Adjusting mechanism for height valve

Abstract

The invention relates to the technical field of adjusting rods for height valves, and provides an adjusting mechanism for a height valve, a first connecting assembly comprises a first ball seat, one end of a connecting rod is connected with the first ball seat, and the first ball seat is used for being hinged to a ball head of the height valve; the second connecting assembly comprises a second ball seat and a second nut, a second clamping groove is formed in the peripheral wall of the second nut around the axis of the second nut, the second nut is sleeved with the second ball seat, the second ball seat is provided with a second clamping head, the second clamping head is inserted into the second clamping groove, the second ball seat is provided with a first abutting part, and the second nut is provided with a second abutting part. The first abutting part and the second abutting part can abut against each other in the rotating direction of the second nut, the other end of the connecting rod is inserted into the second ball seat and is in threaded connection with the second nut, and the second ball seat is used for being hinged to a ball head of a fixing pin. In this way, operation is convenient, the adjusting length is easy to control, and then the assembly efficiency of a whole vehicle line and the maintenance experience of customers are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of regulating rods for height valves, and in particular to a regulating mechanism for height valves. Background Art

[0002] To ensure the normal posture of the cab, the cab suspension height valve adjustment rod of domestic and foreign vehicles is equipped with a telescopic length adjustment function. When the vehicle is assembled, due to the accumulation of systematic tolerances of the upper and lower parts, the cab suspension air spring is not at the theoretical design height. It is necessary to adjust the length of the height valve adjustment rod to control the height of the air spring and ensure the normal posture of the cab. The height valve adjustment rod is adjusted after the vehicle is assembled. There are other parts around the height valve, and the operating space is limited. The existing height valve adjustment method is difficult to adjust or its length adjustment is not easy to control. The length adjustment either requires the use of tools and requires sufficient operating space, or it is easy to adjust but the adjustment length is not easy to control. This affects the assembly efficiency of the entire vehicle online and the customer maintenance experience.

[0003] Therefore, there is an urgent need for an adjustment mechanism for a height valve to solve the above technical problems. Summary of the Invention

[0004] The purpose of the present invention is to provide an adjustment mechanism for a height valve, which is easy to operate and the adjustment length is easy to control, thereby improving the assembly efficiency on the vehicle line and the customer's maintenance experience.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] Adjustment mechanism for a height valve, comprising:

[0007] Connecting rod;

[0008] A first connecting assembly includes a first ball seat, one end of the connecting rod is connected to the first ball seat, and the first ball seat is used for hinged connection with the ball head of the height valve;

[0009] The second connecting component includes a second ball seat and a second nut. The second nut is provided with a second groove on the outer peripheral wall around its axis. The second ball seat is sleeved on the outside of the second nut. The second ball seat is provided with a second clamping head. The second clamping head is inserted into the second groove. The second ball seat is provided with a first abutting portion. The second nut is provided with a second abutting portion. The first abutting portion and the second abutting portion can abut along the rotation direction of the second nut. The other end of the connecting rod is inserted into the second ball seat and is threadedly connected to the second nut. The second ball seat is used to be hinged with the ball head of the fixing pin.

[0010] As a preferred technical solution of the above-mentioned adjustment mechanism for the height valve, the above-mentioned first abutting portion and / or the above-mentioned second abutting portion can undergo elastic deformation, so that the above-mentioned second nut can rotate relative to the above-mentioned second ball seat.

[0011] As an optimal technical solution for the above-mentioned adjustment mechanism for the height valve, in the cross section perpendicular to the axis of the above-mentioned second nut, the outer contour of the above-mentioned second nut is a second regular polygon, the above-mentioned second ball seat is provided with a second plug-in hole, the inner contour of the above-mentioned second plug-in hole is the above-mentioned second regular polygon, and the above-mentioned second nut is inserted into the above-mentioned second plug-in hole.

[0012] As an optimal technical solution for the above-mentioned adjustment mechanism for the height valve, the above-mentioned connecting rod includes a first rod portion and a second rod portion, the above-mentioned first rod portion is fixedly connected to the above-mentioned second rod portion, the above-mentioned first rod portion is provided with an external thread, the above-mentioned second nut is threadedly connected to the above-mentioned first rod portion, the cross-sectional shape of the above-mentioned second rod portion is a third regular polygon, the above-mentioned second ball seat is provided with a second through hole, the cross-sectional shape of the above-mentioned second through hole is the above-mentioned third regular polygon, and the above-mentioned second ball seat is sleeved on the above-mentioned second rod portion.

[0013] As a preferred technical solution for the above-mentioned adjustment mechanism for the height valve, the above-mentioned second ball seat is provided with an avoidance groove perpendicular to the axial direction of the above-mentioned connecting rod, and the above-mentioned second nut is at least partially located in the above-mentioned avoidance groove.

[0014] As a preferred technical solution of the above-mentioned adjustment mechanism for the height valve, the above-mentioned connecting rod is inserted into the above-mentioned first ball seat and fixedly connected to the above-mentioned first ball seat.

[0015] As a preferred technical solution of the above-mentioned adjustment mechanism for the height valve, the above-mentioned first connecting assembly also includes a first nut, the above-mentioned first nut is fixed to the above-mentioned first ball seat, and the above-mentioned connecting rod is threadedly connected to the above-mentioned first nut.

[0016] As a preferred technical solution of the above-mentioned adjustment mechanism for the height valve, the above-mentioned first nut and the above-mentioned first ball seat are integrally formed.

[0017] As a preferred technical solution of the above-mentioned adjustment mechanism for the height valve, the above-mentioned first connecting assembly also includes a first nut, and the above-mentioned first nut is rotatably connected to the above-mentioned first ball seat.

[0018] As an optimal technical solution for the above-mentioned adjustment mechanism for the height valve, the above-mentioned connecting rod also includes a third rod portion and a fourth rod portion, the above-mentioned third rod portion and the above-mentioned fourth rod portion are fixedly connected, the above-mentioned third rod portion is provided with an external thread, the above-mentioned first nut is threadedly connected to the above-mentioned third rod portion, the cross-sectional shape of the above-mentioned fourth rod portion is a fourth regular polygon, the above-mentioned first ball seat is provided with a first through hole, the cross-sectional shape of the above-mentioned first through hole is the above-mentioned fourth regular polygon, and the above-mentioned first ball seat is sleeved on the above-mentioned fourth rod portion.

[0019] Beneficial effects of the present invention:

[0020] The connecting rod is a straight rod-shaped structure, which is used to connect the first connecting component and the second connecting component and plays a guiding role. The first ball seat of the first connecting component includes a first connecting part A and a first connecting part B. The first connecting part A is fixed to the first connecting part B. The first connecting part A is used to be hinged with the ball head of the height valve, and the first connecting part B is used to connect with one end of the connecting rod. The second nut of the second connecting component includes a second connecting part A, a second connecting part B and a second connecting part C. The second connecting part A, the second connecting part B and the second connecting part C are fixedly connected in sequence and coaxially provided with through holes. The second connecting part A is provided with an internal thread. The second connecting part A is used to be threadedly connected to the connecting rod. The outer diameter of the second connecting part B is smaller than the outer diameter of the second connecting part A and smaller than the outer diameter of the second connecting part C, thus forming a second groove. The second groove is connected end to end around the axis of the second nut to form a circular groove structure. The second ball seat of the second connecting assembly includes a third connecting part A, a third connecting part B and a third connecting part C. The third connecting part A, the third connecting part B and the third connecting part C are fixedly connected, wherein the third connecting part A is used to hinge with the fixed pin ball, the third connecting part B and the third connecting part C are sleeved on the outside of the connecting rod, and the third connecting part C is sleeved on the outside of the second nut, and a second clamp is convexly provided on the inner side of the third connecting part C, and the second clamp can be inserted into the second clamping groove, and the second clamping groove can respectively abut with the second clamping head on the opposite side walls in the axial direction of the connecting rod to limit the relative movement of the second ball seat and the second nut in the axial direction of the connecting rod, and the third connecting part C is also provided with a first abutment part, which can abut with the second abutment part provided on the second nut in the rotation direction of the second nut to limit the rotation of the second nut relative to the second ball seat.

[0021] The second nut and the second ball seat include a first state and a second state. When in the first state, the first abutting portion abuts the second abutting portion, and the second nut and the second ball seat are locked. Due to the relative fixation of the fixing pin, the second nut cannot rotate relative to the connecting rod, thereby locking the relative position of the second ball seat and the connecting rod. When in the second state, the first abutting portion and the second abutting portion no longer abut in the rotation direction of the second nut, or the first abutting portion and the second abutting portion can temporarily break the abutment relationship, allowing the second nut to rotate relative to the connecting rod. Since the second ball seat and the second nut are rotatably connected, the two can rotate relative to each other to maintain the orientation of the fixing pin unchanged, and the second ball seat can move along the axial direction of the connecting rod to adjust the spacing between the fixing pin and the height valve in the axial direction of the connecting rod.

[0022] This makes operation easier and the length adjustment easier to control, thereby improving assembly efficiency on the vehicle line and improving customer maintenance experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in describing the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without any creative work.

[0024] Figure 1 1 is a schematic structural diagram of an adjustment mechanism for a height valve provided in an embodiment of the present invention;

[0025] Figure 2 is a schematic structural diagram of a second ball seat provided by an embodiment of the present invention;

[0026] Figure 3 is a schematic structural diagram of a second nut provided in an embodiment of the present invention;

[0027] Figure 4 This is an assembly diagram of an adjustment mechanism for a height valve, a height valve, and a fixing pin provided in an embodiment of the present invention.

[0028] In the picture:

[0029] 1. Adjustment mechanism; 2. Height valve; 3. Fixing pin;

[0030] 100, connecting rod;

[0031] 200, first connecting assembly; 210, first ball seat; 211, first connecting portion A; 212, first connecting portion B; 220, first nut;

[0032] 300, second connecting assembly; 310, second ball seat; 311, third connecting part A; 312, third connecting part B; 313, third connecting part C; 3131, second clamp; 3132, first abutting part; 314, second plug-in hole; 315, avoidance groove; 320, second nut; 321, second connecting part A; 322, second connecting part B; 323, second connecting part C; 324, second clamping groove; 325, second abutting part. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0034] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0035] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0036] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0037] like Figures 1 to 4 As shown, the present invention provides an adjustment mechanism for a height valve, including a connecting rod 100 , a first connecting assembly 200 and a second connecting assembly 300 . Among them, the first connecting component 200 includes a first ball seat 210, one end of the connecting rod 100 is connected to the first ball seat 210, and the first ball seat 210 is used to be hinged with the ball head of the height valve 2; the second connecting component 300 includes a second ball seat 310 and a second nut 320, the second nut 320 is provided with a second clamping groove 324 on the outer peripheral wall around its axis, the second ball seat 310 is sleeved outside the second nut 320, the second ball seat 310 is provided with a second clamping head 3131, the second clamping head 3131 is inserted into the second clamping groove 324, the second ball seat 310 is provided with a first abutting portion 3132, and the second nut 320 is provided with a second abutting portion 325, the first abutting portion 3132 and the second abutting portion 325 can abut along the rotation direction of the second nut 320, the other end of the connecting rod 100 is inserted into the second ball seat 310 and threadedly connected to the second nut 320, and the second ball seat 310 is used to be hinged with the ball head of the fixing pin 3.

[0038] For example, the connecting rod 100 is a straight rod-shaped structure that connects the first connecting assembly 200 and the second connecting assembly 300 and serves as a guide. The first ball seat 210 of the first connecting assembly 200 includes a first connecting portion A211 and a first connecting portion B212. The first connecting portion A211 is fixed to the first connecting portion B212. The first connecting portion A211 is used for articulation with the ball head of the height valve 2. The first connecting portion B212 is used to connect to one end of the connecting rod 100. The second nut 320 of the second connecting assembly 300 includes a second connecting part A321, a second connecting part B322 and a second connecting part C323. The second connecting part A321, the second connecting part B322 and the second connecting part C323 are fixedly connected in sequence and coaxially provided with through holes. An internal thread is provided in the second connecting part A321. The second connecting part A321 is used for threaded connection with the connecting rod 100. The outer diameter of the second connecting part B322 is smaller than the outer diameter of the second connecting part A321 and smaller than the outer diameter of the second connecting part C323, thereby forming a second slot 324. The second slot 324 is connected end to end around the axis of the second nut 320 to form a circular groove structure. The second ball seat 310 of the second connecting assembly 300 includes a third connecting portion A311, a third connecting portion B312 and a third connecting portion C313, wherein the third connecting portion A311, the third connecting portion B312 and the third connecting portion C313 are fixedly connected, wherein the third connecting portion A311 is used for ball hinge connection with the fixing pin 3, the third connecting portion B312 and the third connecting portion C313 are sleeved outside the connecting rod 100, and the third connecting portion C313 is sleeved outside the second nut 320, and the inner side of the third connecting portion C313 is convexly provided with a second clamp 3131, and the second clamp 3131 can be inserted into the second slot 324, and the two opposite side walls of the second slot 324 in the axial direction of the connecting rod 100 can respectively abut against the second clamping head 3131 to limit the relative movement of the second ball seat 310 and the second nut 320 in the axial direction of the connecting rod 100. The third connecting part C313 is also provided with a first abutting part 3132, and the first abutting part 3132 can abut against the second abutting part 325 provided on the second nut 320 in the rotation direction of the second nut 320 to limit the rotation of the second nut 320 relative to the second ball seat 310.

[0039] The second nut 320 and the second ball seat 310 have a first state and a second state. In the first state, the first abutting portion 3132 abuts the second abutting portion 325, locking the second nut 320 and the second ball seat 310. Due to the relative fixation of the fixing pin 3, the second nut 320 cannot rotate relative to the connecting rod 100, thereby locking the relative position of the second ball seat 310 and the connecting rod 100. In the second state, the first abutting portion 3132 and the second abutting portion 325 no longer abut in the rotational direction of the second nut 320, or the first abutting portion 3132 and the second abutting portion 325 can temporarily break the abutment relationship, allowing the second nut 320 to rotate relative to the connecting rod 100. Since the second ball seat 310 and the second nut 320 are rotatably connected, they can rotate relative to each other to maintain the orientation of the fixing pin 3 unchanged, while the second ball seat 310 can move along the axial direction of the connecting rod 100 to adjust the distance between the fixing pin 3 and the height valve 2 on the connecting rod 100.

[0040] This makes operation easier and the length adjustment easier to control, thereby improving assembly efficiency on the vehicle line and improving customer maintenance experience.

[0041] Optionally, the first abutting portion 3132 and / or the second abutting portion 325 can be elastically deformed, so that the second nut 320 can rotate relative to the second ball seat 310 .

[0042] For example, the first abutting portion 3132 and / or the second abutting portion 325 are made of rubber. When the user applies a force of F 实际 When the force is applied to drive the second nut 320 to rotate relative to the connecting rod 100, the second ball seat 310 cannot rotate relative to the connecting rod 100 because it is hinged to the fixing pin 3. 实际 >F 阈 , F 阈 The first abutting portion 3132 and / or the second abutting portion 325 can then undergo elastic deformation, thereby providing clearance for the rotation of the second nut 320 and the second ball seat 310. The second nut 320 can then rotate about the connecting rod 100. Since the second nut 320 and the connecting rod 100 are threadedly connected, screwing the second nut 320 can cause the second ball seat 310 to move relative to the connecting rod 100 along the axial direction of the connecting rod 100. This technical solution allows the first abutting portion 3132 and the second abutting portion 325 to temporarily break the abutment relationship.

[0043] Exemplarily, the second clamping head 3131 can also move axially relative to the second nut 320 along the connecting rod 100 in the second clamping groove 324, that is, the second nut 320 and the second ball seat 310 include a first position and a second position in the axial direction of the connecting rod 100. When in the first position, the first abutting portion 3132 and the second abutting portion 325 at least partially overlap in the radial direction of the connecting rod 100, and can abut in the rotation direction of the second nut 320; when in the second position, the first abutting portion 3132 and the second abutting portion 325 are arranged at an axial interval on the connecting rod 100, that is, there is no overlapping area in the radial direction of the connecting rod 100, and when the second nut 320 rotates relative to the connecting rod 100, the first abutting portion 3132 and the second abutting portion 325 no longer come into contact.

[0044] Optionally, in a cross section perpendicular to the axis of the second nut 320 , the outer contour of the second nut 320 is a second regular polygon, the second ball seat 310 is provided with a second plug hole 314 , the inner contour of the second plug hole 314 is a second regular polygon, and the second nut 320 is inserted into the second plug hole 314 .

[0045] In this configuration, the first abutment portion 3132 is the inner peripheral wall of the second insertion hole 314, and the second abutment portion 325 is the outer peripheral wall of the second nut 320. By limiting the cross-sectional shape, the rotation between the second nut 320 and the second ball seat 310 is suppressed.

[0046] It should be noted that the radius of the circumscribed circle of the second nut 320 is greater than the radius of the inscribed circle of the second ball seat 310 .

[0047] Optionally, the connecting rod 100 includes a first rod portion and a second rod portion, the first rod portion is fixedly connected to the second rod portion, the first rod portion is provided with an external thread, the second nut 320 is threadedly connected to the first rod portion, the cross-sectional shape of the second rod portion is a third regular polygon, the second ball seat 310 has a second through hole, the cross-sectional shape of the second through hole is a third regular polygon, and the second ball seat 310 is sleeved on the second rod portion.

[0048] In this arrangement, the second rod portion of the connecting rod 100 is inserted into the second through hole of the second ball seat 310. Due to the limitation of the cross-sectional shape, the connecting rod 100 and the second nut 320 cannot rotate relative to each other around the axis of the connecting rod 100. The connecting rod 100 and the second nut 320 can only move along the axial direction of the connecting rod 100 to achieve a guiding effect. When the second nut 320 rotates relative to the first rod portion, the second nut 320 can move along the axial direction of the connecting rod 100. The second nut 320 is rotatably connected to the second ball seat 310. The second nut 320 can rotate relative to the second ball seat 310 and can move along the axial direction of the connecting rod 100 with the second ball seat 310.

[0049] It should be noted that the radius of the inscribed circle of the inner peripheral wall of the second through hole is smaller than the radius of the circumscribed circle of the second rod portion.

[0050] Optionally, the second ball seat 310 is provided with an avoidance groove 315 perpendicular to the axial direction of the connecting rod 100 , and the second nut 320 is at least partially located in the avoidance groove 315 .

[0051] Exemplarily, the avoidance groove 315 passes through the side wall of the second ball seat 310 in a direction perpendicular to the axial direction of the connecting rod 100. After the second nut 320 is assembled with the second ball seat 310, part of the second nut 320 can be exposed from the avoidance groove 315 so that the user can screw the second nut 320.

[0052] Optionally, the connecting rod 100 is inserted into the first ball seat 210 and fixedly connected to the first ball seat 210. Exemplarily, the connecting rod 100 and the first ball seat 210 are connected by plugging to increase the contact area between the two, thereby maintaining relative stability between the two. The connecting rod 100 and the first ball seat 210 are fixed by a pin, and the pin is inserted into the connecting rod 100 and the first ball seat 210 in a direction perpendicular to the axial direction of the connecting rod 100 to limit the relative displacement of the connecting rod 100 and the first ball seat 210 and maintain the connection between the two.

[0053] Optionally, the first connecting assembly 200 further includes a first nut 220 , which is fixed to the first ball seat 210 , and the connecting rod 100 is threadedly connected to the first nut 220 .

[0054] Illustratively, the first nut 220 is fixed to the first ball seat 210 by welding, and the connecting rod 100 is threadedly connected to the first nut 220 . In this way, the difficulty of processing the first ball seat 210 can be reduced.

[0055] Optionally, the first nut 220 is integrally formed with the first ball seat 210. This arrangement makes the connection between the first nut 220 and the first ball seat 210 more reliable and reduces the number of assembly steps.

[0056] Optionally, the first connecting assembly 200 further includes a first nut 220, which is rotatably connected to the first ball seat 210. Exemplarily, a first clamping groove is provided on the outer peripheral wall of the first nut 220, and the first clamping groove is provided around the axis of the first nut 220 to form an annular groove structure, and the depth direction of the first clamping groove is perpendicular to the axial direction of the first nut 220. A first clamping head is protruded from the inner side wall of the first ball seat 210, and the first nut 220 is sleeved on the outside of the first ball seat 210. At this time, the first clamping head is inserted into the first clamping groove and can rotate relative to the first nut 220 in the first clamping groove. The opposite side walls of the first clamping groove in the axial direction of the first nut 220 can respectively abut against the opposite side walls of the first clamping head, thereby limiting the relative movement between the first nut 220 and the first ball seat 210 in the axial direction of the connecting rod 100.

[0057] Furthermore, the first nut 220 is divided into a first nut part A and a first nut part B with one of its diameters as a dividing line. The first nut part A and the first nut part B are detachably connected so that when the first nut 220 is assembled with the first ball seat 210, the first clamping head can be inserted into the first clamping groove along the depth direction of the first clamping groove.

[0058] Optionally, the connecting rod 100 also includes a third rod portion and a fourth rod portion, the third rod portion and the fourth rod portion are fixedly connected, the third rod portion is provided with an external thread, the first nut 220 is threadedly connected to the third rod portion, the cross-sectional shape of the fourth rod portion is a fourth regular polygon, the first ball seat 210 is provided with a first through hole, the cross-sectional shape of the first through hole is a fourth regular polygon, and the first ball seat 210 is sleeved on the fourth rod portion.

[0059] In this way, the fourth rod portion of the connecting rod 100 is inserted into the first through hole of the first ball seat 210. Due to the limitation of the cross-sectional shape, the connecting rod 100 and the first nut 220 cannot rotate relative to each other around the axis of the connecting rod 100. The connecting rod 100 and the first nut 220 can only move along the axial direction of the connecting rod 100 to achieve a guiding effect. When the first nut 220 rotates relative to the third rod portion, the first nut 220 can move along the axial direction of the connecting rod 100. The first nut 220 is rotatably connected to the first ball seat 210. The first nut 220 can rotate relative to the first ball seat 210 and can move along the axial direction of the connecting rod 100 with the first ball seat 210.

[0060] It should be noted that the radius of the inscribed circle of the inner peripheral wall of the first through hole is smaller than the radius of the circumscribed circle of the fourth rod portion.

[0061] Illustratively, along the axial direction of the connecting rod 100 , the first rod portion, the second rod portion, the third rod portion, and the fourth rod portion are fixedly connected.

[0062] It should be noted that the arrangement order of the first rod portion, the second rod portion, the third rod portion and the fourth rod portion along the connecting rod 100 is not limited. That is, the following situations are included:

[0063] In the first case, the first rod portion, the second rod portion, the third rod portion and the fourth rod portion are fixed in sequence along the axis of the connecting rod 100 .

[0064] In the second case, the second rod portion, the first rod portion, the third rod portion and the fourth stem portion are fixed in sequence along the axis of the connecting rod 100 .

[0065] In case three, the first rod portion, the second rod portion, the fourth rod portion and the third rod portion are fixed in sequence along the axis of the connecting rod 100 .

[0066] In case four, the second rod portion, the first rod portion, the fourth rod portion and the third rod portion are fixed in sequence along the axis of the connecting rod 100 .

[0067] Furthermore, the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are possible for those skilled in the art without departing from the scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. An adjustment mechanism for a height valve, characterized in that: include: Connecting rod (100); A first connecting assembly (200) comprises a first ball seat (210), one end of the connecting rod (100) is connected to the first ball seat (210), and the first ball seat (210) is used for articulating with the ball head of the height valve (2); The second connecting assembly (300) includes a second ball seat (310) and a second nut (320). The second nut (320) is provided with a second groove (324) on the outer peripheral wall around its axis. The second ball seat (310) is sleeved on the outside of the second nut (320). The second ball seat (310) is provided with a second clamping head (3131). The second clamping head (3131) is inserted into the second groove (324). The second ball seat (310) is provided with a first abutting portion (3132). The second nut (320) is provided with a second abutting portion (325). The first abutting portion (3132) and the second abutting portion (325) can abut along the rotation direction of the second nut (320). The other end of the connecting rod (100) is inserted into the second ball seat (310) and is threadedly connected to the second nut (320). The second ball seat (310) is used to be hinged with the ball head of the fixing pin (3).

2. The adjustment mechanism for a height valve according to claim 1, characterized in that: The first abutting portion (3132) and / or the second abutting portion (325) can undergo elastic deformation, so that the second nut (320) can rotate relative to the second ball seat (310).

3. The adjustment mechanism for a height valve according to claim 2, characterized in that: In a cross section perpendicular to the axis of the second nut (320), the outer contour of the second nut (320) is a second regular polygon, the second ball seat (310) is provided with a second plug hole (314), the inner contour of the second plug hole (314) is the second regular polygon, and the second nut (320) is inserted into the second plug hole (314).

4. The adjustment mechanism for a height valve according to claim 1, characterized in that: The connecting rod (100) includes a first rod portion and a second rod portion, the first rod portion is fixedly connected to the second rod portion, the first rod portion is provided with an external thread, the second nut (320) is threadedly connected to the first rod portion, the cross-sectional shape of the second rod portion is a third regular polygon, the second ball seat (310) is provided with a second through hole, the cross-sectional shape of the second through hole is the third regular polygon, and the second ball seat (310) is sleeved on the second rod portion.

5. The adjustment mechanism for a height valve according to claim 1, characterized in that: The second ball seat (310) is provided with an avoidance groove (315) in an axial direction perpendicular to the connecting rod (100), and the second nut (320) is at least partially located in the avoidance groove (315).

6. The adjustment mechanism for a height valve according to claim 1, characterized in that: The connecting rod (100) is inserted into the first ball seat (210) and fixedly connected to the first ball seat (210).

7. The adjustment mechanism for a height valve according to claim 1, characterized in that: The first connecting assembly (200) further includes a first nut (220), wherein the first nut (220) is fixed to the first ball seat (210), and the connecting rod (100) is threadedly connected to the first nut (220).

8. The adjustment mechanism for a height valve according to claim 7, characterized in that: The first nut (220) and the first ball seat (210) are integrally formed.

9. The adjustment mechanism for a height valve according to claim 1, characterized in that: The first connecting assembly (200) further includes a first nut (220), wherein the first nut (220) is rotatably connected to the first ball seat (210).

10. The adjustment mechanism for a height valve according to claim 9, characterized in that: The connecting rod (100) further includes a third rod portion and a fourth rod portion, wherein the third rod portion and the fourth rod portion are fixedly connected, the third rod portion is provided with an external thread, the first nut (220) is threadedly connected to the third rod portion, the cross-sectional shape of the fourth rod portion is a fourth regular polygon, the first ball seat (210) is provided with a first through hole, the cross-sectional shape of the first through hole is the fourth regular polygon, and the first ball seat (210) is sleeved on the fourth rod portion.

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