Automatic dust removal device for radiator

Abstract

A radiator automatic dust removal device includes a fan blade, one end of the fan blade is provided with a torsion shaft, the torsion shaft is connected to a linkage member through a torsion mechanism, the torsion shaft radially passes through a limiter, a reset member is axially provided between the linkage member and the limiter, a tensioning member is provided on the linkage member, the tensioning member sequentially passes through the reset member and the limiter; or a tensioning member is provided on a fastener, the tensioning member sequentially passes through the linkage member, the reset member and the limiter, and extends from the front end of the limiter, the tensioning member has a limit structure, and the limit structure cooperates with the front end of the limiter. Compared with the prior art, the radiator automatic dust removal device provided by the present invention has the following advantages: simplified device structure, fast transmission speed, sensitive response, small space occupation, direct connection with a motor, easy repair and maintenance, etc.

Description

Technical Field

[0001] The invention relates to a radiator dust and impurity removal device for agricultural machinery, engineering machinery and the like, and in particular to an automatic radiator dust removal device. Background Art

[0002] At present, due to the fact that the working environment of agricultural machinery, engineering machinery, etc. is full of debris and dust, the radiator of the engine is easily blocked by debris or dust during operation, resulting in poor heat dissipation of the engine, and even damage to the engine and other components, affecting the normal operation of the engine or other components. The existing engine radiator dust removal device blows away the debris and dust attached to the radiator or other components by adjusting the direction of the fan, so that the radiator or other components can work normally without further damaging the engine. However, the existing agricultural engine radiator dust removal device either requires manual adjustment of the wind direction, or has a complex design structure and is not sensitive to response.

[0003] For example, the Chinese patent number 200820089739.4, entitled a utility model patent for a fan with adjustable wind direction for an engine, discloses the following content: a sleeve capable of fixing the blade shaft is provided on the fan fixing disc, two sleeves are provided in each group, one with a groove and the other without a groove, a shaft capable of inserting the sleeve is provided on the blade, a hole capable of locking the fan direction is provided at the top of the shaft, a locking pin is used to clamp the shaft to generate reverse wind, and to blow away debris on the engine water tank. However, the disadvantage of this structure is that the wind direction needs to be adjusted manually, which is not only of poor practicality, but also prone to safety accidents.

[0004] For example, the invention patent application with Chinese patent application number 201410653034.0, entitled "An automatic dust removal device for an agricultural engine water tank", discloses an automatic dust removal device for an agricultural engine water tank, including a fan blade, wherein the fan blade shaft is connected to a fixing ring, the fan shaft is fixedly connected to one end of an eccentric wheel, the other end of the eccentric wheel is connected to a center disk, the center disk abuts against a pressure plate, the pressure plate is connected to a shift fork, the shift fork is connected to a motor via a pull wire, the motor is connected to an automatic control box, the other side of the center disk is connected to a reset spring, and also includes a guide shaft, the guide shaft is fixed to the center disk, the fixing ring is provided with an axis hole, and the axis hole corresponds to the guide shaft. In the technical solution provided by the invention patent application, the motor pulls the fork through the pull wire, the fork drives the pressure plate to move axially, the pressure plate drives the center plate to move, the center plate drives the eccentric wheel to rotate, and the eccentric wheel drives the fan to rotate accordingly, so that the wind direction changes and blows away dust and garbage. When it needs to be reset, the motor rotates in the opposite direction, the pull wire is loosened, and under the action of the reset spring, the center plate is reset, and the fan blades are also reset accordingly. However, the design structure of the automatic dust removal device for the engine water tank is complicated and has too many transmission parts. For example, it is necessary to drive through multiple parts such as the pull wire, the fork, and the pressure plate to make the center plate produce axial displacement, thereby driving the fan blades to turn; moreover, the motor is connected to the fork through the pull wire; in addition, the above structure inevitably leads to the need for the pull wire, the fork and other parts to be set on the opposite side of the reset spring, thus causing the automatic dust removal device for the engine water tank to have a bloated structure and occupy too much space, which is not conducive to the rational allocation of resources. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides an automatic radiator dust removal device with a simplified structure, fast transmission speed, sensitive response and small space occupation. The device is directly connected to the motor and is easy to repair and maintain, such as replacing worn parts and adding lubricants.

[0006] The present invention provides an automatic dust removal device for a radiator, and its technical solution is as follows:

[0007] A radiator automatic dust removal device comprises a fan blade, one end of the fan blade is provided with a torsion shaft, the torsion shaft is connected to a linkage member through a torsion mechanism, the torsion shaft radially passes through a limiter, a reset member is axially provided between the linkage member and the limiter, a tensioning member is provided on the linkage member, the tensioning member sequentially passes through the reset member and the limiter; or the tensioning member is provided on a fastener, the tensioning member sequentially passes through the linkage member, the reset member and the limiter, and extends from the front end of the limiter, the tensioning member has a limit structure, and the limit structure cooperates with the front end of the limiter. The radiator automatic dust removal device is provided on one side of the radiator. Preferably, the tensioning member is a steel wire rope, the tensioning member is provided on the fastener, the tensioning member sequentially passes through the linkage member, the reset member and the limiter, and extends from the front end of the limiter, the fastener is a nut, and the structure is simple and occupies little space. Preferably, the torsion shaft is arranged at equal intervals along the circumference of the automatic dust removal device for the radiator, and the automatic dust removal device for the radiator has seven fan blades. The aforementioned structure enables the fan blade steering control end and the motor connection end to be located on both sides of the linkage, and the layout is more reasonable. In the actual processing process, the fan blade and the torsion shaft are two independent components, the fan blade and the torsion shaft are connected, and the fan blade and the torsion shaft can also be integrally formed into one component. When the automatic dust removal device for the radiator is in working state, the linkage may or may not rotate with it.

[0008] The automatic dust removal device for radiator provided by the present invention also includes the following auxiliary technical solutions:

[0009] The base of the torsion shaft cooperates with the outer periphery of the linkage member and the limit member to limit the radial movement of the fan blade. When the automatic dust removal device for the radiator is in working state, the above structure overcomes the centrifugal force and ensures the normal operation of the fan blade.

[0010] Wherein, the torsion mechanism comprises an eccentric tooth protrusion arranged on the base of the torsion shaft and a circumferential groove arranged on the outer periphery of the linkage member, and the eccentric tooth protrusion is located in the circumferential groove. Preferably, the groove is a band-shaped groove arranged along the outer periphery of the linkage member.

[0011] The torsion mechanism includes a gear disposed on the base of the torsion shaft and a rack disposed on the periphery of the linkage member, and the gear and the rack cooperate with each other. The base of the torsion shaft may also cooperate with the periphery of the linkage member and / or the rack, and with a limiter to limit the radial movement of the fan blades. Preferably, the rack is axially disposed.

[0012] Wherein, the torsion mechanism comprises a torsion spring, one end of which is fixed on the torsion shaft, and the other end of which is arranged on the linkage member.

[0013] Wherein, the limiting structure is formed by bending the tensioning member located at the front end of the limiting member.

[0014] Wherein, the automatic dust removal device for radiator further comprises a guide column, the tensioning member axially passes through the guide column, the guide column axially passes through the linkage member, the tensioning member cooperates with the guide column through a bearing, and the fastener abuts against one end of the guide column through a thrust bearing. Preferably, a guide column hole is provided on the linkage member, and the bearing is two in number, which are respectively provided on the inner walls at both ends of the guide column and contact the tensioning member.

[0015] The other end of the guide post is axially fixed to the tensioning member or the limiting member through an internal retaining spring, or the other end of the guide post is sleeved with a shaft sleeve, and the shaft sleeve is axially fixed to the tensioning member or the limiting member through an internal retaining spring. Preferably, the guide post is cylindrical, and the guide post passes through the guide post hole, and the guide post hole is circular.

[0016] Wherein, it further comprises a sleeve, which is arranged at the front end of the limiter, the tensioning member passes through the sleeve, the sleeve abuts against the limiter through a thrust bearing, or the sleeve abuts against the head cover through a thrust bearing, and the head cover abuts against the limiter. Preferably, the sleeve is in the shape of a round tube, the limiter structure formed by bending the tensioning member passes through the sleeve, and the sleeve has the same bending angle as the tensioning member, so as to limit the tensioning member.

[0017] The position-limiting member is provided with a through hole, and the torsion axis radially passes through the through hole. Preferably, the number of the through holes is seven.

[0018] The linkage member includes a linkage upper member and a linkage lower member. Preferably, the linkage upper member and the linkage lower member are fixedly connected by riveting, so that when parts need to be replaced or lubricant needs to be added, disassembly, maintenance and care are convenient.

[0019] Wherein, the automatic dust removal device for the radiator further comprises a protective sleeve, the torsion shaft radially passes through the protective sleeve, the protective sleeve radially passes through the through hole and cooperates with the stopper. Preferably, in order to reduce the inertial friction of the fan blades when turning and to protect the torsion shaft, a protective sleeve is sleeved on the torsion shaft, the protective sleeve is clamped at the through hole and abuts against the fan blades through an O-ring.

[0020] The fan blades and the torsion shaft are pinned to each other via a pin shaft, and / or the root of the fan blade has an internal thread, the torsion shaft is provided with an external thread, and the fan blade is threadedly connected to the torsion shaft. In the actual production process, the fan blades and the torsion shaft can be formed in one piece, or can be connected by, for example, welding, riveting, etc. Preferably, the fan blades and the torsion shaft are pinned to each other via a pin shaft, and are threadedly connected together. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the radiator automatic dust removal device.

[0022] Figure 2 This is a schematic diagram of the exploded structure of the radiator automatic dust removal device.

[0023] Figure 3 It is a side sectional view of the automatic dust removal device for the radiator.

[0024] Figure 4 This is a schematic diagram of the twisting mechanism structure in Example 1.

[0025] Figure 5 This is a schematic diagram of the twisting mechanism structure in Example 2.

[0026] Figure 6 This is a schematic diagram of the twisting mechanism structure in Example 3. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is specifically described below in conjunction with the accompanying drawings:

[0028] Example 1

[0029] See also Figures 1 to 4As shown, an automatic dust removal device for a radiator includes a fan blade 1, a torsion shaft 2 is arranged at one end of the fan blade 1, the torsion shaft 2 is connected to a linkage member 3 through a torsion mechanism, the torsion shaft 2 radially passes through a limiter 4, a reset member 5 is axially arranged between the linkage member 3 and the limiter 4, a tensioning member 6 is arranged on the linkage member 3, and the tensioning member 6 passes through the reset member 5 and the limiter 4 in sequence; or the tensioning member 6 is arranged on a fastener 7, and the tensioning member 6 passes through the linkage member 3, the reset member 5 and the limiter 4 in sequence, and extends from the front end of the limiter 4, and the tensioning member 6 has a limit structure, and the limit structure cooperates with the front end of the limiter 4. The automatic dust removal device for the radiator is arranged on one side of the radiator. The tensioning member 6 is a steel wire rope, and the tensioning member 6 is arranged on the fastener 7, and the tensioning member 6 passes through the linkage member 3, the reset member 5 and the limiter 4 in sequence, and extends from the front end of the limiter 4, and the fastener 7 is a nut, which has a simple structure and occupies a small space. The torsion shaft 2 is arranged at equal intervals along the circumference of the radiator automatic dust removal device, and the radiator automatic dust removal device has seven fan blades 1. The above structure enables the steering control end and the motor connection end of the fan blade 1 to be located on both sides of the linkage 3, and the layout is more reasonable. In the actual processing process, the fan blade 1 and the torsion shaft 2 are two independent components, the fan blade 1 and the torsion shaft 2 are connected, and the fan blade 1 and the torsion shaft 2 can also be integrally formed into one component. When the radiator automatic dust removal device is in working state, the linkage 3 can rotate or not.

[0030] See also Figure 2 , Figure 3 and Figure 4 As shown, the base of the torsion shaft 2 cooperates with the outer periphery of the linkage member 3 and the limit member 4 to limit the radial movement of the fan blade 1. When the radiator automatic dust removal device is in working state, the above structure overcomes the centrifugal force and ensures the normal operation of the fan blade 1.

[0031] See also Figure 2 , Figure 3 and Figure 4 As shown, the torsion mechanism includes an eccentric tooth protrusion 20 arranged on the base of the torsion shaft 2 and a circumferential groove 30 arranged on the outer periphery of the linkage member 3, and the eccentric tooth protrusion 20 is located in the circumferential groove 30. The groove 30 is a strip-shaped groove arranged along the outer periphery of the linkage member 3.

[0032] See also Figures 1 to 3 As shown, the limiting structure is formed by bending the tensioning member 6 located at the front end of the limiting member 4.

[0033] See also Figure 2 , Figure 3As shown, the radiator automatic dust removal device also includes a guide column 8, the tensioning member 6 axially passes through the guide column 8, the guide column 8 axially passes through the linkage member 3, the tensioning member 6 cooperates with the guide column 8 through a bearing 81, and the fastener 7 abuts against one end of the guide column 8 through a thrust bearing 71. The linkage member 3 is provided with a guide column hole, and the number of bearings 81 is two, which are respectively provided on the inner walls of the two ends of the guide column 8 and contact the tensioning member 6.

[0034] See also Figure 2 , Figure 3 As shown, the other end of the guide post 8 is axially fixed to the tensioning member 6 or the stopper 4 through an internal retaining spring 9, or the other end of the guide post 8 is sleeved with a shaft sleeve 80, and the shaft sleeve 80 is axially fixed to the tensioning member 6 or the stopper 4 through an internal retaining spring 9. The guide post 8 is cylindrical, and the guide post 8 passes through the guide post hole, which is circular.

[0035] See also Figures 1 to 3 As shown, the radiator automatic dust removal device also includes a sleeve 10, which is arranged at the front end of the limiter 4, the tension member 6 passes through the sleeve 10, and the sleeve 10 abuts against the limiter 4 through the thrust bearing 71, or the sleeve 10 abuts against the head cover 11 through the thrust bearing 71, and the head cover 11 abuts against the limiter 4. The sleeve 10 is in a round tube shape, and the limit structure formed by bending the tension member 6 passes through the sleeve 10. The sleeve 10 has the same bending angle as the tension member 6, and is used to limit the tension member 6.

[0036] See also Figures 1 to 3 As shown, the stopper 4 is provided with a through hole 41, and the torsion shaft 2 radially passes through the through hole 41. There are seven through holes 41.

[0037] See also Figure 2 , Figure 3 and Figure 4 As shown, the linkage member 3 includes a linkage upper member 31 and a linkage lower member 32. A circumferential groove 30 is formed between the linkage upper member 31 and the linkage lower member 32, and the linkage upper member 31 and the linkage lower member 32 are fixedly connected by riveting, which is convenient for disassembly, assembly, maintenance and care when parts need to be replaced or lubricant needs to be added.

[0038] See also Figures 1 to 3 As shown, the automatic dust removal device for the radiator also includes a protective sleeve 22, the torsion shaft 2 radially passes through the protective sleeve 22, the protective sleeve 22 radially passes through the through hole 41 and cooperates with the stopper 4, and the protective sleeve 22 abuts against the base of the torsion shaft 2 through the plane bearing 21. In order to reduce the inertial friction when the fan blade 1 turns and to protect the torsion shaft 2, the plane bearing 21 and the protective sleeve 22 are sequentially sleeved on the torsion shaft 2, and the protective sleeve 22 is clamped at the through hole 41 and abuts against the fan blade 1 through an O-ring.

[0039] See also Figures 1 to 4As shown, the fan blade 1 and the torsion shaft 2 are pinned to each other through the pin 101, and / or the root of the fan blade 1 has an internal thread, the torsion shaft 2 is provided with an external thread, and the fan blade 1 is threadedly connected to the torsion shaft 2. In the actual production process, the fan blade 1 and the torsion shaft 2 can be formed in one piece, or can be connected by welding, riveting, etc. The fan blade 1 and the torsion shaft 2 are pinned to each other through the pin 101 and are threadedly connected together.

[0040] The technical solution provided by the present invention has the following working principle: when the tensioning member is in a non-tensioned state, the linkage member does not undergo axial displacement, and the eccentric tooth protrusion is restricted in the circumferential groove on the outer periphery of the linkage member, which will not cause the rotation of the torsion shaft, and the wind direction generated by the rotation of the fan blades remains unchanged; when the tensioning member is in a tensioned state, the linkage member undergoes axial displacement, and the eccentric tooth protrusion is restricted in the circumferential groove on the outer periphery of the linkage member, and will also undergo displacement, thereby driving the torsion shaft to rotate, causing the fan blades to change the wind direction and blow away the dust or garbage accumulated on the radiator. When the fan blades need to change direction again, the tensioning member is released, and the reset member allows the linkage member to return to its original position, and the wind direction generated by the fan blades returns to its original direction.

[0041] Example 2

[0042] Except for the following contents, the other component structures are the same as those in Example 1:

[0043] See also Figures 1 to 3 , Figure 5 As shown, the torsion mechanism includes a gear 20' arranged on the base of the torsion shaft 2 and a rack 30' arranged on the periphery of the linkage member 3, and the gear 20' and the rack 30' are matched. The base of the torsion shaft 2 can also cooperate with the periphery of the linkage member 3 and / or the rack 30', and cooperate with the limiter 4 to limit the radial movement of the fan blade 1. The rack 30' is arranged axially.

[0044] See also Figures 1 to 3 , Figure 5 As shown, the automatic dust removal device for the radiator also includes a protective sleeve 22, the torsion shaft 2 radially passes through the protective sleeve 22, the protective sleeve 22 radially passes through the through hole 41 and cooperates with the stopper 4, and the protective sleeve 22 abuts against the gear 20' through the plane bearing 21. In order to reduce the inertial friction of the fan blade 1 when turning and to protect the torsion shaft 2, the plane bearing 21 and the protective sleeve 22 are sequentially sleeved on the torsion shaft 2, and the protective sleeve 22 is clamped at the through hole 41 and abuts against the fan blade 1 through an O-ring.

[0045] The technical solution provided by the present invention has the following working principle: when the tensioning member is in a non-tensioned state, the linkage member does not undergo axial displacement, the gear and the rack arranged on the linkage member do not produce relative displacement, the torsion shaft will not be caused to rotate, and the wind direction generated by the rotation of the fan blades remains unchanged; when the tensioning member is in a tensioned state, the linkage member undergoes axial displacement, and the rack subsequently undergoes axial displacement, driving the gear to rotate, thereby driving the torsion shaft to rotate, causing the fan blades to change the wind direction and blow away the dust or garbage accumulated on the radiator. When the fan blades need to change direction again, the tensioning member is released, and the reset member allows the linkage member to return to its original position, and the wind direction generated by the fan blades returns to its original direction.

[0046] Example 3

[0047] Except for the following contents, the other component structures are the same as those in Example 1:

[0048] See also Figures 1 to 3 , Figure 6 As shown, the torsion mechanism includes a torsion spring 20 ″, one end of the torsion spring 20 ″ is fixed on the torsion shaft 2 , and the other end of the torsion spring 20 ″ is arranged on the linkage member 3 .

[0049] See also Figures 1 to 3 , Figure 6 As shown, the radiator automatic dust removal device also includes a protective sleeve 22, the torsion shaft 2 radially passes through the protective sleeve 22, the protective sleeve 22 radially passes through the through hole 41 and cooperates with the stopper 4. In order to reduce the inertial friction of the fan blade 1 when turning and to protect the torsion shaft 2, the protective sleeve 22 is sleeved on the torsion shaft 2, the protective sleeve 22 is clamped at the through hole 41, and abuts against the fan blade 1 through an O-ring.

[0050] The technical solution provided by the present invention has the following working principle: when the tensioning member is in a non-tensioned state, the linkage member does not undergo axial displacement, the force on the torsion spring does not change, the torsion shaft does not rotate, and the wind direction generated by the rotation of the fan blades remains unchanged; when the tensioning member is in a tensioned state, the linkage member undergoes axial displacement, causing the force on the torsion spring to change, thereby driving the torsion shaft to rotate, causing the fan blades to change the wind direction and blow away the dust or garbage accumulated on the radiator. When the fan blades need to change direction again, the tensioning member is released, and the reset member allows the linkage member to return to its original position, and the wind direction generated by the fan blades returns to its original direction.

[0051] Finally, it should be pointed out that although the present invention has described the above specific implementation modes, it can be understood by those skilled in the art that the described implementation modes may be changed without departing from the principles and spirit of the present invention, and the protection scope of the present invention is defined by the described claims and their equivalents.

Claims

1. A radiator automatic dust removal device, comprising a fan blade, characterized in that: A torsion shaft is provided at one end of the fan blade, and the torsion shaft is connected to the linkage part through a torsion mechanism, and the torsion shaft radially passes through the limit part, and a reset part is axially provided between the linkage part and the limit part, and a tensioning part is provided on the fastener, and the tensioning part passes through the linkage part, the reset part and the limit part in sequence, and extends out from the front end of the limit part, and the tensioning part has a limiting structure, and the limiting structure cooperates with the front end of the limit part; when the tensioning part is in a non-tensioned state, the linkage part does not undergo axial displacement; when the tensioning part is in a tensioned state, the linkage part undergoes axial displacement; the limiting structure is formed by bending the tensioning part located at the front end of the limit part; it also includes a guide column, the tensioning part axially passes through the guide column, and the guide column The linkage member axially passes through the tensioning member, and the tensioning member cooperates with the guide column through a bearing, and the fastener abuts against one end of the guide column through a thrust bearing; the other end of the guide column is axially fixed to the tensioning member through an internal retaining spring, or the other end of the guide column is sleeved with a shaft sleeve, and the shaft sleeve is axially fixed to the tensioning member through an internal retaining spring; it also includes a sleeve, which is arranged at the front end of the limiting member, the tensioning member passes through the sleeve, and the sleeve abuts against the limiting member through a thrust bearing, or the sleeve abuts against the head cover through a thrust bearing, and the head cover abuts against the limiting member; the sleeve is in the shape of a circular tube, and the limiting structure formed by bending the tensioning member passes through the sleeve, and the sleeve has the same bending angle as that of the tensioning member.

2. The automatic dust removal device for radiator according to claim 1, characterized in that: The base of the torsion shaft cooperates with the outer periphery of the linkage member and the limiting member respectively to limit the radial movement of the fan blades.

3. The automatic dust removal device for radiator according to claim 1 or 2, characterized in that: The torsion mechanism comprises an eccentric tooth protrusion arranged on the base of the torsion shaft and a circumferential groove arranged on the outer periphery of the linkage member, and the eccentric tooth protrusion is located in the circumferential groove.

4. The automatic dust removal device for radiator according to claim 1 or 2, characterized in that: The torsion mechanism comprises a gear arranged on the base of the torsion shaft and a rack arranged on the outer periphery of the linkage member, and the gear matches the rack.

5. The automatic dust removal device for radiator according to claim 1 or 2, characterized in that: The torsion mechanism comprises a torsion spring, one end of which is fixed on the torsion shaft, and the other end of which is arranged on the linkage member.

6. The automatic dust removal device for radiator according to claim 1 or 2, characterized in that: The limiting member is provided with a through hole, and the torsion shaft radially passes through the through hole.

7. The automatic dust removal device for radiator according to claim 1 or 2, characterized in that: The linkage member comprises a linkage upper member and a linkage lower member.

8. The automatic dust removal device for radiator according to claim 6, characterized in that: It also includes a protective sleeve, the torsion shaft radially passes through the protective sleeve, and the protective sleeve radially passes through the through hole and cooperates with the limiting member.

9. The automatic dust removal device for radiator according to claim 1 or 2, characterized in that: The fan blades and the torsion shaft are pin-connected to each other via a pin shaft, and / or the root of the fan blade has an internal thread, the torsion shaft is provided with an external thread, and the fan blades are threadedly connected to the torsion shaft.

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