41-1 and a second liquid flow hole 41-2, the shaft center of one side wall surface of the shell 51 is provided with the sealing bearing 55, an inner ring of the sealing bearing 55 is fixed with the second oil seal 56, the second oil seal 56 is provided with a second circular groove, the second circular groove is opposite to the first circular groove 42-1, two ends of the rotating shaft 52 are nested in the first circular groove 42-1, initially one end of the rotating shaft 52 is attached to the wall surface of the first circular groove, the other end of the rotating shaft 52 is at a certain distance from the wall surface of the first circular groove 42-1, a third spring 50 is arranged at a distance between the other end of the rotating shaft 52 and the wall surface of the first circular groove 42-1, the vane 53 is arranged on the rotating shaft 52 in a sliding manner, two side wall surfaces of the vane 53 are attached to the shell 51, the blocking plate 54 is horizontally arranged in the shell 51, one end of the blocking plate 54 is fixed on the inner wall of the shell 51, the other end of the blocking plate is attached to the rotating shaft 52, the purpose is that damping fluid flows in the shell 51 along one direction, namely the damping fluid flows clockwise or anticlockwise, the diameter of the first shaft 57 is larger than that of the second shaft 58, a groove which is used for matching the diameters of the first shaft 57 and the second shaft 58 is arranged in the rotating shaft 52, one end of the first shaft 57 penetrates through the axis of the second oil seal 56 and extends into the rotating shaft 52, the other end of the first shaft is positioned in the second cylinder 12, a position, in which the first shaft 57 is positioned in the second cylinder 12, is provided with a limiting ring 57-1 and a butting plate 57-2, a certain distance is reserved between the limiting ring 57-1 and the abutting plate 57-2, a friction part is arranged between the limiting ring 57-1 and the abutting plate 57-2, the abutting plate 57-2 is in a circular truncated cone shape, a second spring 59 is arranged between the abutting plate 57-2 and the first cylinder 11, two ends of the second spring 59 are connected with the abutting plate 57-2 and the first cylinder 11, the elastic force of the second spring 59 is greater than that of the third spring 50, a rectangular opening is formed in the position, located in the rotating shaft 52, of the first shaft 57 along the axis, the position of the second shaft 58 is rectangular, one end of the second shaft 58 is nested into the rectangular opening of the first shaft 57, and the other end of the second shaft is inserted into the first circular groove 42-1 to be fixed with the rotating plate 42;

the lock mechanism 6 is provided on the second cylinder 12, and as shown in fig. 9 to 10, the lock mechanism 6 includes: the screw 61, the nut 62, the locking block 63 and the limiting plate 64 are fixed on the arc-shaped wall surface of the second cylinder 12, the screw 61 is engaged in the nut 62, the screw 61 forms a ninety-angle with the first shaft 57, one end of the screw 61, which faces the first shaft 57, is rotatably connected with the locking block 63, one surface of the locking block 63, which faces the first shaft 57, is provided with a circular arc-shaped friction plate 63-1, two side wall surfaces of the locking block 63 are attached to the limiting plate 64, the initial locking block 63 downwardly abuts against the slope surface of the limiting ring 57-1 to drive the first shaft 57 to move to one side, the second spring 59 is stretched, and the rear friction plate 63-1 abuts against the friction part of the first shaft 57, so that the first shaft 57 locks the second shaft 58, the rotating plate 42 and the adjusting plate 43;

one end of the oil storage cavity 7 is communicated with the inside of the first cylinder body 11, the other end of the oil storage cavity is provided with an air hole 71, and a piston head 72 is arranged inside the oil storage cavity 7.

The working principle of the invention is as follows:

when the damping force needs to be adjusted, the screw 61 is firstly screwed, namely the locking block 63 is separated from the first shaft 57, as shown in fig. 10, the second spring 59 is reset, the first shaft 57 is driven to further extend inwards the rotating shaft 52, so that the rotating shaft 52 is driven to further extend towards the first circular groove 42-1 to compress the third spring 50, and therefore, the friction force which is bidirectional to the rotating shaft 52 and the rotating plate 42 is provided through the compressed third spring 50, namely, the rotating shaft 52 rotates to drive the rotating plate 42 to rotate.

The piston rod 2 is compressed, the piston 21 pushes the damping fluid in the inner cylinder 3 to sequentially flow through the second damping hole 33 and the second fluid flow hole 41-2 into the shell 51 to push the vane 53 to rotate, as shown in fig. 13A, the vane 53 rotates to push the damping fluid to sequentially flow through the first fluid flow hole 41-1 and the first damping hole 32 and enter the inner cylinder 3, the rotating shaft 52 drives the two adjusting plates 43 to rotate through the rotating plate 42 in the rotating process of the vane 53, when the piston 21 moves to a dead point, the first damping hole 32 and the second damping hole 33 are the largest openings, namely the smallest damping force, the damping value is adjusted to be the largest, and then the damping force is gradually increased, as the piston rod 2 gradually enters the inner cylinder 3, the inner space in the inner cylinder 3 is reduced, so that the flow rate of the damping fluid of the second damping hole 33 is large, the flow rate of the damping fluid of the first damping hole 32 is small, the redundant damping fluid enters the oil storage cavity 7, and the damping fluid pushes the piston head 72 to discharge the air in the oil storage cavity 7.

The piston rod 2 is reset and stretched through the first spring 22, the piston 21 pushes damping fluid in the inner cylinder 3 to sequentially flow through the first damping hole 32 and the first flow hole 41-1 to enter the shell 51 to push the blades 53 to rotate in the opposite direction, as shown in fig. 13B, the blades 53 rotate to push the damping fluid to sequentially flow through the second flow hole 41-2 and the second damping hole 33 to enter the inner cylinder 3, in the rotating process of the blades 53, the rotating shaft 52 drives the two adjusting plates 43 to rotate through the rotating plate 42 to gradually cover the first damping hole 32 and the second damping hole 33, so that the stretching speed of the piston rod 2 is gradually reduced, the stretching speed of the piston rod 2 is detected, when the required damping force is adjusted, the screw 61 is twisted again to enable the locking block 63 to lock the first shaft 57 again, wherein when the piston rod 2 is reset through stretching, the maximum resistance is obtained at this time.

The other mode can be converted, namely the damping force is gradually increased when the piston rod 2 is compressed, the screw 61 is directly twisted, the locking block 63 is separated from the first shaft 57, and therefore in the reciprocating movement process of the piston 21, the two adjusting plates 43 gradually cover the first damping holes 32 and the second damping holes 33 and open the first damping holes 32 and the second damping holes 33, so that the damping force is gradually increased when the piston rod 2 is compressed.

Claims

1. A damper, comprising: the oil storage cylinder comprises an outer cylinder (1), a piston rod (2), an inner cylinder (3), an adjusting mechanism (4), a transmission mechanism (5), a locking mechanism (6) and an oil storage cavity (7), wherein the outer cylinder (1) is formed by connecting a first cylinder body (11) and a second cylinder body (12) end to end; the method is characterized in that: the inner cylinder (3) is arranged in the first cylinder body (11), two sides of the inner cylinder (3) are respectively provided with a baffle (31), two ends of the inner cylinder (3) are provided with a first damping hole (32) and a second damping hole (33), and the first damping hole (32) and the second damping hole (33) are arranged in a staggered mode;

the adjusting mechanism (4) comprises: the damping cylinder comprises a connecting plate (41), a rotating plate (42) and adjusting plates (43), wherein the connecting plate (41) is annular, the connecting plate (41) is fixed in a first cylinder body (11), a first liquid flowing hole (41-1) and a second liquid flowing hole (41-2) are respectively formed in the upper side and the lower side of one side of the connecting plate (41), the rotating plate (42) is embedded in the connecting plate (41), one side wall surface of the rotating plate (42) is rotatably connected with the end part of an inner cylinder (3), a first circular groove (42-1) is formed in the axis of the other side wall surface of the rotating plate (42), the number of the adjusting plates (43) is two, the length of each adjusting plate (43) is the same as that of the inner cylinder (3), one end of each adjusting plate (43) is fixed with the corresponding rotating plate (42), the two adjusting plates (43) are attached to the inner cylinder (3), and the two adjusting plates (43) are initially and are respectively located on one side of a first damping hole (32) and a second damping hole (33);

drive mechanism (5) are located one side that circular recess (42-1) were seted up in commentaries on classics board (42), drive mechanism (5) include: the sealing structure comprises a shell (51), a rotating shaft (52), blades (53), a blocking plate (54), a sealing bearing (55), a second oil seal (56), a first shaft (57), a second shaft (58), a second spring (59) and a third spring (50), wherein one end of the shell (51) is an open surface, the open surface of the shell (51) is fixed with a connecting plate (41), the sealing bearing (55) is arranged at the shaft center of one side wall surface of the shell (51), the second oil seal (56) is fixed on an inner ring of the sealing bearing (55), the second oil seal (56) is provided with a second circular groove, two ends of the rotating shaft (52) are embedded in the second circular groove and the first circular groove (42-1), the third spring (50) is arranged at the distance between the end part of the rotating shaft (52) and the wall surface of the first circular groove (42-1), the blades (53) are arranged on the rotating shaft (52) in a sliding mode, one end of the blocking plate (54) fixes the inner wall of the shell (51), the other end of the rotating shaft (52) is attached to the rotating shaft (57), the diameter of the first shaft (57) is larger than that of the second shaft (58), the first shaft (52), the rotating shaft (57), the first shaft (57) and the second shaft (57) are arranged in a second shaft (57), and extend into a cylinder (12) extending into the second groove (57), the position that axle one (57) is located second cylinder (12) sets up spacing ring (57-1) and supports plywood (57-2), spacing ring (57-1) and support certain interval between plywood (57-2), be the friction portion between spacing ring (57-1) and the plywood (57-2), it is round platform shape to support plywood (57-2), it is provided with spring two (59) to support between plywood (57-2) and first cylinder body (11), the elasticity of spring two (59) is greater than spring three (50), the position that axle one (57) is located pivot (52) has seted up the rectangle mouth along the axle center, axle two (58) position is the rectangle, the nested rectangle mouth that advances axle one (57) of axle two (58) one end, the other end inserts in circular recess one (42-1) and is fixed mutually with commentaries on classics board (42).

2. A damper as claimed in claim 1 wherein: piston rod (2) one end runs through first cylinder body (11) and oil blanket (13) and extends into in inner cylinder (3), the extension end of piston rod (2) sets up piston (21), piston (21) are the middle part that is located inner cylinder (3) initially, the inside both ends of inner cylinder (3) are provided with spacing portion (34) respectively, spacing portion (34) are with the maximum displacement distance of restriction piston (21), prevent piston (21) shutoff damping hole one (32) and damping hole two (33), be provided with spring one (22) on piston rod (2), spring one (22) drive piston rod (2) compression back automatic re-setting.

3. A damper as claimed in claim 1, wherein: the locking mechanism (6) is provided on the second cylinder (12), the locking mechanism (6) including: screw rod (61), nut (62), locking block (63), limiting plate (64), nut (62) are fixed on the arc wall of second cylinder body (12), screw rod (61) meshing is in nut (62), screw rod (61) are ninety contained angles with axle (57), screw rod (61) rotate towards the one end of axle (57) and connect locking block (63), locking block (63) are provided with back arc friction disc (63-1) towards the one side of axle (57), locking block (63) both sides wall surface laminating limiting plate (64), wherein friction disc (63-1) and the friction part butt of axle (57) close.

4. A damper as claimed in claim 1, wherein: one end of the oil storage cavity (7) is communicated with the inside of the first cylinder body (11), the other end of the oil storage cavity is provided with an air hole (71), and a piston head (72) is arranged inside the oil storage cavity (7).