Light beam moving head lamp capable of preventing synchronous belt from loosening

Abstract

The utility model belongs to the technical field of light beam moving head lamps, and discloses a light beam moving head lamp capable of preventing a synchronous belt from loosening, which comprises a moving head lamp body and further comprises a tensioning mechanism, and the tensioning mechanism comprises a support, tensioning rollers connected with the support in a sliding mode and an adjusting device used for adjusting the distance between the tensioning rollers. The number of the tensioning rollers is two, the synchronous belt penetrates through a gap between the two tensioning rollers, the upper side and the lower side of the synchronous belt make rolling contact with the two tensioning rollers respectively, the adjusting device comprises a sliding block and two supporting plates, the two supporting plates are symmetrically arranged on the two sides of the sliding block, sliding grooves are formed in the supporting plates, and rotating shafts of the tensioning rollers are arranged in the sliding grooves in a sliding mode. Locking bolts used for locking the tensioning rollers are connected into the sliding grooves in a sliding mode. According to the scheme, the tensioning mechanism is arranged in the supporting arm of the moving head lamp body and can adjust the tensioning force of the synchronous belt, so that the synchronous belt keeps proper tensioning degree; the problem that the synchronous belt of the beam moving head lamp is loosened is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of light beam moving head lights, and in particular relates to a light beam moving head light capable of preventing a synchronous belt from loosening. Background Art

[0002] Beam moving head light is a kind of lighting equipment specially used for stage performances and shows. It is used to illuminate actors or specific areas on the stage to create various visual effects and atmospheres.

[0003] The existing publication (announcement) number is "CN211289955U", a moving head light transmission mechanism and a moving head light, which prevents the synchronous belt from becoming loose by arranging an elastic member between the positioning plate and the motor. In addition, a tensioning roller is arranged between the driving gear and the driven gear on the main bracket, so that the synchronous belt is attached to the tensioning roller, thereby realizing the tensioning of the synchronous belt.

[0004] The elastic member provided in the above device is only used during installation to avoid the randomness of human labor causing the timing belt to be loose and tight. However, during the use of the moving head light, the following problems may occur: (1) The timing belt will naturally wear out, and its material will gradually lose its elasticity due to fatigue, resulting in a decrease in tension. (2) The moving head light will generate heat during operation, especially when the motor and the transmission belt are in close proximity, and the tension state of the timing belt will change due to thermal expansion and contraction. Utility Model Content

[0005] The purpose of this scheme is to provide a beam moving head light that can prevent the synchronous belt from loosening, so as to solve the problem of the synchronous belt loosening of the moving head light.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a beam moving head light that can prevent the synchronous belt from loosening, comprising a moving head light body, and also comprising: a tensioning mechanism, wherein the tensioning mechanism is used to prevent the synchronous belt of the moving head light body from loosening, and the tensioning mechanism is arranged in the support arm of the moving head light body.

[0007] The principle of this solution is that by setting a tensioning mechanism in the support arm of the moving head light body, the mechanism can adjust the tension of the synchronous belt as the synchronous belt changes due to wear, thermal expansion and contraction during use, so that the synchronous belt maintains appropriate tension.

[0008] The technical effect of this solution is that, unlike relying only on elastic parts to maintain the pre-tightening degree of the synchronous belt during installation, the tensioning mechanism in this solution can be adjusted according to various working conditions during the actual use of the moving head light. When the elasticity of the synchronous belt decreases due to natural wear and material fatigue, the tensioning mechanism can maintain the appropriate tensioning force to prevent the synchronous belt from being loose or too tight.

[0009] Furthermore, the tensioning mechanism includes a bracket, a tensioning roller slidably connected to the bracket, and an adjustment device for adjusting the spacing between the tensioning rollers; the number of the tensioning rollers is two, the synchronous belt passes through the gap between the two tensioning rollers, and the upper and lower sides of the synchronous belt are in rolling contact with the two tensioning rollers respectively.

[0010] The technical effects of this solution are: (1) The synchronous belt is tightly fitted with two tension rollers, and the upper and lower sides are respectively in rolling contact with the tension rollers, and the tension of the synchronous belt is adjusted by the tension rollers. The gap between the two tension rollers is adjusted by the adjustment device to make the synchronous belt fit with the tension rollers. (2) By setting two tension rollers, the synchronous belt is tightly fitted with the tension rollers on its upper and lower sides and in rolling contact, which can ensure that the synchronous belt always maintains a suitable tension state during operation, effectively avoiding the problem of relaxation caused by wear, fatigue or thermal expansion and contraction.

[0011] Furthermore, the adjustment device includes a slider and two support plates, the two support plates are symmetrically arranged on both sides of the slider, the support plates are provided with a slide groove, the rotating shaft of the tensioning roller is slidably arranged in the slide groove, and a locking bolt for locking the tensioning roller is slidably connected in the slide groove.

[0012] The technical effect of this solution is that by loosening the locking bolt, the tensioning roller slides in the slide groove to adjust the gap between the two tensioning rollers, and then tightening the locking bolt to fix the gap between the two tensioning rollers.

[0013] Furthermore, the bracket is provided with a first through slot, the slider is slidably disposed in the first through slot, the first through slot is provided with a limiting slot, and the slider is slidably connected to the limiting slot.

[0014] The technical effect of this solution is that the limit groove provides positioning and guiding functions for the movement of the slider.

[0015] Furthermore, the tensioning mechanism also includes a lifting device for adjusting the height of the tensioning roller; the bracket is provided with a second through slot, and the lifting device includes a threaded slider slidingly arranged in the second through slot and a screw rod threadedly connected to the threaded slider, the threaded slider is used to drive the tensioning roller to rise and fall, the threaded slider is slidably connected to the tensioning roller, one end of the screw rod is rotatably connected to the bracket, and the other end extends out of the bracket.

[0016] The technical effects of this solution are as follows: (1) The lifting device is set to adjust the height of the tensioning roller. When the synchronous belt is loose, it is necessary to tighten the synchronous belt. Therefore, the height of the two tensioning rollers is adjusted to tighten the synchronous belt. (2) By rotating the screw rod, the threaded slider is driven up, and then the two tensioning rollers are driven to rise synchronously to tighten the synchronous belt.

[0017] Furthermore, the second through groove is provided with a guide groove, and the threaded slider is slidably connected to the guide groove.

[0018] The technical effect of this solution is that the guide groove provides positioning and guiding functions for the rise and fall of the threaded slider.

[0019] Furthermore, the tensioning mechanism also includes a locking device, which is used to lock the screw rod; the locking device includes a ratchet coaxially connected to the screw rod and a pawl for limiting the reverse rotation of the ratchet wheel, and the pawl is arranged in cooperation with the ratchet wheel.

[0020] The technical effects of this solution are: (1) When the screw is rotated, the ratchet wheel is driven to rotate synchronously. When the screw stops rotating, the pawl restricts the rotation of the ratchet wheel to lock the screw. (2) After the screw is rotated to adjust the height of the tensioning roller, a locking mechanism needs to be set to fix the position of the tensioning roller.

[0021] Furthermore, one end of the screw rod extending out of the bracket is connected to a knob.

[0022] The technical effect of this solution is that the user rotates the knob to turn the screw rod, thereby adjusting the height of the tensioning roller.

[0023] Furthermore, the knob is arranged on the outer shell of the support arm, and an anti-slip pattern is provided on the knob.

[0024] The technical effect of this solution is to increase the friction coefficient between the knob and the finger to avoid slipping during rotation.

[0025] Furthermore, the bracket is symmetrically provided with four hanging ears, and the hanging ears are fixed in the support arm by bolts.

[0026] The technical effect of this solution is that the tensioning mechanism is fixed in the support arm by means of the hanging ears and bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural schematic diagram of a beam moving head light for preventing synchronous belt loosening according to the utility model;

[0028] Figure 2 This is a schematic diagram of the support arm structure of a beam moving head light that prevents the synchronous belt from loosening according to the utility model;

[0029] Figure 3 The structure diagram of the tensioning mechanism of the utility model is shown in FIG. Figure 1 ;

[0030] Figure 4 The structure diagram of the tensioning mechanism of the utility model is shown in FIG. Figure 2 ;

[0031] Figure 5 The structure diagram of the tensioning mechanism of the utility model is shown in FIG. Figure 3 ;

[0032] Figure 6 for Figure 5 Magnified view at A in the middle.

[0033] The names of the corresponding marks in the accompanying drawings are: moving head light body 1, synchronous belt 11, support arm 12, tensioning mechanism 2, bracket 21, first through groove 211, limiting groove 2111, second through groove 212, guide groove 2121, hanging ear 213, tensioning roller 22, adjusting device 23, slider 231, support plate 232, slide groove 2321, locking bolt 233, lifting device 24, threaded slider 241, screw rod 242, knob 243, locking device 25, ratchet 251, pawl 252. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the concept and technical effects of the utility model in combination with the embodiments, so as to fully understand the purpose, features and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model:

[0035] Example:

[0036] See also Figure 1 and Figure 2 A beam moving head light for preventing a synchronous belt from loosening comprises a moving head light body 1 and a tensioning mechanism 2, wherein the tensioning mechanism 2 is used to prevent a synchronous belt 11 of the moving head light body 1 from loosening, and the tensioning mechanism 2 is arranged in a supporting arm 12 of the moving head light body 1. By arranging the tensioning mechanism 2 in the supporting arm 12 of the moving head light body 1, the tensioning force of the synchronous belt 11 can be adjusted according to the wear, thermal expansion and contraction of the synchronous belt 11 during use, so that the synchronous belt 11 maintains an appropriate tension.

[0037] See also Figure 3-Figure 4The tensioning mechanism 2 includes a bracket 21, a tensioning roller 22 slidably connected to the bracket 21, and an adjusting device 23 for adjusting the spacing of the tensioning rollers 22; the bracket 21 is symmetrically provided with four hanging ears 213, the hanging ears 213 are fixed in the support arm 12 by bolts, and the tensioning mechanism 2 is fixed in the support arm 12 by the hanging ears 213 and the bolts. There are two tensioning rollers 22, and the synchronous belt 11 passes through the gap between the two tensioning rollers 22, and the upper and lower sides of the synchronous belt 11 are respectively in rolling contact with the two tensioning rollers 22. The synchronous belt 11 is tightly fitted with the two tensioning rollers 22, and the upper and lower sides of the synchronous belt 11 are respectively in rolling contact with the tensioning rollers 22, and the tension of the synchronous belt 11 is adjusted by the tensioning rollers 22. The gap between the two tensioning rollers 22 is adjusted by the adjusting device 23, so that the synchronous belt 11 fits with the tensioning rollers 22. By providing two tensioning rollers 22, the synchronous belt 11 is in close contact with the tensioning rollers 22 at its upper and lower sides and in rolling contact, which ensures that the synchronous belt 11 always maintains a suitable tension state during operation and effectively avoids relaxation problems caused by wear, fatigue or thermal expansion and contraction.

[0038] The adjusting device 23 includes a slider 231 and two support plates 232. The two support plates 232 are symmetrically arranged on both sides of the slider 231. The support plate 232 is provided with a slide groove 2321. The rotating shaft of the tensioning roller 22 is slidably arranged in the slide groove 2321. A locking bolt 233 for locking the tensioning roller 22 is slidably connected in the slide groove 2321. By loosening the locking bolt 233, the tensioning roller 22 slides in the slide groove 2321 to adjust the gap size between the two tensioning rollers 22, and then tighten the locking bolt 233 to fix the gap between the two tensioning rollers 22. The bracket 21 is provided with a first through groove 211. The slider 231 is slidably arranged in the first through groove 211. The first through groove 211 is provided with a limiting groove 2111. The slider 231 is slidably connected to the limiting groove 2111. The limiting groove 2111 provides positioning and guiding functions for the movement of the slider 231.

[0039] The tensioning mechanism 2 also includes a lifting device 24 for adjusting the height of the tensioning roller 22. The lifting device 24 is provided to adjust the height of the tensioning roller 22. When the synchronous belt 11 is loose, the synchronous belt 11 needs to be tightened. Therefore, the heights of the two tensioning rollers 22 are adjusted to tighten the synchronous belt 11. The bracket 21 is provided with a second through slot 212. The lifting device 24 includes a threaded slider 241 slidably arranged in the second through slot 212 and a screw rod 242 threadedly connected to the threaded slider 241. The threaded slider 241 is used to drive the tensioning roller 241 to rise and fall. The threaded slider 241 is slidably connected to the tensioning roller 22. One end of the screw rod 242 is rotatably connected to the bracket 21, and the other end extends out of the bracket 21. The end of the screw rod 242 extending out of the bracket 21 is connected to a knob 243. The knob 243 is arranged on the outer shell of the support arm 12, and the knob 243 is provided with an anti-slip pattern. The user rotates the knob 243 to rotate the screw rod 242, thereby adjusting the height of the tensioning roller 22. The threaded slider 241 is driven to rise by rotating the screw rod 242, and then the two tensioning rollers 22 are driven to rise synchronously to tighten the synchronous belt 11. The second through groove 212 is provided with a guide groove 2121, and the threaded slider 241 is slidably connected to the guide groove 2121. The guide groove 2121 provides positioning and guiding functions for the rise and fall of the threaded slider 241.

[0040] See also Figure 5 and Figure 6 The tensioning mechanism 2 also includes a locking device 25, which is used to lock the screw rod 242. After the screw rod 242 is rotated to adjust the height of the tensioning roller 22, the locking device 25 needs to be set to fix the position of the tensioning roller 22; the locking device 25 includes a ratchet 251 coaxially connected to the screw rod 242 and a pawl 252 for limiting the reverse rotation of the ratchet 251, and the pawl 252 is arranged in cooperation with the ratchet 251; when the screw rod 242 is rotated to drive the ratchet 251 to rotate synchronously, when the screw rod 242 stops rotating, the pawl 252 limits the rotation of the ratchet 251 to lock the screw rod 242.

[0041] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A beam moving head light for preventing a synchronous belt from loosening, comprising a moving head light body (1), characterized in that: Also includes: A tensioning mechanism (2), the tensioning mechanism (2) being used to prevent the synchronous belt (11) of the moving head light body (1) from loosening, the tensioning mechanism (2) being arranged in a support arm (12) of the moving head light body (1); The tensioning mechanism (2) comprises a bracket (21), a tensioning roller (22) slidably connected to the bracket (21), and an adjusting device (23) for adjusting the spacing between the tensioning rollers (22); the number of the tensioning rollers (22) is two, the synchronous belt (11) passes through the gap between the two tensioning rollers (22), and the upper and lower sides of the synchronous belt (11) are in rolling contact with the two tensioning rollers (22) respectively; the adjusting device (23) comprises a slider (231) and two support plates (232), the two support plates (232) being symmetrically arranged on the slider (2 On both sides of the support plate (232), a slide groove (2321) is provided on the support plate (232), a rotating shaft of the tensioning roller (22) is slidably arranged in the slide groove (2321), a locking bolt (233) for locking the tensioning roller (22) is slidably connected in the slide groove (2321); the bracket (21) is provided with a first through groove (211), the sliding block (231) is slidably arranged in the first through groove (211), the first through groove (211) is provided with a limiting groove (2111), and the sliding block (231) is slidably connected to the limiting groove (2111); The tensioning mechanism (2) further comprises a lifting device (24) for adjusting the height of the tensioning roller (22); the bracket (21) is provided with a second through slot (212); the lifting device (24) comprises a threaded slider (241) slidably arranged in the second through slot (212) and a screw rod (242) threadedly connected to the threaded slider (241); the threaded slider (241) is used to drive the tensioning roller (22) to rise and fall; the threaded slider (241) is slidably connected to the tensioning roller (22); one end of the screw rod (242) is rotatably connected to the bracket (21), and the other end extends out of the bracket (21).

2. The beam moving head light for preventing synchronous belt loosening according to claim 1, characterized in that: The second through groove (212) is provided with a guide groove (2121), and the threaded slider (241) is slidably connected to the guide groove (2121).

3. The beam moving head light for preventing synchronous belt loosening according to claim 1, characterized in that: The tensioning mechanism (2) further comprises a locking device (25), the locking device (25) being used to lock the screw rod (242); the locking device (25) comprising a ratchet wheel (251) coaxially connected to the screw rod (242) and a ratchet pawl (252) for limiting the reverse rotation of the ratchet wheel (251), the ratchet pawl (252) being arranged in cooperation with the ratchet wheel (251).

4. The beam moving head light for preventing synchronous belt loosening according to claim 3, characterized in that: One end of the screw rod (242) extending out of the bracket (21) is connected to a knob (243).

5. The beam moving head light for preventing synchronous belt loosening according to claim 4, characterized in that: The knob (243) is arranged on the outer shell of the support arm (12), and an anti-slip pattern is provided on the knob (243).

6. The beam moving head light for preventing synchronous belt loosening according to claim 1, characterized in that: The bracket (21) is symmetrically provided with four hanging ears (213), and the hanging ears (213) are fixed in the support arm (12) by means of bolts.

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