Anti-drag guide rod

Abstract

The utility model discloses a resistance reduction type guide rod, which comprises a core rod, balls and a ball sleeve, the outer wall of the core rod is provided with a plurality of ball grooves which are arranged in a surrounding way along the length direction, the balls are arranged in the ball grooves one by one, and the ball sleeve is positioned on the periphery of the core rod and is provided with ball holes which can be used for exposing parts of the balls respectively. According to the utility model, the core rod with the plurality of ball grooves and the ball sleeve with the plurality of ball holes are combined to respectively limit the plurality of balls on the inner side and the outer side in an in-situ rolling manner, so that the sliding friction between the guide rod and the lock rod can be replaced by rolling friction by utilizing the convex balls; the friction force between the guide rod and the lock rod is greatly reduced, so that the guide rod is utilized to ensure that the lock rod can move along a specified path, and meanwhile, the obstruction of the guide rod to the lock rod is reduced.

Description

[Technical field]

[0001] The utility model relates to the technical field of guide rods, in particular to the technical field of drag-reducing guide rods. [Background technology]

[0002] A diesel engine is an engine that burns diesel to release energy, such as the 12-cylinder water-cooled diesel engine disclosed in the invention with publication number CN106224094A and a diesel engine disclosed in the invention with publication number CN116324141B. Diesel engines have the characteristics of large torque, high thermal efficiency and good economic performance, and are usually used in mobile equipment or transportation tools (such as vans, trucks, forklifts, cranes, well repair equipment, drilling rigs, excavators, portable generators and welding trucks), emergency vehicles (such as fire trucks and ambulances) and small processing equipment (such as lawn mowers, blowers, generators, compressors, welders and pumps).

[0003] Common valves on the market usually include a valve plate that can regulate the cutting and opening of the diesel engine pipeline and a locking mechanism (built-in lock head and lock rod) that can lock the position of the valve plate. During operation, the rotatable lock rod is usually reset by a torsion spring. In addition, in order to ensure that the lock rod moves on the specified path, the factory often adds a guide rod to guide the lock rod. Existing guide rods are usually coated with a smooth coating on the surface to reduce the friction between the lock rod and the lock rod, thereby reducing the obstruction to the lock rod. However, the smooth coating is prone to peeling off gradually over time. [Contents of the utility model]

[0004] The utility model aims to solve the problems in the prior art and proposes a drag-reducing guide rod, which can reduce obstacles to the locking rod while ensuring that the locking rod can move along a specified path.

[0005] To achieve the above-mentioned purpose, the utility model proposes a drag-reducing guide rod, including a core rod, balls and a bead sleeve, wherein the outer wall of the core rod is provided with a plurality of surrounding bead grooves along the length direction, and a plurality of the balls are placed one by one in each bead groove, and the bead sleeve is located on the periphery of the core rod and is provided with bead holes for partially exposing each ball.

[0006] Preferably, each of the bead grooves is hemispherical.

[0007] Preferably, the bead sleeve is composed of a plurality of arc plates, each of which surrounds the core rod via each ball and is bounded by positioning sleeves located at both ends of the core rod.

[0008] Preferably, the bead sleeve is composed of 2 to 4 arc plates which can be spliced ​​together into a cylindrical shape.

[0009] Preferably, the two positioning sleeves are respectively arranged outside the core rod in the form of interference sleeves.

[0010] Preferably, the inner walls of the two positioning sleeves are respectively provided with elastic rubber pads.

[0011] Preferably, both ends of each arc plate are provided with an inner recess, and the two sets of positioning sleeves and elastic rubber pads are restrained with bead sleeves at the corresponding inner recesses, and the surfaces of the two positioning sleeves are flush with the surfaces of the parts of each arc plate without the inner recess.

[0012] Preferably, the surface of each of the balls is provided with a smooth coating.

[0013] Beneficial effects of the utility model:

[0014] 1) By using a core rod with multiple bead grooves and a bead sleeve with multiple bead holes in combination, multiple balls are respectively limited in situ by rolling on the inner and outer sides, so that the sliding friction between the guide rod and the lock rod can be replaced by rolling friction by each protruding ball, which greatly reduces the friction between the guide rod and the lock rod, thereby reducing the obstruction of the guide rod to the lock rod while ensuring that the lock rod can move along a specified path by using the guide rod;

[0015] 2) By using several arc plates that can be spliced ​​together into a cylindrical shape as ball sleeves, and using positioning sleeves located at both ends of the core rod to constrain the spliced ​​arc plates, it is convenient to remove and replace the balls;

[0016] 3) By installing elastic rubber pads on the inner walls of the two positioning sleeves, the tightening effect of the two positioning sleeves on the bead sleeves at both ends can be effectively improved.

[0017] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0018] Figure 1 It is a cross-sectional view of the drag-reducing guide rod of the utility model;

[0019] Figure 2 It is a cross-sectional view of the core rod of the drag-reducing guide rod of the utility model;

[0020] Figure 3 This is a front view of the arc plate of the drag-reducing guide rod of the utility model;

[0021] Figure 4 It is a top view of the arc plate of the drag-reducing guide rod of the utility model;

[0022] Figure 5 It is a cross-sectional view of the arc plate of the drag-reducing guide rod of the utility model;

[0023] Figure 6The utility model is a schematic diagram of assembling a positioning sleeve and an elastic rubber pad of a drag-reducing guide rod.

[0024] In the figure: 161-core rod, 1611-bead groove, 162-ball, 163-bead sleeve, 1631-bead hole, 1632-inner recess, 164-positioning sleeve, 165-elastic rubber pad. [Specific implementation method]

[0025] See also Figures 1 to 6 The utility model of the drag-reducing guide rod comprises a core rod 161, a ball 162 and a bead sleeve 163. The outer wall of the core rod 161 is provided with a plurality of surrounding bead grooves 1611 along the length direction. The plurality of balls 162 are placed in each bead groove 1611 one by one. The bead sleeve 163 is located on the periphery of the core rod 161 and is provided with bead holes 1631 for partially exposing each ball 162.

[0026] Each of the bead grooves 1611 is hemispherical.

[0027] The bead sleeve 163 is composed of a plurality of arc plates, each of which surrounds the core rod 161 through each ball 162 and is bound by the positioning sleeves 164 located at both ends of the core rod 161.

[0028] The bead sleeve 163 is composed of 2 to 4 arc plates that can be spliced ​​together into a cylindrical shape.

[0029] The two positioning sleeves 164 are respectively arranged outside the core rod 161 in an interference fit manner.

[0030] The inner walls of the two positioning sleeves 164 are respectively provided with elastic rubber pads 165 .

[0031] Both ends of each arc plate are provided with an inner recess 1632, and the two sets of positioning sleeves 164 and elastic rubber pads 165 are restrained by the bead sleeves 163 at the corresponding inner recess 1632, and the surfaces of the two positioning sleeves 164 are flush with the surfaces of the parts of each arc plate without the inner recess 1632.

[0032] The surface of each of the balls 162 is provided with a smooth coating.

[0033] Working process of this utility model:

[0034] During assembly, firstly, the balls 162 are respectively installed in each ball groove 1611. Then, a plurality of arc plates are respectively arranged on the periphery of the core rod 161 and the arc plates are spliced ​​together to form a cylindrical shape (i.e., the bead sleeve 163). Finally, the positioning sleeves 164 with elastic rubber pads 165 are respectively put on the two ends of the bead sleeve 163.

[0035] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. Drag reduction guide rod, characterized in that: The invention comprises a core rod (161), a ball (162) and a bead sleeve (163); the outer wall of the core rod (161) is provided with a plurality of bead grooves (1611) arranged around the core rod along the length direction; a plurality of the balls (162) are placed in each of the bead grooves (1611); the bead sleeve (163) is located on the periphery of the core rod (161) and is provided with bead holes (1631) for partially exposing each of the balls (162).

2. The drag-reducing guide rod according to claim 1, characterized in that: Each of the bead grooves (1611) is hemispherical.

3. The drag-reducing guide rod according to claim 1, characterized in that: The bead sleeve (163) is composed of a plurality of arc plates, each of which surrounds the core rod (161) through each ball (162) and is bound by positioning sleeves (164) located at both ends of the core rod (161).

4. The drag-reducing guide rod according to claim 3, characterized in that: The bead sleeve (163) is composed of 2 to 4 arc plates which can be spliced ​​together into a cylindrical shape.

5. The drag-reducing guide rod according to claim 3, characterized in that: The two positioning sleeves (164) are respectively arranged outside the core rod (161) in an interference sleeve manner.

6. The drag-reducing guide rod according to claim 5, characterized in that: The inner walls of the two positioning sleeves (164) are also respectively provided with elastic rubber pads (165).

7. The drag-reducing guide rod according to claim 6, characterized in that: Both ends of each arc plate are provided with an inner recess (1632), and the two groups of positioning sleeves (164) and elastic rubber pads (165) are used to restrain the bead sleeves (163) at the corresponding inner recess (1632), and the surfaces of the two positioning sleeves (164) are flush with the surfaces of the parts of each arc plate without the inner recess (1632).

8. The drag-reducing guide rod according to any one of claims 1 to 7, characterized in that: The surface of each of the rolling balls (162) is provided with a smooth coating.

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