Automatic opening and closing transmission mechanism for orifice cover plate

Abstract

The utility model discloses an automatic opening and closing transmission mechanism for an orifice cover plate. The safety and efficiency of opening and closing operation of the cover plate are improved. The mechanism is mainly composed of a power receiving device, a transmission mechanism and a transmission connecting piece. The power receiving device transmits external power to the transmission mechanism through the bevel gear set and the linkage transmission shaft, and torque amplification and direction conversion are achieved. The transmission mechanism comprises a supporting track base, a receiving bevel gear and a transmission lead screw, and the opposite movement of the locking beam and the cover plate is ensured by adopting a positive and negative thread design. The gravity center change of the cover plate is considered in the design of the supporting sliding groove in the supporting rail base, and the stability of the cover plate in the moving process is guaranteed. The transmission connecting piece achieves self-adaptive angle adjustment of the cover plate through thread fit and hinge design, and the rigid connection problem is avoided. The transmission mechanism has the advantages of compact structure, high transmission efficiency, safe and reliable operation and the like, is suitable for complex working conditions such as hydropower stations, and remarkably improves the automatic operation level of the orifice cover plate.

Description

Technical Field

[0001] This utility model belongs to the field of safety protection devices for the gate opening of hydropower stations, and specifically relates to an automatic opening and closing transmission mechanism for the gate cover plate. Background Technology

[0002] In water conservancy and hydropower projects, the opening and closing of orifice covers is a routine requirement for equipment inspection and operation maintenance. Traditional orifice cover transmission mechanisms mostly use a single power drive or a simple linkage structure, which has the following structural limitations:

[0003] Redundancy in power transmission structure: Traditional mechanisms often rely on multi-stage gearboxes or hydraulic cylinders to directly drive the cover plate, resulting in a bulky device and an excessively long distance between the power input end and the execution end, leading to low transmission efficiency and susceptibility to mechanical jamming. For example, when using a hydraulic cylinder to directly push the cover plate, an additional guide rail is required, but the deviation between the rail and the axis of the hydraulic cylinder can easily cause the cover plate to shift, requiring frequent manual correction.

[0004] Insufficient precision in the coordinated movement of cover plates: For the opening and closing of multiple stacked cover plates, existing technologies mostly control them separately through independent drive units, lacking a linkage design. When multiple cover plates need to be opened or stacked synchronously, it is difficult to accurately match the movement speed of each unit, which can easily cause cover plate collisions or excessive gaps, and even lead to wear of the transmission screw threads (such as uneven force on one side of the trapezoidal thread). Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide an automatic opening and closing transmission mechanism for orifice cover plates. The power receiving device adopts a compact layout of bevel gear set (input bevel gear, output bevel gear) and linkage transmission shaft. It can be adapted to an external power source (such as an electric drill) through a quick connector to realize torque amplification and direction conversion, avoiding the bulky structure of traditional multi-stage reduction gearboxes.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] An automatic opening and closing transmission mechanism for an orifice cover includes a power receiving device, a transmission mechanism, and a transmission connector; the power receiving device is in transmission cooperation with the transmission mechanism, and the transmission mechanism is in transmission cooperation with the transmission connector; multiple transmission connectors are installed on the transmission mechanism.

[0008] Preferably, the power receiving device includes a mounting box, a quick connector, a thrust bearing, an input bevel gear, an output bevel gear, and a linkage drive shaft;

[0009] The mounting box contains a rotatable drive shaft with an output bevel gear that meshes with the input bevel gear. The input bevel gear is connected to a quick connector via a rotating shaft.

[0010] Preferably, the rotating shaft is mounted on the mounting box via a thrust bearing.

[0011] Preferably, the power receiving device further includes a drive bevel gear, which is coaxially mounted on the linkage transmission shaft.

[0012] Preferably, the transmission mechanism is installed on both sides of the traveling area of ​​the orifice locking beam; the transmission mechanism includes a supporting track seat, a receiving bevel gear, and a transmission screw;

[0013] It accepts bevel gears that mesh with drive bevel gears, and accepts bevel gears that are coaxially connected with transmission screws; the transmission screws are rotatably mounted on the support rail seat.

[0014] Preferably, the transmission connecting component includes a locking beam connecting screw sleeve, which is threadedly engaged with the transmission lead screw, and is used to connect with the locking beam.

[0015] Preferably, the transmission connector further includes a cover plate connecting screw sleeve and a cover plate connector; the cover plate connecting screw sleeve is threadedly engaged with the transmission lead screw, the cover plate connecting screw sleeve is connected to the cover plate connector via a mounting rod, and the cover plate connector is provided with a mounting hole; the mounting hole is used for hinged connection with the cover plate.

[0016] Preferably, the support track seat is provided with a cover plate support groove adapted to the support travel pulley, and the support travel pulley is used to slide on the cover plate support groove; the shape of the cover plate support groove is adapted to the travel trajectory of the first cover plate and the stacked cover plates.

[0017] Preferably, the cover plate support groove includes a first front cover plate support groove and a first rear cover plate support groove;

[0018] The front support groove of the first cover plate and the rear support groove of the first cover plate are connected, and the groove depth of the front support groove of the first cover plate is greater than the groove depth of the rear support groove of the first cover plate.

[0019] Preferably, the cover plate support groove further includes a front support groove for stacked cover plates and a rear support groove for stacked cover plates;

[0020] The front support groove of the stacked cover plate and the rear support groove of the stacked cover plate are connected, and the groove depth of the front support groove of the stacked cover plate is greater than the groove depth of the rear support groove of the stacked cover plate.

[0021] The present invention can achieve the following beneficial effects:

[0022] 1. The power receiving device adopts a compact layout of bevel gear set (input bevel gear, output bevel gear) and linkage transmission shaft. It can be adapted to external power source (such as electric drill) through quick connector to realize torque amplification and direction conversion, avoiding the bulky structure of traditional multi-stage reduction gearbox.

[0023] 2. The transmission mechanism integrates forward and reverse threaded transmission screws with support grooves of varying depths (support groove in front of the first cover plate, support groove behind the stacked cover plate, etc.). The groove depths satisfy L2 = L3 + support pulley width, ensuring that the support pulleys on the front and rear support shafts of the cover plate are always in contact with the bottom surface of the groove during movement, eliminating the risk of cover plate tipping over.

[0024] 3. The transmission connecting component converts the rotational motion of the transmission screw into the linear opposing movement of the locking beam and the cover plate through the threaded engagement of the locking beam connecting sleeve and the cover plate connecting sleeve. At the same time, the hinged design of the cover plate connecting component (the mounting hole and the mounting hinge seat engage) allows the cover plate to adapt to changes in angle during movement, avoiding mechanical interference caused by rigid connection. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0026] Figure 1 This is a structural diagram of the transmission mechanism of this utility model;

[0027] Figure 2 This is a structural diagram of the power receiving device of this utility model;

[0028] Figure 3 This is a structural diagram of the locking beam connecting screw sleeve of this utility model;

[0029] Figure 4 This is a structural diagram of the cover plate connecting screw sleeve of this utility model;

[0030] Figure 5 This is a diagram illustrating the effect of using this utility model;

[0031] Figure 6 This is a structural diagram of the first cover plate of this utility model;

[0032] Figure 7 This is a structural diagram of the superimposed cover plate of this utility model.

[0033] In the diagram: Power receiving device 21, transmission mechanism 22, transmission connector 23, mounting box 210, quick connector 211, thrust bearing 212, input bevel gear 213, output bevel gear 214, linkage transmission shaft 215, drive bevel gear 216, support rail seat 222, receiving bevel gear 221, transmission screw 220, first cover plate front support slide groove 222-1, first cover plate rear support slide groove 222-2, stacked cover plate front support slide groove 222-3, stacked cover plate rear support slide groove 222-4, locking beam connecting screw sleeve 230, thread 230-1, cover plate connecting screw sleeve 231, thread 231-1, mounting rod 231-2, cover plate connector 232, mounting hole 232-1, locking beam 7;

[0034] First cover plate 240, stacked cover plate 241, mounting hinge 240-1, front support shaft 240-2, rear support shaft 240-3, stacked cover plate front support shaft 241-2, stacked cover plate rear support shaft 241-3. Detailed Implementation

[0035] Preferred solutions include Figures 1 to 7 As shown, an automatic opening and closing transmission mechanism for an orifice cover plate includes:

[0036] It includes a power receiving device 21, a transmission mechanism 22, and a transmission connector 23; the power receiving device 21 is in transmission cooperation with the transmission mechanism 22, and the transmission mechanism 22 is in transmission cooperation with the transmission connector 23; multiple transmission connectors 23 are installed on the transmission mechanism 22.

[0037] The power receiving device 21 is the main power source receiving device. After amplifying the torque of the device, it transmits the external input power to the transmission system to effectively drive the operated object, ensuring that the device operates safely and effectively as needed. The power source can be an existing product on the market, such as a handheld electric drill or a hydraulic motor. The device consists of a mounting box 210, a quick connector 211, a thrust bearing 212, an input bevel gear 213, an output bevel gear 214, a linkage transmission shaft 215, and a drive bevel gear 216.

[0038] Specifically, a linkage drive shaft 215 is rotatably mounted inside the mounting box 210. The linkage drive shaft 215 is provided with an output bevel gear 214, which meshes with an input bevel gear 213. The input bevel gear 213 is connected to a quick connector 211 via a rotating shaft.

[0039] The shaft is mounted on the mounting box 210 via a thrust bearing 212.

[0040] The drive bevel gear 216 is coaxially mounted on the linkage transmission shaft 215.

[0041] The transmission mechanism 22 is used to be installed on both sides of the traveling area of ​​the orifice locking beam; the transmission mechanism 22 includes a support rail seat 222, a receiving bevel gear 221 and a transmission screw 220; the receiving bevel gear 221 meshes with the driving bevel gear 216, and the receiving bevel gear 221 is coaxially connected with the transmission screw 220; the transmission screw 220 is rotatably mounted on the support rail seat 222.

[0042] The transmission mechanism 22 can convert and transmit external driving force to the locking beam and cover plate through its own mechanism, thereby realizing the automatic deployment and retraction of the locking beam, the automatic opening and closing of the cover plate, and the effective operation of the fence system at the opening. The cover plate includes a first cover plate 240 and a stacked cover plate 241; the first cover plate 240 includes a mounting hinge seat 240-1, a front support shaft 240-2, and a rear support shaft 240-3. The stacked cover plate 241 includes a drive component mounting groove 240-4, a front support shaft 241-2, and a rear support shaft 241-3.

[0043] The transmission mechanism 22 includes a support rail seat 222, a receiving bevel gear 221, and a transmission screw 220. The support rail seat has a mounting bracket at one end for mounting the transmission screw. Symmetrically arranged near the inside of the orifice are a front support groove 222-1 and a rear support groove 222-2 for the first cover plate. The groove depth L2 of the front support groove 222-1 is greater than the groove depth L3 of the rear support groove 222-2. L2 = L3 + d (width of the support pulley); the overlapping cover plate has a front support groove 222-3 and a rear support groove 222-4, and the groove depth L2 of the front support groove 222-3 is greater than the groove depth L3 of the rear support groove 222-4, with the relationship being L2 = L3 + d (width of the support pulley); the transmission screw 220 is symmetrically machined with positive and negative thread grooves, which cooperate with the transmission connector 23 to realize the opposite movement of the locking beam and the cover plate.

[0044] The cover plate support slide includes a first cover plate front support slide 222-1, a first cover plate rear support slide 222-2, a stacked cover plate front support slide 222-3, and a stacked cover plate rear support slide 222-4. Specifically, the inner side of the support rail seat 222 is provided with the first cover plate front support slide 222-1, the first cover plate rear support slide 222-2, the stacked cover plate front support slide 222-3, and the stacked cover plate rear support slide 222-4.

[0045] The front support groove 222-1 of the first cover plate and the rear support groove 222-2 of the first cover plate are connected, and the groove depth of the front support groove 222-1 of the first cover plate is greater than the groove depth of the rear support groove 222-2 of the first cover plate.

[0046] The front support groove 222-3 and the rear support groove 222-4 of the stacked cover plate are connected. The groove depth of the front support groove 222-3 of the stacked cover plate is greater than the groove depth of the rear support groove 222-4 of the stacked cover plate.

[0047] The support rollers on the front support shaft 240-2 of the first cover plate are adapted to the front support groove 222-1 of the first cover plate. The support rollers on the rear support groove 222-2 of the first cover plate are adapted to the rear support groove 222-2 of the first cover plate. The support rollers on the front support shaft 241-2 of the stacked cover plate are adapted to the front support groove 222-3 of the stacked cover plate. The support rollers on the rear support shaft 241-3 of the stacked cover plate are adapted to the rear support groove 222-4 of the stacked cover plate.

[0048] The transmission connector 23 includes a locking beam connecting screw sleeve 230, which is threadedly engaged with the transmission lead screw 220 and is used to connect with the locking beam.

[0049] The transmission connector 23 also includes a cover plate connecting screw sleeve 231 and a cover plate connector 232; the cover plate connecting screw sleeve 231 is threadedly engaged with the transmission lead screw 220, and the cover plate connecting screw sleeve 231 is connected to the cover plate connector 232 through the mounting rod 231-2. The cover plate connector 232 is provided with a mounting hole 232-1; the mounting hole 232-1 is used for hinged with the cover plate.

[0050] The transmission connector 23, a custom-made product, is used to securely and effectively connect the locking beam and cover plate to the transmission mechanism on site. It mainly includes a locking beam connecting sleeve 230, a cover plate connecting sleeve 231, and a cover plate connector 232. The locking beam connecting sleeve 230 is cuboid in shape with a thread 230-1 machined in the middle, which can be used with the transmission screw 220. Its body is welded to the locking beam stiffener. The cover plate connecting sleeve 231 is also cuboid in shape with a thread 231-1 machined in the middle, which can be used with the transmission screw 220 to transmit force. It has a mounting rod 231-2 on its side, which can be connected with the cover plate connector 232. The cover plate connector 232 is a plate structure with mounting holes 232-1 machined at both ends. The upper end connects to the mounting rod 231-2 of the cover plate connecting sleeve 231, and the lower end connects to the mounting hinge seat 240-1 of the first cover plate, achieving an effective connection between the first cover plate 240 and the transmission mechanism 22.

[0051] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. An automatic opening and closing transmission mechanism for an orifice cover plate, characterized by: It includes a power receiving device (21), a transmission mechanism (22) and a transmission connector (23); the power receiving device (21) is in transmission cooperation with the transmission mechanism (22), and the transmission mechanism (22) is in transmission cooperation with the transmission connector (23); multiple transmission connectors (23) are installed on the transmission mechanism (22).

2. An automatic opening and closing transmission mechanism for an orifice cover plate according to claim 1, characterized in that: The power receiving device (21) includes a mounting box (210), a quick connector (211), a thrust bearing (212), an input bevel gear (213), an output bevel gear (214), and a linkage drive shaft (215). The mounting box (210) rotatably mounts a linkage drive shaft (215), which is provided with an output bevel gear (214). The output bevel gear (214) meshes with an input bevel gear (213). The input bevel gear (213) is connected to a quick connector (211) via a rotating shaft.

3. An automatic opening and closing transmission mechanism for an orifice cover plate according to claim 2, characterized in that: The shaft is mounted on the mounting box (210) via a thrust bearing (212).

4. An automatic opening and closing transmission mechanism for an orifice cover plate according to claim 1, characterized in that: The power receiving device (21) also includes a drive bevel gear (216), which is coaxially mounted on the linkage transmission shaft (215).

5. An automatic opening and closing transmission mechanism for an orifice cover plate according to claim 4, characterized in that: The transmission mechanism (22) is used to be installed on both sides of the traveling area of ​​the orifice locking beam; the transmission mechanism (22) includes a support rail seat (222), a receiving bevel gear (221) and a transmission screw (220). The receiving bevel gear (221) meshes with the driving bevel gear (216), and the receiving bevel gear (221) is coaxially connected with the transmission screw (220); the transmission screw (220) is rotatably mounted on the support rail seat (222).

6. An automatic opening and closing transmission mechanism for an orifice cover plate according to claim 1, characterized in that: The transmission connector (23) includes a locking beam connecting screw sleeve (230), which is threadedly engaged with the transmission lead screw (220). The locking beam connecting screw sleeve (230) is used to connect with the locking beam.

7. An automatic opening and closing transmission mechanism for an orifice cover plate according to claim 6, characterized in that: The transmission connector (23) also includes a cover plate connecting screw sleeve (231) and a cover plate connector (232); the cover plate connecting screw sleeve (231) is threadedly engaged with the transmission screw (220), and the cover plate connecting screw sleeve (231) is connected to the cover plate connector (232) through the mounting rod (231-2). The cover plate connector (232) is provided with a mounting hole (232-1); the mounting hole (232-1) is used for hinged with the cover plate.

8. An automatic opening and closing transmission mechanism for an orifice cover plate according to claim 1, characterized in that: The support track seat (222) is provided with a cover plate support groove adapted to the support travel pulley, and the support travel pulley is used to slide on the cover plate support groove; the shape of the cover plate support groove is adapted to the travel trajectory of the first cover plate (240) and the superimposed cover plate (241).

9. An automatic opening and closing transmission mechanism for an orifice cover plate according to claim 8, characterized in that: The cover plate support groove includes a first front cover plate support groove (222-1) and a first rear cover plate support groove (222-2). The front support groove (222-1) of the first cover plate and the rear support groove (222-2) of the first cover plate are connected. The groove depth of the front support groove (222-1) of the first cover plate is greater than the groove depth of the rear support groove (222-2) of the first cover plate.

10. An automatic opening and closing transmission mechanism for an orifice cover plate according to claim 9, characterized in that: The cover plate support groove also includes a front support groove (222-3) and a rear support groove (222-4) for the superimposed cover plate. The front support groove (222-3) and the rear support groove (222-4) of the stacked cover plate are connected. The groove depth of the front support groove (222-3) of the stacked cover plate is greater than the groove depth of the rear support groove (222-4).

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