Temperature control turnover vehicle for testing high-power radio frequency unit

Abstract

The utility model relates to the technical field of high-power radio frequency unit testing, in particular to a temperature control tote cart for high-power radio frequency unit testing, which comprises a frame and universal trundles arranged at the bottom of the frame, a support frame for placing a product to be tested with a tray is arranged at the upper part of the frame, and two transmission roller ways are arranged on the support frame. A limiting frame is arranged above the supporting frame, a detachable stop rod is arranged at one end of the limiting frame, a handle is connected to the other end of the limiting frame, a mounting frame is arranged on the middle section of the frame, a cooling fan is mounted on the mounting frame, an air outlet of the cooling fan faces upwards, and sound absorption foam plates are arranged on the periphery of the frame. The device can move freely, is in butt joint with the tail of an assembly line, and is convenient to transfer; the cooling fan increases the flowing speed of air around the product and dissipates heat and cools the product; the sound-absorbing foam plates on the periphery of the frame can reduce noise and greatly reduce loss of air volume, the product cooling effect is remarkably improved, and the test yield is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-power radio frequency unit testing, in particular to a temperature-controlled turnover vehicle for high-power radio frequency unit testing. Background Art

[0002] With the increasing popularity of smartphones in mobile data traffic, mobile service providers are faced with the need to install a large number of high-capacity / high-speed base stations. The high-power radio frequency unit RRH (Remote Radio Head) mainly provides the RF processing function of the signal, and the baseband processing unit BBU (Building Base band Uint) centrally completes the baseband signal processing function. Multiple RRHs can be connected to one BBU, which can reduce the cost of networking and improve the efficiency of networking.

[0003] like Figure 1 As shown in the figure, due to the large weight of the high-power radio frequency unit RRH, which is mainly assembled from mechanical parts (pure aluminum die-casting shell) and circuit boards, the product uses a high-power power supply for power supply during the test. The power supply voltage is 48V, the current is 15A~20A, and the test time lasts about 125 minutes. Due to long-term operation, the product temperature rises. The actual measurement by the infrared thermal imager shows that the maximum surface temperature can reach 108℃. Figure 2 As shown, long-term operation at high temperature will lead to deterioration of product characteristics and stability, and even the risk of burning circuit boards and causing product scrapping. In the production process, it is directly reflected in the test yield data, with only 50% yield, and there is a safety hazard of scalding operators.

[0004] Therefore, it is necessary to design a carrying device to reduce the surface temperature of the product during the test, control the maximum temperature below 60°C, and the average temperature below 55°C, and at the same time improve the test yield of the product. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide a temperature-controlled turnover vehicle for testing a high-power radio frequency unit.

[0006] The utility model solves the technical problem by adopting the following technical solution: a temperature-controlled turnover vehicle for testing a high-power radio frequency unit, comprising a vehicle frame and universal casters installed at the bottom of the vehicle frame, a support frame for placing a product to be tested with a tray is provided on the upper part of the vehicle frame, two transmission rollers are provided on the support frame, a limit frame is provided above the support frame, a detachable shift lever is provided at one end of the limit frame, a handle is connected to the other end of the limit frame, a mounting frame is provided in the middle section of the vehicle frame, a cooling fan is installed on the mounting frame, an air outlet of the cooling fan faces upward, and sound-absorbing foam panels are provided around the vehicle frame.

[0007] Furthermore, the frame includes a bottom frame and four vertical poles, the bottom frame is formed by a first cross bar, a second cross bar, a third cross bar and a fourth cross bar connected end to end by a three-way joint, and a ninth cross bar and a tenth cross bar are also connected to the bottom frame, the ends of the ninth cross bar and the tenth cross bar are respectively mounted on the second cross bar and the fourth cross bar, and the ninth cross bar is connected to the first cross bar through a caster holder, and the tenth cross bar is connected to the third cross bar through a caster holder.

[0008] Furthermore, the support frame is formed by the fifth cross bar, the sixth cross bar, the seventh cross bar and the eighth cross bar connected end to end through a three-way joint, the four vertical poles are respectively installed on the four corners of the support frame and the bottom frame, and the two ends of the two transmission rollers are respectively connected to the sixth cross bar and the eighth cross bar.

[0009] Furthermore, the mounting frame includes an eleventh crossbar, a twelfth crossbar, a thirteenth crossbar and a fourteenth crossbar, as well as a fifteenth crossbar and a sixteenth crossbar, which are connected end to end through a three-way joint, and the ends of the fifteenth crossbar and the sixteenth crossbar are respectively mounted on the eleventh crossbar and the thirteenth crossbar.

[0010] Furthermore, the cooling fan has a casing, and the outer ring of the casing is symmetrically provided with two protrusions, and the two protrusions are respectively provided with through holes for the fifteenth cross bar and the sixteenth cross bar to pass through.

[0011] Further, the limit frame includes a seventeenth cross bar, an eighteenth cross bar, a nineteenth cross bar and a detachable gear rod, one end of the seventeenth cross bar is connected to one end of the detachable gear rod through a three-way joint, the other end of the seventeenth cross bar is connected to one end of the eighteenth cross bar through a four-way joint, the other end of the eighteenth cross bar is connected to one end of the nineteenth cross bar through a four-way joint, the other end of the nineteenth cross bar is connected to the other end of the detachable gear rod through a three-way joint, and the two ends of the handle are connected to the four-way joints at both ends of the eighteenth cross bar through a connecting rod.

[0012] Furthermore, the detachable gear lever comprises a rod body and an elastic member, wherein the rod body is connected to one end of the elastic member near one end, and the other end of the elastic member is connected to a three-way joint.

[0013] Furthermore, the tray includes a base, and a right-angle column is respectively provided at four corners of the base, and an arc-shaped protrusion is provided on the inner wall of the right-angle column, and cooling holes are symmetrically arranged in the middle section of the base.

[0014] The beneficial effects of the utility model are as follows: the utility model forms a frame of a turnover vehicle through a cross bar, a vertical bar, and a three-way joint / four-way joint. The bottom of the frame is provided with universal casters, which can realize free movement. The turnover vehicle is docked with the tail end of the assembly line. The assembled products are placed on a pallet and transferred to the support frame on the upper part of the frame through two transmission rollers. The air outlet of the cooling fan in the middle section of the frame faces upward. When the product is tested on the support frame, the cooling fan is activated to increase the flow speed of the air around the product, thereby dissipating heat and cooling the product. Sound-absorbing foam panels are arranged around the frame to reduce noise while greatly reducing the loss of air volume. The cooling effect of the product is significantly improved, thereby improving the test yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0016] Figure 1 It is a structural schematic diagram of the product to be tested of the utility model.

[0017] Figure 2 yes Figure 1 Temperature curve of the product surface during the current test.

[0018] Figure 3 It is a structural schematic diagram of the utility model.

[0019] Figure 4 It is an assembly drawing of the utility model.

[0020] Figure 5 It is a structural schematic diagram of a tray in the utility model.

[0021] Figure 6 yes Figure 1 Comparative temperature curves of products during existing testing and testing using the utility model.

[0022] In the figure: 1. Frame, 2. Universal caster, 3. Tray, 3-1. Base, 3-2. Right-angle column, 3-3. Arc-shaped protrusion, 3-4. Cooling hole, 4. Product to be tested, 5. Support frame, 6. Conveyor roller, 7. Removable gear lever, 8. Handle, 9. Mounting frame, 10. Cooling fan, 101. Cover, 102. Protrusion, 11. Sound-absorbing foam board, 12. Column, 13. First crossbar, 14. Second crossbar, 15. Third crossbar, 16. The fourth crossbar, 17. three-way joint, 18. the fifth crossbar, 19. the sixth crossbar, 20. the seventh crossbar, 21. the eighth crossbar, 22. the ninth crossbar, 23. the tenth crossbar, 24. the caster holder, 25. the eleventh crossbar, 26. the twelfth crossbar, 27. the thirteenth crossbar, 28. the fourteenth crossbar, 29. the fifteenth crossbar, 30. the sixteenth crossbar, 31. the seventeenth crossbar, 32. the eighteenth crossbar, 33. the nineteenth crossbar, 34. the four-way joint. DETAILED DESCRIPTION

[0023] The present invention is now further described in conjunction with the accompanying drawings. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0024] like Figure 1 As shown in the figure, the structural diagram of the product to be tested is 66.5cm long × 46.5cm wide × 16cm high, and the net weight is 45kg.

[0025] like Figure 2 and Figure 3 As shown, a temperature-controlled turnover vehicle for testing a high-power radio frequency unit comprises a frame 1 and a universal caster 2 installed at the bottom of the frame 1; a support frame 5 for placing a product to be tested 4 with a tray 3 is provided on the upper portion of the frame 1; two transmission rollers 6 are provided on the support frame 5; a limit frame is provided above the support frame 5; a detachable shift lever 7 is provided at one end of the limit frame; a handle 8 is connected to the other end of the limit frame; a mounting frame 9 is provided in the middle section of the frame 1; a cooling fan 10 is installed on the mounting frame 9; an air outlet of the cooling fan 10 faces upward; and sound-absorbing foam panels 11 are provided around the frame 1.

[0026] Among them, the frame 1 includes a bottom frame and four vertical rods 12. The bottom frame is formed by a first cross bar 13, a second cross bar 14, a third cross bar 15 and a fourth cross bar 16 connected end to end through a three-way joint 17. The bottom frame is also connected to a ninth cross bar 22 and a tenth cross bar 23. The ends of the ninth cross bar 22 and the tenth cross bar 23 are respectively mounted on the second cross bar 14 and the fourth cross bar 16, and the ninth cross bar 22 is connected to the first cross bar 13 through a caster holder 24, and the tenth cross bar 23 is connected to the third cross bar 15 through the caster holder 24.

[0027] The support frame 5 is formed by the fifth cross bar 18, the sixth cross bar 19, the seventh cross bar 20 and the eighth cross bar 21 connected end to end through a three-way joint 17. The four vertical poles 12 are respectively installed on the four corners of the support frame and the bottom frame. The two ends of the two transmission rollers 6 are respectively connected to the sixth cross bar 19 and the eighth cross bar 21.

[0028] The mounting frame 9 includes an eleventh crossbar 25, a twelfth crossbar 26, a thirteenth crossbar 27 and a fourteenth crossbar 28, as well as a fifteenth crossbar 29 and a sixteenth crossbar 30 connected end to end by a three-way joint 17. The ends of the fifteenth crossbar 29 and the sixteenth crossbar 30 are respectively sleeved on the eleventh crossbar 25 and the thirteenth crossbar 27. The cooling fan 10 has a housing 101. The outer ring of the housing 101 is symmetrically provided with two protrusions 102. The two protrusions 102 are respectively provided with through holes for the fifteenth crossbar 29 and the sixteenth crossbar 30 to pass through.

[0029] The limiting frame includes a seventeenth cross bar 31, an eighteenth cross bar 32, a nineteenth cross bar 33 and a detachable shift rod 7, one end of the seventeenth cross bar 31 is connected to one end of the detachable shift rod 7 via a three-way joint 17, the other end of the seventeenth cross bar 31 is connected to one end of the eighteenth cross bar 32 via a four-way joint 34, the other end of the eighteenth cross bar 32 is connected to one end of the nineteenth cross bar 33 via a four-way joint 34, the other end of the nineteenth cross bar 33 is connected to the other end of the detachable shift rod 7 via a three-way joint 17, and both ends of the handle 8 are connected to the four-way joints 34 at both ends of the eighteenth cross bar 32 via a connecting rod.

[0030] Specifically, the detachable lever 7 includes a rod body and an elastic member, wherein the rod body is connected to one end of the elastic member near one end, and the other end of the elastic member is connected to the three-way joint 17. The elastic member can be a spring, an elastic stretch, or the like.

[0031] like Figure 4 As shown, the tray 3 includes a base 3-1, and a right-angle column 3-2 is provided at each of the four corners of the base 3-1. The inner wall of the right-angle column 3-2 is provided with an arc-shaped protrusion 3-3, and the middle section of the bottom plate 3-1 is symmetrically provided with cooling holes 3-4. The wind blown by the cooling fan 10 is directly blown onto the product 4 to be tested through the cooling holes 3-4.

[0032] Since the cooling fan 10 has a maximum speed of 1400r / min, a maximum wind force of 4800m³ / h, and a wind pressure of 125Pa, a lot of noise is generated during operation. The frame 1 is surrounded by a sound-absorbing foam board 11 to reduce noise while greatly reducing air volume loss, significantly improving product cooling and thereby improving yield.

[0033] The turnover vehicle of this embodiment is easy to assemble, which not only solves the transportation problem of the products in the subsequent process, but also allows the heat generated by the product 4 to be tested to be quickly dissipated during the test, thereby reducing the surface temperature of the product to a safe temperature range (below 60°C) and an average temperature of 55°C (such as Figure 6 The test yield of the product is increased to more than 92%, which can reduce the waste of man-hours, increase the effective output of the test station, reduce the number of test stations, and thus reduce the cost of purchasing test station instruments and equipment.

[0034] The above-mentioned implementation mode is only for illustrating the technical concept and features of the utility model, and its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A temperature-controlled turnover vehicle for testing a high-power radio frequency unit, comprising a vehicle frame (1) and universal casters (2) mounted on the bottom of the vehicle frame (1), characterized in that: A support frame (5) for placing a product to be tested (4) with a tray (3) is provided on the upper part of the frame (1), two conveying rollers (6) are provided on the support frame (5), a limit frame is provided above the support frame (5), one end of the limit frame has a detachable shift lever (7), and the other end of the limit frame is connected to a handle (8), a mounting frame (9) is provided in the middle section of the frame (1), a cooling fan (10) is installed on the mounting frame (9), and the air outlet of the cooling fan (10) faces upwards, and sound-absorbing foam panels (11) are provided around the frame (1).

2. The temperature-controlled turnover vehicle for testing high-power radio frequency units according to claim 1, characterized in that: The frame (1) comprises a bottom frame and four vertical rods (12); the bottom frame is formed by connecting a first crossbar (13), a second crossbar (14), a third crossbar (15) and a fourth crossbar (16) end to end via a three-way joint (17); a ninth crossbar (22) and a tenth crossbar (23) are also connected to the bottom frame; the ends of the ninth crossbar (22) and the tenth crossbar (23) are respectively sleeved on the second crossbar (14) and the fourth crossbar (16); the ninth crossbar (22) is connected to the first crossbar (13) via a caster holder (24); and the tenth crossbar (23) is connected to the third crossbar (15) via the caster holder (24).

3. The temperature-controlled turnover vehicle for testing high-power radio frequency units according to claim 2, characterized in that: The support frame (5) is formed by connecting a fifth crossbar (18), a sixth crossbar (19), a seventh crossbar (20) and an eighth crossbar (21) end to end via a three-way joint (17); four vertical rods (12) are respectively mounted on four corners of the support frame and the bottom frame; and two ends of the two transmission rollers (6) are respectively connected to the sixth crossbar (19) and the eighth crossbar (21).

4. The temperature-controlled turnover vehicle for testing high-power radio frequency units according to claim 1, characterized in that: The mounting frame (9) comprises an eleventh crossbar (25), a twelfth crossbar (26), a thirteenth crossbar (27) and a fourteenth crossbar (28), as well as a fifteenth crossbar (29) and a sixteenth crossbar (30) connected end to end via a three-way joint (17); the fifteenth crossbar (29) and the sixteenth crossbar (30) are respectively sleeved on the eleventh crossbar (25) and the thirteenth crossbar (27) at both ends.

5. The temperature-controlled turnover vehicle for testing high-power radio frequency units according to claim 4, characterized in that: The cooling fan (10) comprises a casing (101), the outer ring of the casing (101) being symmetrically provided with two protrusions (102), and the two protrusions (102) are respectively provided with through holes for the fifteenth cross bar (29) and the sixteenth cross bar (30) to pass through.

6. The temperature-controlled turnover vehicle for testing high-power radio frequency units according to claim 1, characterized in that: The limit frame comprises a seventeenth cross bar (31), an eighteenth cross bar (32), a nineteenth cross bar (33) and a detachable shift rod (7); one end of the seventeenth cross bar (31) is connected to one end of the detachable shift rod (7) via a three-way joint (17); the other end of the seventeenth cross bar (31) is connected to one end of the eighteenth cross bar (32) via a four-way joint (34); the other end of the eighteenth cross bar (32) is connected to one end of the nineteenth cross bar (33) via a four-way joint (34); the other end of the nineteenth cross bar (33) is connected to the other end of the detachable shift rod (7) via a three-way joint (17); and both ends of the handle (8) are connected to the four-way joints (34) at both ends of the eighteenth cross bar (32) via a connecting rod.

7. The temperature-controlled turnover vehicle for testing a high-power radio frequency unit according to claim 1 or 6, characterized in that: The detachable shift lever (7) comprises a rod body and an elastic member, wherein the rod body is connected to one end of the elastic member near one end, and the other end of the elastic member is connected to a three-way joint (17).

8. The temperature-controlled turnover vehicle for testing high-power radio frequency units according to claim 1, characterized in that: The tray (3) comprises a base (3-1), each of the four corners of the base (3-1) being provided with a right-angle column (3-2), the inner wall of the right-angle column (3-2) being provided with an arc-shaped protrusion (3-3), and the middle section of the base (3-1) being symmetrically provided with cooling holes (3-4).

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