Manual transmission belt pressing device convenient and fast to use

Abstract

The utility model discloses a manual transmission belt pressing device convenient and fast to use. The manual transmission belt pressing device comprises a fixed base, the transmission nut sleeve is fixedly connected with the fixed base; the operation screw rod is in threaded transmission connection with the transmission nut sleeve, and an operation rotating wheel handle is arranged at the upper end of the operation screw rod; and the belt tensioning assembly is connected with the lower end of the operation screw rod. The pressing device can conveniently and rapidly meet the requirement for pressing the belt, the belt can be pressed only by rotating the operation rotating wheel handle downwards, safety is high, the operation process is far away from a belt pulley, and the danger of hurting people is avoided; in addition, the complicated operation that a nut needs to be screwed or unscrewed through a wrench and a tensioning wheel needs to be manually moved upwards in an existing pressing device can be avoided. Therefore, the pressing device has the advantages of being convenient and fast to operate and high in use safety.

Description

Technical Field

[0001] This utility model relates to the technical field of belt tightening devices, and more specifically to a manual and convenient transmission belt tightening device. Background Technology

[0002] In ship design and construction, there are often devices that need to be driven by the main engine pulley, such as engine-driven bilge fire pumps, engine-driven steering gear oil pumps, and engine-driven generators. These engine-driven devices typically do not need to operate continuously; they only require shunt operation under specific conditions (shunt operation involves tightening the belt 300, causing the driving pulley 400 to drive the driven pulley 500 via the tensioned belt 300, which in turn drives the corresponding equipment). For example, an engine-driven fire pump is normally in a shunt state (shunt operation means the belt 300 is loose, preventing the driving pulley 400 from driving the driven pulley 500, thus preventing the driven pulley 500 from driving the corresponding equipment). It only needs to be shunt-driven to operate when firefighting is required. Therefore, a simple and quick device is needed to allow the fire pump to be quickly shunted and pulled.

[0003] Currently, the commonly used method is Figure 1 , Figure 2 The belt tensioning device shown requires loosening nut 100 and manually raising tension wheel 200 when assembling the belt. This allows tension wheel 200 to contact the belt and tighten it before locking nut 100. However, this operation requires loosening and tightening nut 100 with a wrench, which is time-consuming, cumbersome, and inconvenient. Furthermore, the manual raising of tension wheel 200 brings personnel close to the belt and other moving parts, posing a certain operational risk.

[0004] Therefore, how to provide a simple, quick, and safe manual transmission belt tightening device that can tighten belts is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the present invention provides a simple, quick and safe manual transmission belt tightening device that can tighten belts.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A manual, portable transmission belt tightening device includes:

[0008] Fixed base;

[0009] A transmission nut sleeve, which is fixedly connected to the fixed base;

[0010] An operating screw is threadedly connected to the transmission nut, and the upper end of the operating screw has an operating wheel handle.

[0011] A belt tensioning assembly is connected to the lower end of the operating screw.

[0012] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a manual and convenient transmission belt tightening device. When it is necessary to tighten the belt, simply rotate the operating handle to drive the operating screw to rotate. Then, under the thread transmission of the transmission nut sleeve, the operating screw moves down and drives the belt tensioning component to move down, thereby tightening the belt through the belt tensioning component. When it is not necessary to tighten the belt, simply rotate the operating handle in the opposite direction to make the belt tensioning component move up under the drive of the operating screw and disengage from the belt.

[0013] This clamping device can conveniently and quickly solve the need for belt clamping. Simply rotate the operating wheel handle downwards to clamp the belt. It is not only highly safe, but also avoids the cumbersome operation of existing clamping devices, such as using a wrench to tighten or loosen the nut and manually moving the tension wheel upwards.

[0014] Therefore, the clamping device of this utility model has the advantages of convenient and quick operation and high safety.

[0015] Furthermore, the belt tensioning assembly includes:

[0016] L-shaped connecting plate, wherein the horizontal plate of the L-shaped connecting plate is detachably connected to the lower end of the operating screw;

[0017] A connecting shaft is provided, one end of which is detachably connected to the vertical plate of the L-shaped connecting plate.

[0018] A belt tensioning cylinder is sleeved on the connecting shaft.

[0019] The beneficial effects of adopting the above technical solution are: the belt tensioner presses against the belt, and when the belt moves, the belt tensioner can be driven to roll by friction, which can reduce the friction between the belt and the belt tensioner and avoid the problem of component wear and damage.

[0020] Furthermore, the lower end of the operating screw passes through the horizontal plate, and two first locking nuts are screwed onto the operating screw. The two first locking nuts are located on the top and bottom surfaces of the horizontal plate, respectively, for locking and fixing the horizontal plate and the operating screw.

[0021] The beneficial effects of adopting the above technical solution are: the operating screw and the cross plate can be quickly assembled and disassembled by two locking nuts, making assembly and disassembly simple and quick.

[0022] Furthermore, a first bearing and a second bearing are spaced apart on the connecting shaft, and the belt tensioning sleeve is fixed on the outer ring of the first bearing and the second bearing.

[0023] The beneficial effects of adopting the above technical solution are: improving the smoothness of the belt tensioner rolling, thereby ensuring the stability of belt drive, reducing the friction between the belt tensioner and the connecting shaft, and avoiding heat and wear after long-term use.

[0024] Furthermore, the belt tensioning cylinder is provided with a first bearing mounting groove and a second bearing mounting groove at both ends, with the first bearing embedded in the first bearing mounting groove and the second bearing embedded in the second bearing mounting groove.

[0025] The beneficial effects of adopting the above technical solution are: to achieve concealed installation of bearings and improve the structural simplicity of the device.

[0026] Furthermore, one side of the first bearing is axially limited on the bottom surface of the first bearing mounting groove, one end of the connecting shaft has a stop head, and the other side of the second bearing is axially limited on one side of the stop head; one side of the second bearing is axially limited on the bottom surface of the second bearing mounting groove, and the other end of the connecting shaft is fitted with a stop plate, and the other side of the second bearing is axially limited on one side of the stop plate.

[0027] The beneficial effects of adopting the above technical solution are: avoiding the problems of abnormal noise and unstable operation caused by axial movement of the bearing.

[0028] Furthermore, the other end of the connecting shaft passes through the vertical plate and is locked and fixed to the other side of the stop plate by a second locking nut screwed onto the connecting shaft.

[0029] The beneficial effects of adopting the above technical solution are: easy assembly and disassembly of the vertical plate and connecting shaft.

[0030] Furthermore, a friction pad is pressed between the second locking nut and the vertical plate, and the friction pad is sleeved on the connecting shaft.

[0031] The beneficial effects of adopting the above technical solution are: increasing the tightening force of the second locking nut and improving the stability of the vertical plate and connecting shaft after tightening.

[0032] The overall effect of this utility model is:

[0033] 1. It can conveniently and quickly solve the need for belt tightening. Simply rotate the operating wheel handle to tighten the belt and achieve the desired effect. No disassembly of any device or use of any tools or fixtures is required.

[0034] 2. High operational safety: the entire process only requires rotating the control wheel handle, keeping the operator away from belts and moving parts.

[0035] 3. Durable and replaceable parts. The rollers have built-in bearings, resulting in low friction and preventing overheating even after prolonged use. If any parts are damaged, the corresponding parts can be disassembled and replaced.

[0036] 4. It can be made into standard parts, suitable for various ships. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0038] Figure 1 This is a three-dimensional first-view schematic diagram of the existing belt clamping device provided by this utility model.

[0039] Figure 2 This is a three-dimensional second-view schematic diagram of the existing belt clamping device provided by this utility model.

[0040] Figure 3 This is a first-person perspective view of a manual, convenient transmission belt tightening device for this utility model when tightening a belt.

[0041] Figure 4 This is a three-dimensional second-view diagram of a manual, convenient transmission belt tightening device provided by this utility model when tightening a belt.

[0042] Figure 5 This is a front view schematic diagram of a manual, convenient transmission belt tightening device provided by this utility model when tightening a belt.

[0043] Figure 6 for Figure 5 A schematic cross-sectional view of the mid-section AA.

[0044] Figure 7 This is a schematic diagram of the belt tensioning cylinder after it moves upward and detaches from the belt in a manual and convenient transmission belt tightening device provided by this utility model. Detailed Implementation

[0045] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0046] like Figures 3-7 As shown, this utility model embodiment discloses a manual, convenient transmission belt tightening device, comprising:

[0047] Fixed base 1, which is fixedly installed to the base on the ship;

[0048] Transmission nut sleeve 2, which can be welded or bolted to the fixed base 1;

[0049] Operating screw 3 is threadedly connected to transmission nut sleeve 2, and the upper end of operating screw 3 has operating wheel handle 4;

[0050] The belt tensioning assembly 5 is connected to the lower end of the operating screw 3.

[0051] In a specific embodiment, the belt tensioning assembly 5 includes:

[0052] L-shaped connecting plate 51, the horizontal plate 511 of L-shaped connecting plate 51 is detachably connected to the lower end of operating screw 3;

[0053] Connecting shaft 52, one end of which is detachably connected to the vertical plate 512 of L-shaped connecting plate 51;

[0054] The belt tensioning cylinder 53 is sleeved on the connecting shaft 52.

[0055] The lower end of the operating screw 3 passes through the horizontal plate 511. Two first locking nuts 6 are screwed onto the operating screw 3. The two first locking nuts 6 are located on the top and bottom surfaces of the horizontal plate 511, respectively, and are used to lock and fix the horizontal plate 511 and the operating screw 3.

[0056] A first bearing 7 and a second bearing 8 are spaced apart on the connecting shaft 52, and a belt tensioning cylinder 53 is fixed on the outer ring of the first bearing 7 and the second bearing 8.

[0057] The belt tensioning cylinder 53 has a first bearing mounting groove 531 and a second bearing mounting groove 532 at both ends. The first bearing 7 is embedded in the first bearing mounting groove 531 and the second bearing 8 is embedded in the second bearing mounting groove 532.

[0058] The first bearing 7 is axially limited on one side of the bottom surface of the first bearing mounting groove 531. One end of the connecting shaft 52 has a stop head 521, and the other side of the second bearing 8 is axially limited on one side of the stop head 521. The second bearing 8 is axially limited on one side of the bottom surface of the second bearing mounting groove 532. The other end of the connecting shaft 52 is fitted with a stop plate 9, and the other side of the second bearing 8 is axially limited on one side of the stop plate 9.

[0059] The other end of the connecting shaft 52 passes through the vertical plate 512 and is locked to the other side of the stop plate 9 by the second locking nut 10 screwed onto the connecting shaft 52.

[0060] A friction pad 11 is pressed between the second locking nut 10 and the vertical plate 512, and the friction pad 11 is sleeved on the connecting shaft 52.

[0061] The driving pulley 400 drives the driven pulley 500 to rotate together via the belt 300. Because the belt 300 is slightly longer than the required length, the driven pulley 500 will not rotate when no external force is applied due to insufficient friction.

[0062] When the driven pulley 500 needs to work, press the clamping device down to gradually tighten the belt 300. Due to the increase in friction, the driven pulley 500 will start to rotate driven by the driving pulley 400 through the belt 300. Press down further to ensure that the belt 300 does not slip.

[0063] The specific steps are as follows:

[0064] When the belt needs to be tightened, rotate the operating handle to rotate the operating screw. This, in turn, causes the operating screw to move downwards under the threaded drive of the transmission nut sleeve, pulling the belt tensioning cylinder downwards and pressing down on the belt to tighten it. At this time, the driving pulley can drive the driven pulley to rotate through the tensioned belt, and the driven pulley can then drive other equipment. When the belt does not need to be tightened, rotate the operating handle in the opposite direction to move the belt tensioning cylinder upwards and disengage it from the belt, causing the belt to loosen. In this case, the driving pulley cannot drive the driven pulley to rotate through the belt, and the driven pulley stops rotating.

[0065] The advantages of this clamping device are as follows:

[0066] 1. Compact and small structure, low cost.

[0067] 2. Easy to install; only a base needs to be made at the shipyard, and the device can be connected with bolts.

[0068] 3. Easy to operate; simply rotate the control wheel handle to achieve the desired result.

[0069] 4. During the clamping process, the drive pulley can be in a running state or a stopped state.

[0070] 5. High safety; the operation process is far from the pulley, eliminating the risk of injury.

[0071] 6. Durable: The belt tensioner has a built-in bearing, which can avoid the problem of excessive friction during high-speed rotation, thus preventing the belt tensioner from overheating.

[0072] 7. All parts can be replaced at any time.

[0073] 8. The distance between the belt tensioner and the belt is small, which ensures that the belt will not come off the belt groove of the pulley.

[0074] It should be noted that this device can be installed above the belt, such as... Figure 3 As shown, the belt is tensioned by lowering the belt tensioning cylinder. Alternatively, the device can be placed below the belt; when not in use, the belt tensioning cylinder is lowered to slack the belt. When in use, the belt tensioning cylinder is raised to tension the belt.

[0075] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0076] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hand-held portable drive belt tensioner characterized by, The utility model relates to a kind of belt tensioning device, including: Fixed base (1); Transmission nut sleeve (2), the transmission nut sleeve (2) is fixedly connected with the fixed base (1); Operating screw rod (3), the operating screw rod (3) is threadedly connected with the transmission nut sleeve (2), and the upper end of the operating screw rod (3) has operating rotating handle (4); Belt tensioning assembly (5), the lower end of the operating screw rod (3) is connected with the belt tensioning assembly (5); The belt tensioning assembly (5) includes: L-shaped connecting plate (51), the horizontal plate (511) of the L-shaped connecting plate (51) is detachably connected with the lower end of the operating screw rod (3); Connecting shaft rod (52), one end of the connecting shaft rod (52) is detachably connected with the vertical plate (512) of the L-shaped connecting plate (51); Belt tensioning cylinder (53), the belt tensioning cylinder (53) is sleeved on the connecting shaft rod (52).

2. A hand-held portable drive belt tensioner as defined in claim 1, wherein, The lower end of the operating screw rod (3) is arranged through the horizontal plate (511), and two first locking nuts (6) are screwed on the operating screw rod (3), and the two first locking nuts (6) are respectively located on the top end and the bottom end surface of the horizontal plate (511), for locking and fixing the horizontal plate (511) and the operating screw rod (3).

3. A hand-held portable drive belt tensioner as claimed in claim 1 or 2, wherein, First bearing (7) and second bearing (8) are spaced apart and sleeved on the connecting shaft rod (52), and the belt tensioning cylinder (53) is sleeved on the outer rings of the first bearing (7) and the second bearing (8).

4. A hand-held portable drive belt tensioner as defined in claim 3, wherein, First bearing mounting groove (531) and second bearing mounting groove (532) are respectively arranged at both ends of the belt tensioning cylinder (53), the first bearing (7) is embedded in the first bearing mounting groove (531), and the second bearing (8) is embedded in the second bearing mounting groove (532).

5. A hand-held portable drive belt tensioner as in claim 4 wherein, One side of the first bearing (7) is axially limited on the groove bottom surface of the first bearing mounting groove (531), one end of the connecting shaft rod (52) has a stop head (521), and the other side of the second bearing (8) is axially limited on one side surface of the stop head (521);The other side of the second bearing (8) is axially limited on the groove bottom surface of the second bearing mounting groove (532), and the other end of the connecting shaft rod (52) is sleeved with a stop sheet (9), and the other side of the second bearing (8) is axially limited on one side of the stop sheet (9).

6. A hand-held portable drive belt tensioner as in claim 5 wherein, The other end of the connecting shaft rod (52) is arranged through the vertical plate (512), and is locked and fixed on the other side of the stop sheet (9) by the second locking nut (10) screwed on the connecting shaft rod (52).

7. A hand-held portable drive belt tensioner as in claim 6 wherein, Friction pad (11) is pressed between the second locking nut (10) and the vertical plate (512), and the friction pad (11) is sleeved on the connecting shaft rod (52).

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