CN217437500U - Constant force device of variable stiffness spring-mechanism coupling - Google Patents
Constant force device of variable stiffness spring-mechanism coupling Download PDFInfo
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- CN217437500U CN217437500U CN202220953447.0U CN202220953447U CN217437500U CN 217437500 U CN217437500 U CN 217437500U CN 202220953447 U CN202220953447 U CN 202220953447U CN 217437500 U CN217437500 U CN 217437500U
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Abstract
The utility model discloses a constant force device coupled by a variable stiffness spring-mechanism, which comprises a frame, a triangular support rod, a rotating support system, a composite support system, a connecting rod, a pressure spring, an adjusting nut and a pulley; the frame is arranged on the ground, the triangular support rod is arranged on the frame through a rotating support system, the compression spring rod is arranged on the frame through a composite support system, one end of the compression spring rod is connected with the triangular support rod through a connecting rod, and the other end of the compression spring rod is a free end; the pressure spring is sleeved on the pressure spring rod, one end of the pressure spring props against the composite support system, and the other end of the pressure spring is arranged at the free end of the pressure spring rod through an adjusting nut and a pressure spring rigidity adjusting cylinder; the pulley is arranged on the triangular support rod. The advantages are that: the mechanism has simple structure, convenient installation and no need of complex gear train and cam system; the length size parameters of the adjusting mechanism or the rigidity of the spring is changed by a mechanical device, so that the requirements of different constant force values can be met, and meanwhile, the variable constant force is achieved by fine adjusting the nut.
Description
Technical Field
The utility model relates to a suspend in midair equipment technical field specifically is a constant force device of variable stiffness spring-mechanism coupling.
Background
The constant force mechanism is used for generating constant pulling force and dragging an object to move. The constant force mechanism has wide application in the machining and manufacturing fields, such as a constant force spring support and hanger for supporting, a paper feeding mechanism in a printing machine and a surface grinding processing link, and various current constant force mechanisms have the characteristics, but the problems of complicated structure, poor constancy or effective short forming are generally existed.
Chinese utility model patent cn201410303471.x discloses a constant force gallows, and this constant force gallows has the advantage that anticorrosion, application range are wide, but this constant force mechanism structure is complicated, and the device constant force is fixed, can not obtain changeable constant force.
The chinese invention patent CN201510696904.7 discloses a constant force mechanism, which mainly uses torsion springs between large and small motors to transfer torque in a transitional manner, and provides a constant force structure with a lower elastic coefficient, thereby achieving the requirements of large load capacity and high accuracy at the same time.
Chinese patent CN105487563B discloses an adjustable constant force mechanism, which can obtain variable constant force but has a complex structure, high precision required for processing and installation, and a small working stroke. At present, a constant force mechanism with simple structure, large working stroke and adjustable constant force is not available.
SUMMERY OF THE UTILITY MODEL
The utility model provides a constant force device coupled by a variable stiffness spring-mechanism, which can overcome the defects of the existing constant force mechanism and does not need complex gear and cam structures; and meanwhile, the mechanism can realize constant force output without calibration and debugging again only by meeting the requirement of position during installation, the length size parameter of the mechanism is adjusted or the rigidity of the spring is changed to meet the requirement of different constant force numerical values, installation and processing errors can be further compensated by adjusting the nut, and the constant force effect is good.
The specific technical scheme is that the variable-stiffness spring-mechanism coupled constant force device comprises a rack, a triangular support rod, a rotary support system, a composite support system, a connecting rod, a pressure spring, an adjusting nut and a pulley; the frame is arranged on the ground, the triangular support rod is arranged on the frame through a rotating support system, the compression spring rod is arranged on the frame through a composite support system, one end of the compression spring rod is connected with the triangular support rod through a connecting rod, and the other end of the compression spring rod is a free end; the pressure spring is sleeved on the pressure spring rod, one end of the pressure spring props against the composite support system, and the other end of the pressure spring is arranged at the free end of the pressure spring rod through an adjusting nut and a pressure spring rigidity adjusting cylinder; the pulley is arranged on the triangular support rod.
Preferably, the rotary support system comprises a rotary sleeve system, a rotary shaft, a rotary support first deep groove ball bearing, a rotary support second deep groove ball bearing, a rotary support circular nut with a locking groove, a rotary support first bearing end cover and a rotary support second bearing end cover; the rotating shaft is circumferentially fixed by a rotating shaft sleeve system; the axis of rotation is connected through the first deep groove ball bearing of rotation support and rotation support second deep groove ball bearing with the triangular support pole, and the triangular support pole revolutes the axis of rotation and rotates, the axis of rotation is the step shaft, and the shoulder realizes the inner circle axial fixity to the first deep groove ball bearing of rotation support, rotation support second deep groove ball bearing with rotation support area locking groove round nut, and the outer lane axial fixity to the first deep groove ball bearing of rotation support, rotation support second deep groove ball bearing is realized to the first bearing end cover of rotation support and rotation support second bearing end cover.
It is right the utility model discloses technical scheme's preferred, the axle sleeve system is by rotating support lower shaft sleeve, rotating support first upper shaft sleeve and rotating support second upper shaft sleeve and constitute, and the axle sleeve is "concave" style of calligraphy under the rotating support, and the axle sleeve lower extreme links firmly with the frame under the rotating support, rotates the first upper shaft sleeve of support and rotates the upper end that the axle sleeve pressed under the rotating support respectively on the support second, and is fixed with the axis of rotation.
It is right the utility model discloses technical scheme's preferred, compound support system includes compound axle sleeve system, the first deep groove ball bearing of compound support, compound support second deep groove ball bearing, the first locking groove circle nut of taking of compound support, compound support second area locking groove circle nut, smooth axle sleeve and sliding bearing, compound axle sleeve system sets up in the frame, smooth axle sleeve both ends are through the first deep groove ball bearing of compound support, compound support second deep groove ball bearing realizes being connected with compound axle sleeve system, the first locking groove circle nut of taking of compound support and compound support second area locking groove circle nut are to the first deep groove ball bearing of compound support, compound support second deep groove ball bearing realizes axial fixity, sliding bearing inserts in the smooth axle sleeve and the cooperation installation.
It is right to the utility model discloses technical scheme's preferred, the axle sleeve is gone up to compound axle sleeve system including compound support lower axle sleeve, compound support first upper axle sleeve and compound support second, and compound support lower axle sleeve is "concave" style of calligraphy, and compound support lower axle sleeve lower extreme links firmly with the frame, and the axle sleeve is pressed respectively in the upper end of compound support lower axle sleeve, fixed smooth axle sleeve on the first upper axle sleeve of compound support and the compound support second.
It is right the utility model discloses technical scheme's preferred, pressure spring pole one end is the external screw thread for internal thread one end, and pressure spring pole internal thread one end links firmly with connecting rod external screw thread one end, and pressure spring pole external screw thread one end is connected with the adjusting nut cooperation, and the empty cover of pressure spring rigidity adjustment section of thick bamboo is on the pressure spring pole, pressure spring rigidity adjustment section of thick bamboo lower extreme installation adjusting nut, installation pressure spring between pressure spring rigidity adjustment section of thick bamboo and the sliding bearing.
Preferably, the triangular support rod is in a right-angled triangle structure, and the two acute-angle corresponding through holes are respectively a first through hole and a second through hole; an adjusting threaded hole is formed in the right-angle end, an adjusting threaded rod is connected with the adjusting threaded hole in a threaded mode, and the free end of the adjusting threaded rod is a U-shaped hinged seat; one end of the connecting rod is hinged with the U-shaped hinged seat, the second through hole of the triangular supporting rod is connected with the pulley, and the first through hole of the triangular supporting rod is connected with the rotating support system.
It is right to the utility model discloses technical scheme's preferred, the last working face of frame is the ladder face of height, and the setting of rotation support system is on the low working face of frame, and compound support system sets up on the high working face of frame.
In the technical scheme of the utility model, the first deep groove ball bearing of the rotating support, the second deep groove ball bearing of the rotating support, the first deep groove ball bearing of the composite support and the second deep groove ball bearing of the composite support are all commercially available deep groove ball bearings and are directly purchased; in the present embodiment, the difference in name is made for the purpose of describing the embodiment.
Compared with the prior art, the utility model, its beneficial effect is:
1. the utility model discloses a become constant force device of rigidity spring-mechanism coupling, simple structure, simple to operate do not need complicated train and cam system.
2. The utility model discloses a constant force device of variable stiffness spring-mechanism coupling through changing pressure spring rigidity, perhaps adjustment mechanism length size parameter satisfies different constant force numerical value requirements, reaches variable constant force through the fine setting nut simultaneously.
3. The utility model discloses a constant force device of variable stiffness spring-mechanism coupling, the mounted position is confirmed, can realize the tensile constant force output of pulley end.
Drawings
Fig. 1 is a schematic structural diagram of a variable stiffness spring-mechanism coupled constant force device according to the present invention;
fig. 2 is a schematic structural view of a triangular support bar of the constant force device coupled by the variable stiffness spring-mechanism according to the present invention;
fig. 3 is a schematic structural diagram of a rotating support system of the constant force device coupled by the variable stiffness spring-mechanism according to the present invention;
fig. 4 is an exploded view of the rotary support system of the variable rate spring-mechanism coupled constant force device of the present invention;
fig. 5 is a schematic structural diagram of a composite support system of a variable stiffness spring-mechanism coupled constant force device according to the present invention;
fig. 6 is an exploded view of the composite support system of the variable rate spring-mechanism coupled constant force device of the present invention;
fig. 7 is a top view of the structure of the rotating support with locking groove round nut of the constant force device of the variable stiffness spring-mechanism coupling of the present invention;
fig. 8 is a front view of a rotary support with a locking groove round nut of the variable stiffness spring-mechanism coupled constant force device according to the present invention;
fig. 9 is a schematic structural view of a variable stiffness spring-mechanism coupled constant force device connecting rod according to the present invention;
fig. 10 is a schematic structural view of a variable stiffness spring-mechanism coupled constant force device sliding bush according to the present invention;
fig. 11 is a schematic structural diagram of a compressed spring stiffness adjustment cylinder of a constant force device coupled by a variable stiffness spring-mechanism according to the present invention;
the symbols in the drawings represent the meanings of 1: a support; 2: a triangular support bar; 3: a connecting rod; 4: a compression spring rod; 5: a pressure spring; 6: adjusting the nut; 7: a pulley; 8: a rotating shaft; 9: rotating a first deep groove ball bearing of the support; 10: rotating the support second deep groove ball bearing; 11: the rotary support is provided with a locking groove round nut; 12: rotating a first bearing end cover of the support; 13: rotating the second bearing end cap of the support; 14: rotating the lower shaft sleeve of the support; 15: rotating the first upper shaft sleeve of the support; 16: rotating the second upper shaft sleeve of the support; 17: a first deep groove ball bearing of the composite support; 18: a second deep groove ball bearing of the composite support; 19: the first round nut with a locking groove of the composite support; 20: the second round nut with a locking groove of the composite support; 21: a sliding shaft sleeve; 22: a slide bearing; 23: a composite support lower shaft sleeve; 24: a first upper shaft sleeve of the composite support; 25: a second upper shaft sleeve of the composite support; 201: adjusting the threaded hole; 2011: adjusting the threaded rod; 202: a first through hole of the triangular support rod; 203: a second through hole of the triangular support rod; 27: and a pressure spring rigidity adjusting cylinder.
Detailed Description
The technical solution of the present invention is explained in detail below, but the scope of protection of the present invention is not limited to the embodiments.
In order to make the present invention more comprehensible, the following description is further made with reference to the accompanying drawings 1 to 11.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Referring to fig. 1 to 10, the constant force device coupled by the variable stiffness spring-mechanism of the present embodiment includes a frame 1, a triangular support rod 2, a rotating support system, a composite support system, a connecting rod 3, a pressure spring rod 4, a pressure spring 5, an adjusting nut 6, a pressure spring stiffness adjusting cylinder 27, and a pulley 7.
As shown in fig. 1, a frame 1 is arranged on the ground, a triangular support rod 2 is arranged on the frame 1 through a rotary support system, a compression spring rod 4 is arranged on the frame 1 through a composite support system, one end of the compression spring rod 4 is connected with the triangular support rod 2 through a connecting rod 3, and the other end of the compression spring rod 4 is a free end; a pressure spring 5 is sleeved on the pressure spring rod 4, one end of the pressure spring 5 props against the composite support system, and the other end of the pressure spring 5 is arranged at the free end of the pressure spring rod 4 through an adjusting nut 6; the pulley 7 is arranged on the triangular support rod 2.
In this embodiment, the end of the compression spring rod 4 matched with the adjusting nut 6 is provided with scale marks, so that the adjustment amount of the compression spring 5 can be conveniently observed. The one end that connecting rod 3 and compression spring pole 4 are connected has the scale mark, conveniently observes connecting rod 3's installation volume, conveniently calculates the distance between connecting rod 3 and the compression spring pole 4.
As shown in FIG. 1, the upper working surface of the frame 1 is a high-low stepped surface, the rotary support system is arranged on the low working surface of the frame 1, and the composite support system is arranged on the high working surface of the frame 1.
As shown in fig. 1 and 6, one end of the compression spring rod 4 is an internal thread and the other end is an external thread, one end of the internal thread of the compression spring rod 4 is fixedly connected with one end of the external thread of the connecting rod 3, one end of the external thread of the compression spring rod 4 is connected with the adjusting nut 6 in a matching manner, the compression spring rigidity adjusting cylinder 27 is sleeved on the compression spring rod 4 in a hollow manner, the adjusting nut 6 is installed at the lower end of the compression spring rigidity adjusting cylinder 27, and the compression spring 5 is installed between the compression spring rigidity adjusting cylinder 27 and the sliding bearing 22.
As shown in fig. 11, trapezoidal thick teeth are spirally distributed outside the pressure spring stiffness adjusting cylinder 27, the upper end surface and the lower end surface of each spiral tooth are flat, the thread pitch of each spiral tooth is the same as that of the pressure spring, and the trapezoidal thick teeth can be screwed into the spring wire gaps of the pressure spring 5.
In this embodiment, as shown in fig. 9, the connecting rod 3 is preferably a hinged joint, a sleeve in the hinged joint is inserted by the rotating shaft 8 in the rotating support system, and the rod end of the hinged joint is in threaded connection with the compression spring rod 4. The connecting rod 3 is a standard commercially available part.
As shown in fig. 2, the triangular supporting rod 2 is a right triangle structure, and the two through holes corresponding to the acute angles are a first through hole 202 and a second through hole 203 respectively; an adjusting threaded hole 201 is formed in the right-angle end, an adjusting threaded rod 2011 is connected with the adjusting threaded hole 201 through internal threads, and the free end of the adjusting threaded rod 2011 is a U-shaped hinge seat; one end of the connecting rod 3 is hinged with the U-shaped hinge seat; the relative distance between the threaded rod 2011 and the triangular support rod 2 is adjusted, so that the position change of the U-shaped hinged seat can be realized. The second through hole 203 of the triangular support rod 2 is connected with the pulley 7, and the first through hole 202 of the triangular support rod 2 is connected with the rotating support system.
As shown in fig. 3 and 4, the rotating support system comprises a rotating sleeve system, a rotating shaft 8, a rotating support first deep groove ball bearing 9, a rotating support second deep groove ball bearing 10, a rotating support circular nut with a locking groove 11, a rotating support first bearing end cover 12 and a rotating support second bearing end cover 13; the rotating shaft 8 is circumferentially fixed by a rotating shaft sleeve system; rotation axis 8 is connected through the first deep groove ball bearing of rotation support 9 and rotation support second deep groove ball bearing 10 with triangular support bar 2, and triangular support bar 2 revolutes rotation axis 8 and rotates, rotation axis 8 is the step shaft, and the shoulder realizes the inner circle axial fixity to the first deep groove ball bearing of rotation support 9, rotation support second deep groove ball bearing 10 with rotation support area locking groove round nut 11, and rotation support first bearing end cover 12 and rotation support second bearing end cover 13 realize the outer lane axial fixity to the first deep groove ball bearing of rotation support 9, rotation support second deep groove ball bearing 10.
As shown in fig. 3 and 4, the rotating shaft sleeve system is composed of a rotating support lower shaft sleeve 14, a rotating support first upper shaft sleeve 15 and a rotating support second upper shaft sleeve 16, the rotating support lower shaft sleeve 14 is concave, the lower end of the rotating support lower shaft sleeve 14 is fixedly connected with the frame 1, and the rotating support first upper shaft sleeve 15 and the rotating support second upper shaft sleeve 16 are respectively pressed on the upper end of the rotating support lower shaft sleeve 14 to fix the rotating shaft 8.
As shown in fig. 5 and 6, the composite support system includes a composite shaft sleeve system, a first deep groove ball bearing 17 of the composite support, a second deep groove ball bearing 18 of the composite support, a first round nut with a locking groove 19 of the composite support, a second round nut with a locking groove 20 of the composite support, a sliding shaft sleeve 21 and a sliding bearing 22, and the composite shaft sleeve system is arranged on the frame 1; as shown in fig. 10, both ends of the sliding shaft sleeve 21 are connected with the composite shaft sleeve system through the composite support first deep groove ball bearing 17 and the composite support second deep groove ball bearing 18; the first composite support round nut with the locking groove 19 and the second composite support round nut with the locking groove 20 axially fix the first composite support deep groove ball bearing 17 and the second composite support deep groove ball bearing 18, and the sliding bearing 22 is inserted into the sliding shaft sleeve 21 and is installed in a matched mode.
As shown in fig. 5 and 6, the composite shaft sleeve system includes a composite support lower shaft sleeve 23, a composite support first upper shaft sleeve 24 and a composite support second upper shaft sleeve 25, the composite support lower shaft sleeve 23 is concave, the lower end of the composite support lower shaft sleeve 23 is fixedly connected with the frame 1, the composite support first upper shaft sleeve 24 and the composite support second upper shaft sleeve 25 are respectively pressed on the upper end of the composite support lower shaft sleeve 23 to fix the sliding shaft sleeve 21.
The constant force implementation and adjustment method of the constant force device coupled by the variable-stiffness spring-mechanism in the embodiment includes the following steps:
constant force output: setting the initial deformation of the pressure spring 5;
the initial deformation amount of the pressure spring 5 is equal to the distance between the center of the sliding shaft sleeve 21 and the rotation center of the U-shaped hinged seat on the adjusting threaded rod 2011, an acute angle is formed between the connection line of the rotation center of the rotating support system and the rotation center of the composite support system and the horizontal plane, and the acute angle is complementary with the acute angle corresponding to the first through hole 202 on the triangular support rod, so that the constant force output of the mechanism is realized.
For different constant force output requirements:
the end of the compression spring rod 4, which is matched with the adjusting nut 6, is provided with scale marks, the end of the connecting rod 3, which is connected with the compression spring rod 4, is provided with scale marks, the mechanism is finely adjusted through the adjusting nut 6 and the connecting rod 3, and the initial deformation amount of the compression spring 5 is changed through the adjustment of the adjusting nut 6; the position of the pressure spring rigidity adjusting cylinder 27 in the pressure spring 5 is changed in advance, so that the effective number of turns of the pressure spring 5 is changed, and the rigidity changing adjustment of the pressure spring is realized; the installation amount of connecting rod 3 changes, and the distance between connecting rod 3 and pressure spring pole 4 changes, when carrying out different constant force output.
The specific implementation mode is as follows:
taking the constant force mechanism as an example, a heavy object is suspended by a hoist through a sling, the sling bypasses a pulley 7, one end of the sling is connected with the heavy object, the other end of the sling is connected with the suspended hoist, the sling is used for winding and unwinding the sling, in the starting, accelerating, decelerating, stopping and other stages of the hoist, the sling drives the pulley 7 and the triangular support rod 2 to rotate around a rotating support system through a second through hole 202 of the triangular support rod 2, so as to drive the composite support system to rotate together with the connecting rod 3, on the other hand, the connecting rod 3 also makes linear motion at a sliding bearing 22 of the composite support system, so as to drive the pressure spring rod 4 to make linear motion, an adjusting nut 6 connected with the pressure spring rod 4 compresses a pressure spring 5 at the moment, and the tension of the sling end is constant through the deformation of the pressure spring 5.
The utility model discloses the part that does not relate to all is the same with prior art or can adopt prior art to realize.
As mentioned above, although the present invention has been shown and described with reference to certain preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A constant force device of variable stiffness spring-mechanism coupling is characterized by comprising a rack (1), a triangular support rod (2), a rotary support system, a composite support system, a connecting rod (3), a pressure spring rod (4), a pressure spring (5), an adjusting nut (6) and a pulley (7); the frame (1) is arranged on the ground, the triangular support rod (2) is arranged on the frame (1) through a rotary support system, the pressure spring rod (4) is arranged on the frame (1) through a composite support system, one end of the pressure spring rod (4) is connected with the triangular support rod (2) through a connecting rod (3), and the other end of the pressure spring rod (4) is a free end; a pressure spring (5) is sleeved on the pressure spring rod (4), one end of the pressure spring (5) props against the composite support system, and the other end of the pressure spring is arranged at the free end of the pressure spring rod (4) through an adjusting nut (6) and a pressure spring rigidity adjusting cylinder (27); the pulley (7) is arranged on the triangular support rod (2).
2. The variable rate spring-mechanism coupled constant force device of claim 1, wherein the rotating support system comprises a rotating sleeve system, a rotating shaft (8), a rotating support first deep groove ball bearing (9), a rotating support second deep groove ball bearing (10), a rotating support locking groove round nut (11), a rotating support first bearing end cap (12) and a rotating support second bearing end cap (13);
the rotating shaft (8) is circumferentially fixed by a rotating shaft sleeve system; rotation axis (8) are connected through rotating the first deep groove ball bearing of support (9) and rotating support second deep groove ball bearing (10) with triangular support pole (2), and triangular support pole (2) revolute rotation axis (8) and rotate, rotation axis (8) are the step shaft, and the axle shoulder realizes the inner circle axial fixity to rotating support first deep groove ball bearing (9), rotating support second deep groove ball bearing (10) with rotating support area locking groove round nut (11), and rotating support first bearing end cover (12) and rotating support second bearing end cover (13) realize the outer lane axial fixity to rotating support first deep groove ball bearing (9), rotating support second deep groove ball bearing (10).
3. The variable stiffness spring-mechanism coupled constant force device according to claim 2, wherein the rotating shaft sleeve system is composed of a rotating support lower shaft sleeve (14), a rotating support first upper shaft sleeve (15) and a rotating support second upper shaft sleeve (16), the rotating support lower shaft sleeve (14) is concave, the lower end of the rotating support lower shaft sleeve (14) is fixedly connected with the frame (1), and the rotating support first upper shaft sleeve (15) and the rotating support second upper shaft sleeve (16) are respectively pressed on the upper end of the rotating support lower shaft sleeve (14) to fix the rotating shaft (8).
4. The variable rate spring-mechanism coupled constant force device of claim 1, wherein the composite support system comprises a composite bushing system, a composite support first deep groove ball bearing (17), a composite support second deep groove ball bearing (18), a composite support first circular nut with locking groove (19), a composite support second circular nut with locking groove (20), a sliding bushing (21) and a sliding bearing (22),
the composite shaft sleeve system is arranged on the rack (1), the two ends of the sliding shaft sleeve (21) are connected with the composite shaft sleeve system through the composite support first deep groove ball bearing (17) and the composite support second deep groove ball bearing (18), the composite support first band locking groove round nut (19) and the composite support second band locking groove round nut (20) realize axial fixation on the composite support first deep groove ball bearing (17) and the composite support second deep groove ball bearing (18), and the sliding bearing (22) is inserted into the sliding shaft sleeve (21) and is installed in a matched mode.
5. The constant force device of the variable-stiffness spring-mechanism coupling according to claim 4, wherein the composite shaft sleeve system comprises a composite support lower shaft sleeve (23), a composite support first upper shaft sleeve (24) and a composite support second upper shaft sleeve (25), the composite support lower shaft sleeve (23) is concave, the lower end of the composite support lower shaft sleeve (23) is fixedly connected with the frame (1), and the composite support first upper shaft sleeve (24) and the composite support second upper shaft sleeve (25) are respectively pressed on the upper end of the composite support lower shaft sleeve (23) to fix the sliding shaft sleeve (21).
6. The constant force device of variable stiffness spring-mechanism coupling according to claim 4, wherein one end of the compression spring rod (4) is an internal thread and the other end is an external thread, the internal thread end of the compression spring rod (4) is fixedly connected with the external thread end of the connecting rod (3), the external thread end of the compression spring rod (4) is connected with the adjusting nut (6) in a matching manner, the compression spring stiffness adjusting cylinder (27) is sleeved on the compression spring rod (4) in a hollow manner, the adjusting nut (6) is installed at the lower end of the compression spring stiffness adjusting cylinder (27), and the compression spring (5) is installed between the compression spring stiffness adjusting cylinder (27) and the sliding bearing (22).
7. The constant force device of variable stiffness spring-mechanism coupling according to claim 1, wherein the triangular support bar (2) is a right triangle structure, and the two corresponding through holes with acute angles are a first through hole (202) and a second through hole (203); an adjusting threaded hole (201) is formed in the right-angle end, an adjusting threaded rod (2011) is connected with the adjusting threaded hole (201) in an internal thread mode, and the free end of the adjusting threaded rod (2011) is a U-shaped hinge seat; one end of the connecting rod (3) is hinged with the U-shaped hinged seat, a second through hole (203) of the triangular supporting rod (2) is connected with the pulley (7), and a first through hole (202) of the triangular supporting rod (2) is connected with the rotating support system.
8. The variable rate spring-mechanism coupled constant force device according to claim 1, wherein the upper working surface of the frame (1) is a high-low stepped surface, the rotary support system is arranged on the low working surface of the frame (1), and the composite support system is arranged on the high working surface of the frame (1).
9. The variable-stiffness spring-mechanism coupled constant force device as claimed in claim 1, wherein the external part of the pressure spring stiffness adjusting cylinder (27) is spirally distributed with trapezoidal coarse teeth, the upper and lower end faces of the helical teeth are flat, the pitch of the helical teeth is the same as that of the pressure spring (5), and the trapezoidal coarse teeth can be screwed into the spring wire gap of the pressure spring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220953447.0U CN217437500U (en) | 2022-04-24 | 2022-04-24 | Constant force device of variable stiffness spring-mechanism coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220953447.0U CN217437500U (en) | 2022-04-24 | 2022-04-24 | Constant force device of variable stiffness spring-mechanism coupling |
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| Publication Number | Publication Date |
|---|---|
| CN217437500U true CN217437500U (en) | 2022-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220953447.0U Active CN217437500U (en) | 2022-04-24 | 2022-04-24 | Constant force device of variable stiffness spring-mechanism coupling |
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| CN (1) | CN217437500U (en) |
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- 2022-04-24 CN CN202220953447.0U patent/CN217437500U/en active Active
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