CN216477972U

CN216477972U - Cooling fan rotating speed testing device

Info

Publication number: CN216477972U
Application number: CN202123224974.2U
Authority: CN
Inventors: 刘邦军; 张万仓; 曹书
Original assignee: Suzhou New Standard Detection Technology Co ltd
Current assignee: Suzhou New Standard Detection Technology Co ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-05-10
Anticipated expiration: 2031-12-21

Abstract

The utility model discloses a cooling fan rotational speed testing arrangement relates to fan rotational speed test field, the on-line screen storage device comprises a base, base upper surface right side fixedly connected with gib block, gib block mid portion sliding connection has the slider, slider upper surface right side rotates and is connected with erects the screw rod that moves, erect and move screw rod top part threaded connection have the lug, lug left side fixedly connected with elevating platform, be provided with measuring component in the middle of the elevating platform upper surface, measuring component is including measuring the dish, it is connected with the axis of rotation to rotate in the middle of the measuring dish upper surface, the vice taper gear of axis of rotation top fixedly connected with, axis of rotation root right side fixedly connected with dead lever, dead lever right-hand member fixed connection dynamometer, the measuring end fixed connection iron ball of dynamometer, be provided with the scale mark in the middle of measuring dish upper surface front side, elevating platform upper surface left side fixed connection riser. The utility model discloses a set up vice bevel gear, main bevel gear and dynamometer, can reduce measuring device's cost.

Description

Cooling fan rotating speed testing device

Technical Field

The utility model relates to a fan rotational speed test field specifically is to relate to a cooling fan rotational speed testing arrangement.

Background

The cooling fan is an important component of a vehicle cooling system, and the performance of the fan directly influences the heat dissipation effect of the engine, and further influences the performance of the engine. The power consumed by the fan accounts for about 5% -8% of the output power of the engine, and the fan attracts more and more attention under the trend of pursuing environmental protection and low energy consumption. In addition, if the rotation speed of the fan is too slow or too fast, the cooling of the engine may be insufficient or excessive, which may deteriorate the working environment of the engine, and further affect the performance and the service life of the engine. It is therefore necessary to detect the rotation speed of the fan.

However, most of the existing fan speed detecting devices adopt a photoelectric coded disc speed measuring method or a hall element speed measuring method, a photosensitive element or a hall switch element, a corresponding circuit and a counter are required to be matched, the cost of the precision instruments is relatively expensive, and meanwhile, the program of the existing fan speed detecting devices for measuring corresponding adjusting positions of different fans is troublesome. In order to solve the above problems, it is necessary to provide a device for testing the rotation speed of a cooling fan.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the technical scheme provides a cooling fan rotating speed testing device, and solves the problems that most of the existing fan rotating speed testing devices proposed in the background technology adopt a photoelectric coded disc speed measuring method or a Hall element speed measuring method, a photosensitive element or a Hall switch element is required to be used, and a corresponding circuit and a counter are required to be matched, the cost of the precision instruments is relatively high, and the program of the existing fan rotating speed testing devices for measuring corresponding adjusting positions of different fans is relatively troublesome.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

a cooling fan rotating speed testing device comprises a base, wherein a guide strip is fixedly connected to the right side of the upper surface of the base, a sliding block is slidably connected to the middle of the guide strip, a vertical moving screw is rotatably connected to the right side of the upper surface of the sliding block, a convex block is in threaded connection with the part above the vertical moving screw, a lifting table is fixedly connected to the left side of the convex block, a measuring assembly is arranged in the middle of the upper surface of the lifting table and comprises a measuring disc, a rotating shaft is rotatably connected to the middle of the upper surface of the measuring disc, an auxiliary conical gear is fixedly connected to the top end of the rotating shaft, a fixed rod is fixedly connected to the right side of the root of the rotating shaft, a dynamometer is fixedly connected to the right end of the fixed rod, an iron ball is fixedly connected to the measuring end of the dynamometer, a scale mark is arranged in the middle of the front side of the upper surface of the measuring disc, a vertical plate is fixedly connected to the left side of the upper surface of the lifting table, a driving shaft is rotatably connected to the upper side of the vertical plate, and a main conical gear is fixedly connected to the right end of the driving shaft, the left end of the driving shaft is fixedly connected with a rubber sucker.

Preferably, the front and rear parts of the left side of the upper surface of the sliding block are fixedly connected with sliding rods, the surface above the sliding rods is slidably connected with a convex plate, and the right side of the convex plate is fixedly connected to the left side of the lifting platform.

Preferably, the right end front of the guide strip is fixedly connected with a supporting block, the bottom of the supporting block is fixedly connected to the upper surface of the right side of the base, a transverse moving screw is rotatably connected to the middle of the side surface of the supporting block, and the left end of the transverse moving screw is in threaded connection with the right side of the sliding block.

Preferably, the bottom of the measuring disc is fixedly connected to the upper surface of the lifting table, the part above the rotating shaft is rotatably connected with a transverse plate, the lower surface of the right side of the transverse plate is fixedly connected with a supporting column, and the bottom end of the supporting column is fixedly connected to the upper surface of the right side of the lifting table.

Preferably, the edge of the upper surface of the measuring disc is fixedly connected with a baffle ring.

Preferably, a cooling fan main body is arranged on the left side of the upper surface of the base, and a driving shaft is arranged in the middle of the cooling fan main body.

Preferably, the primary bevel gear is meshed with the secondary bevel gear, and the size of the primary bevel gear is consistent with that of the secondary bevel gear.

Compared with the prior art, the utility model provides a cooling fan rotational speed testing arrangement possesses following beneficial effect:

1. the auxiliary bevel gear, the main bevel gear and the dynamometer are arranged, so that the rotating speed of the cooling fan main body can be tested, the testing device is high in precision and can accurately measure the rotating speed of the cooling fan main body, common mechanical materials are adopted, the cost is low, the measuring method is changed, and a high-precision instrument required by common rotating speed measurement is avoided;

2. through setting up and erectting to move screw rod, sideslip screw rod and slider, can be according to the size difference of cooling fan main part, the position of this testing arrangement of adjustment for the rubber suction cup can hug closely on the drive shaft, measures the rotational speed of cooling fan main part.

Drawings

Fig. 1 is a schematic front perspective view of the present invention;

fig. 2 is a schematic structural diagram of the measuring assembly of the present invention.

The reference numbers in the figures are:

101. a cooling fan main body; 102. a base; 103. a slide bar; 104. a convex plate; 105. a lifting platform; 106. a slider; 107. vertically moving the screw rod; 108. a bump; 109. a guide strip; 110. traversing the screw rod; 111. a support block; 112. a drive shaft;

200. a measurement assembly; 201. a baffle ring; 202. a measuring disc; 203. a rotating shaft; 204. scale lines; 205. fixing the rod; 206. a force gauge; 207. an iron ball; 208. a secondary bevel gear; 209. a transverse plate; 210. a support pillar;

301. a rubber suction cup; 302. a main bevel gear; 303. a vertical plate; 304. a drive shaft.

Detailed Description

The following description is provided to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

Referring to fig. 1-2, a cooling fan rotation speed testing device comprises a base 102, a guide bar 109 is fixedly connected to the right side of the upper surface of the base 102, a sliding block 106 is slidably connected to the middle portion of the guide bar 109, a vertical moving screw 107 is rotatably connected to the right side of the upper surface of the sliding block 106, a projection 108 is in threaded connection with the upper portion of the vertical moving screw 107, a lifting table 105 is fixedly connected to the left side of the projection 108, a measuring component 200 is arranged in the middle of the upper surface of the lifting table 105, the measuring component 200 comprises a measuring disc 202, a rotating shaft 203 is rotatably connected to the middle of the upper surface of the measuring disc 202, an auxiliary conical gear 208 is fixedly connected to the top end of the rotating shaft 203, a fixing rod 205 is fixedly connected to the right side of the root portion of the rotating shaft 203, a dynamometer 206 is fixedly connected to the right end of the fixing rod 205, an iron ball 207 is fixedly connected to the measuring end of the dynamometer 206, a scale mark 204 is arranged in the middle of the front side of the upper surface of the measuring disc 202, and a vertical plate 303 is fixedly connected to the left side of the upper surface of the lifting table 105, a driving shaft 304 is rotatably connected above the side face of the vertical plate 303, the right end of the driving shaft 304 is fixedly connected with a main bevel gear 302, and the left end of the driving shaft 304 is fixedly connected with a rubber sucker 301;

referring to fig. 1, in use, the housing in front of the fan blades of the cooling fan main body 101 is removed to expose the driving shaft 112, and since the driving shaft 112 is located in the cooling fan main body 101 at a different position, the driving shaft is horizontally left or right, and therefore, it is necessary to move the rubber suction cup 301 laterally to adapt to the position of the driving shaft 112;

referring to fig. 1, during detection, the vertical movement screw 107 is screwed, so that the lifting platform 105 moves along the sliding rod 103, so that the rubber suction cup 301 can be located at the same height as the driving shaft 112, and then the traverse screw 110 is screwed, so that the sliding block 106 moves along the guide strip 109, so that the rubber suction cup 301 is tightly attached to the right end of the driving shaft 112, and the rubber suction cup 301 is adsorbed on the surface of the driving shaft 112, so that the cooling fan main body 101 can drive the rubber suction cup 301 to rotate together;

referring to fig. 1 and 2, the cooling fan main body 101 rotates to drive the rubber suction cup 301 to rotate, and further drive the main bevel gear 302 to rotate, so the auxiliary bevel gear 208 also rotates, and because the size of the main bevel gear 302 is consistent with that of the auxiliary bevel gear 208, the rotating speeds of the main bevel gear 302 and the auxiliary bevel gear 208 are consistent, and because of the driving of the auxiliary bevel gear 208, the iron ball 207 makes a circular centrifugal motion, and during the centrifugal motion, the iron ball 207 generates a centrifugal force, the dynamometer 206 displays the centrifugal force, which is denoted as F, and meanwhile, the radius of the circular motion track of the iron ball 207 is read by the scale line 204, which is denoted as r, the mass of the iron ball 207 is known, which is denoted as m, and then the angular velocity w of the iron ball 207 can be represented as mw from the formula F ═ mw²r is solved, and the rotational speed of the cooling fan main body 101 can be calculated from w.

Specifically, the front and back of the left side of the upper surface of the sliding block 106 are fixedly connected with a sliding rod 103, the surface above the sliding rod 103 is slidably connected with a convex plate 104, and the right side of the convex plate 104 is fixedly connected to the left side of the lifting platform 105.

The right end front of the guide bar 109 is fixedly connected with a supporting block 111, the bottom of the supporting block 111 is fixedly connected to the upper surface of the right side of the base 102, the middle of the side surface of the supporting block 111 is rotatably connected with a traverse screw 110, and the left end of the traverse screw 110 is in threaded connection with the right side of the sliding block 106.

The bottom of the measuring disc 202 is fixedly connected to the upper surface of the lifting table 105, the part above the rotating shaft 203 is rotatably connected with a transverse plate 209, the lower surface of the right side of the transverse plate 209 is fixedly connected with a supporting column 210, and the bottom end of the supporting column 210 is fixedly connected to the upper surface of the right side of the lifting table 105.

The edge of the upper surface of the measuring disc 202 is fixedly connected with a baffle ring 201.

The cooling fan main body 101 is arranged on the left side of the upper surface of the base 102, and the driving shaft 112 is arranged in the middle of the cooling fan main body 101.

Primary bevel gear 302 meshes with secondary bevel gear 208, and primary bevel gear 302 is the same size as secondary bevel gear 208.

The utility model discloses a theory of operation and use flow: the auxiliary bevel gear 208, the main bevel gear 302 and the dynamometer 206 are arranged, so that the rotating speed of the cooling fan main body 101 can be tested, the testing device is high in precision and can accurately measure the rotating speed of the cooling fan main body 101, common mechanical materials are adopted, the cost is low, the measuring method is changed, and high-precision instruments required by common rotating speed measurement are avoided; by arranging the vertical movement screw 107, the lateral movement screw 110 and the slider 106, the position of the testing device can be adjusted according to the size of the cooling fan main body 101, so that the rubber suction cup 301 can be tightly attached to the driving shaft 112 to measure the rotating speed of the cooling fan main body 101.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that all the embodiments and descriptions are provided in the present invention, and that various changes and modifications can be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The cooling fan rotating speed testing device is characterized by comprising a base (102), wherein a guide strip (109) is fixedly connected to the right side of the upper surface of the base (102), a sliding block (106) is slidably connected to the middle portion of the guide strip (109), a vertical moving screw (107) is rotatably connected to the right side of the upper surface of the sliding block (106), a convex block (108) is in threaded connection with the upper portion of the vertical moving screw (107), a lifting table (105) is fixedly connected to the left side of the convex block (108), a measuring component (200) is arranged in the middle of the upper surface of the lifting table (105), the measuring component (200) comprises a measuring disc (202), a rotating shaft (203) is rotatably connected to the middle of the upper surface of the measuring disc (202), an auxiliary conical gear (208) is fixedly connected to the top end of the rotating shaft (203), a fixing rod (205) is fixedly connected to the right side of the root of the rotating shaft (203), and a dynamometer (206) is fixedly connected to the right end of the fixing rod (205), the measuring end of the dynamometer (206) is fixedly connected with an iron ball (207), the middle of the front side of the upper surface of the measuring disc (202) is provided with a scale mark (204), the left side of the upper surface of the lifting table (105) is fixedly connected with a vertical plate (303), the upper side of the side surface of the vertical plate (303) is rotatably connected with a driving shaft (304), the right end of the driving shaft (304) is fixedly connected with a main bevel gear (302), and the left end of the driving shaft (304) is fixedly connected with a rubber sucker (301).

2. A cooling fan speed testing apparatus according to claim 1, wherein: the front and back of the left side of the upper surface of the sliding block (106) are fixedly connected with a sliding rod (103), the surface above the sliding rod (103) is slidably connected with a convex plate (104), and the right side of the convex plate (104) is fixedly connected to the left side of the lifting table (105).

3. A cooling fan speed testing apparatus according to claim 1, wherein: the right end front of the guide bar (109) is fixedly connected with a supporting block (111), the bottom of the supporting block (111) is fixedly connected to the upper surface of the right side of the base (102), a transverse moving screw rod (110) is rotatably connected to the middle of the side surface of the supporting block (111), and the left end of the transverse moving screw rod (110) is in threaded connection with the right side of the sliding block (106).

4. A cooling fan speed testing apparatus according to claim 1, wherein: the bottom of the measuring disc (202) is fixedly connected to the upper surface of the lifting table (105), the part above the rotating shaft (203) is rotatably connected with a transverse plate (209), the lower surface of the right side of the transverse plate (209) is fixedly connected with a supporting column (210), and the bottom end of the supporting column (210) is fixedly connected to the upper surface of the right side of the lifting table (105).

5. A cooling fan speed testing apparatus according to claim 1, wherein: the edge of the upper surface of the measuring disc (202) is fixedly connected with a baffle ring (201).

6. A cooling fan speed testing apparatus according to claim 1, wherein: the left side of the upper surface of the base (102) is provided with a cooling fan main body (101), and the middle part of the cooling fan main body (101) is provided with a driving shaft (112).

7. A cooling fan speed testing apparatus according to claim 1, wherein: the primary bevel gear (302) is meshed with the secondary bevel gear (208), and the size of the primary bevel gear (302) is consistent with that of the secondary bevel gear (208).