Drive connection structure of drilling equipment

Abstract

The utility model relates to the technical field of drilling equipment, and discloses a drilling equipment driving connection structure which comprises a motor and a speed reducer, an output shaft of the motor is in key connection with an input shaft of the speed reducer, a connecting disc is arranged between an output end cover of the motor and an input end cover of the speed reducer, and a central through hole is formed in the center of the connecting disc; the connecting disc is connected with the output end cover through a first connecting bolt, the connecting disc is connected with the input end cover through a second connecting bolt, the first connecting bolt and the second connecting bolt are arranged in a first through hole and a second through hole of the connecting disc respectively, and the first through hole is a countersunk head through hole, so that interference between the first connecting bolt and the input end cover is avoided. According to the drilling equipment driving connection structure, the motor and the speed reducer are connected through the connecting disc, the output shaft of the motor and the input shaft of the speed reducer are in key connection, the connection structure is simple, cost is low, installation is convenient and fast, and the driving structure is small in size, small in mass and compact in structure.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling equipment, and more specifically, to a driving connection structure of drilling equipment. Background Art

[0002] Permanent magnet synchronous motors have the advantages of high efficiency, energy saving, high cost performance, etc., and are more and more widely used in the driving structures of drilling equipment.

[0003] However, the rotational speeds of permanent magnet synchronous motors are generally high, and it is necessary to drive the drilling equipment after deceleration by a speed reducer. At present, the motor and the speed reducer are mostly connected by a universal shaft. Although the installation difficulty of the universal shaft is low, the volume of the universal shaft is large, which will increase the overall size of the driving structure, and the transmission efficiency is low.

[0004] In summary, how to provide a driving connection structure with convenient installation and reliable performance is an urgent problem to be solved by those skilled in the art at present. Content of the Utility Model

[0005] In view of this, the purpose of the utility model is to provide a driving connection structure of drilling equipment, which uses a connection disk to connect the motor and the speed reducer. The output shaft of the motor and the input shaft of the speed reducer are key-connected. The connection structure is simple, has a low cost, is convenient to install, and makes the driving structure have a small volume and mass and a compact structure.

[0006] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0007] A driving connection structure of drilling equipment includes a motor and a speed reducer. The output shaft of the motor is key-connected to the input shaft of the speed reducer. A connection disk is provided between the output end cover of the motor and the input end cover of the speed reducer. A central through hole is provided in the center of the connection disk;

[0008] The connection disk is connected to the output end cover by a first connection bolt, and the connection disk is connected to the input end cover by a second connection bolt. The first connection bolt and the second connection bolt are respectively arranged in a first through hole and a second through hole of the connection disk. The first through hole is a counterbore through hole to prevent the first connection bolt from interfering with the input end cover.

[0009] Preferably, the output shaft of the motor is an external spline shaft, and the input shaft of the speed reducer is an internal spline sleeve that is connected in cooperation with the external spline shaft. The motor and the speed reducer are connected by splines.

[0010] Preferably, a counterbore part is provided on one side of the first through hole relatively close to the input end cover, and there is a gap between the inner wall surface of the counterbore part and the bolt head of the first connection bolt.

[0011] Preferably, the first connecting bolt includes an internal hexagon head bolt and a cross bolt to reduce the inner diameter of the countersunk head portion.

[0012] Preferably, the first connecting bolts are evenly distributed along the circumferential direction of the output end cover, and the second connecting bolts are evenly distributed along the circumferential direction of the input end cover.

[0013] Preferably, a first sealing ring is provided between the connecting disk and the output end cover, and the first sealing ring is arranged in the first sealing groove of the connecting disk. A second sealing ring is provided between the connecting disk and the input end cover, and the second sealing ring is arranged in the second sealing groove of the connecting disk.

[0014] Preferably, the first sealing groove includes an annular groove coaxially arranged with the central through hole, and the first through holes are evenly distributed along the circumferential direction of the first sealing groove.

[0015] Preferably, the second sealing groove includes an annular groove coaxially arranged with the central through hole, and the second through holes are evenly distributed along the circumferential direction of the first sealing groove.

[0016] Preferably, a third sealing ring is further included. The third sealing ring is arranged between the connecting disk and the input end cover, the third sealing ring is sleeved outside the first connecting bolt, and the third sealing groove of the connecting disk is coaxially arranged with the first through hole.

[0017] Preferably, a third sealing ring is further included. The third sealing ring is arranged between the connecting disk and the input end cover, the third sealing ring is coaxially arranged with the central through hole, the third sealing ring is provided with a through hole for the first connecting bolt to pass through, and the third sealing ring is provided with a sealing protrusion clamped in the first through hole.

[0018] The driving connection structure of the drilling equipment provided by the present utility model connects the connecting disk to the output end cover of the motor and the input end cover of the speed reducer through bolt connections respectively, so as to connect the motor and the speed reducer. At the same time, the output shaft of the motor and the input shaft of the speed reducer are key-connected. The connection structure is simple, the cost is low, the installation is convenient, and the axial dimension of the driving connection structure is effectively reduced, making the driving structure small in volume and mass and compact in structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0020] Figure 1 A top view schematic diagram of a specific embodiment of the driving connection structure of the drilling equipment provided by the present utility model;

[0021] Figure 2 is Figure 1 a partial enlarged view of;

[0022] Figure 3 is Figure 1 a front view schematic diagram of.

[0023] Figure 1 - Figure 2 In:

[0024] 1 - Motor; 11 - Output end cover; 12 - Output shaft; 2 - Connection plate; 21 - First through hole; 22 - Second through hole; 3 - Reducer; 31 - Input end cover; 32 - Input shaft; 4 - First connecting bolt; 5 - Second connecting bolt. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] The core of the present utility model is to provide a driving connection structure for drilling equipment. The motor and the reducer are connected by a connection plate, and the output shaft of the motor and the input shaft of the reducer are key-connected. The connection structure is simple, the cost is low, the installation is convenient, and the volume and mass of the driving structure are small and the structure is compact.

[0027] The driving connection structure for drilling equipment provided by the present utility model includes a motor 1 and a reducer 3. The output shaft 12 of the motor 1 is key-connected to the input shaft 32 of the reducer 3. A connection plate 2 is provided between the output end cover 11 of the motor 1 and the input end cover 31 of the reducer 3. A central through hole is provided in the center of the connection plate 2;

[0028] The connection plate 2 is connected to the output end cover 11 by a first connecting bolt 4, and the connection plate 2 is connected to the input end cover 31 by a second connecting bolt 5. The first connecting bolt 4 and the second connecting bolt 5 are respectively arranged in the first through hole 21 and the second through hole 22 of the connection plate 2. The first through hole 21 is a countersunk through hole to prevent the first connecting bolt 4 from interfering with the input end cover 31.

[0029] Among them, the specific types and models of the motor 1 and the reducer 3 are determined with reference to the prior art according to the driving requirements of the drilling equipment in actual production, and will not be elaborated here;

[0030] After the types and models of the motor 1 and the speed reducer 3 are determined, the sizes and positions of the first through hole 21 and the second through hole 22 on the connecting plate 2 can be determined. Then, based on the structural strength requirements of the connecting plate 2 and the connection strength requirements between the connecting plate 2 and the output end cover 11 and the input end cover 31, the size of the connecting plate 2 can be checked and calculated.

[0031] The specific quantities, sizes, and distributions of the first connecting bolt 4 and the second connecting bolt 5 are determined according to the quantities, sizes, and distributions of the bolt holes on the output end cover 11 and the input end cover 31 in actual production;

[0032] In order to make the pressing forces received by the output end cover 11 and the input end cover 31 relatively uniform, it is preferably set that the first connecting bolts 4 are evenly distributed along the circumferential direction of the output end cover 11, and the second connecting bolts 5 are evenly distributed along the circumferential direction of the input end cover 31.

[0033] A central through hole is provided in the center of the connecting plate 2, and the inner diameter of the central through hole is much larger than the diameters of the output shaft of the motor 1 and the input shaft of the speed reducer 3, so as to reserve sufficient space for the shaft system connection of the motor 1 and the speed reducer 3 and avoid interference between the connecting plate 2 and the shaft system.

[0034] The first through hole 21 is provided on the inner side of the connecting plate 2 relatively close to the axis, and the first through hole 21 is connected to the output end cover 11 of the motor 1 through the first connecting bolt 4. The second through hole 22 is provided on the outer side of the connecting plate 2 relatively far from the axis, and the second through hole 22 is connected to the input end cover 31 of the speed reducer 3 through the second connecting bolt 5.

[0035] In order to avoid interference between the first connecting bolt 4 and the input end cover 31 of the speed reducer 3, the first through hole 21 is set as a countersunk through hole, and a countersunk head part is provided on the side of the first through hole 21 relatively close to the input end cover 31, and the countersunk head part is used to accommodate the bolt head of the first connecting bolt 4.

[0036] In order to facilitate the installation of the first connecting bolt 4, a gap needs to exist between the inner wall surface of the countersunk head part of the first through hole 21 and the bolt head of the first connecting bolt 4, so as to reserve the installation space required for screwing the first connecting bolt 4;

[0037] However, if the size of the first through hole 21 is too large, it will affect the structural strength of the connecting plate 2. Therefore, it is preferably set that the first connecting bolt 4 includes internal bolts such as an internal hexagon head bolt and a cross bolt, and the installation of the first connecting bolt 4 can be completed without reserving too much gap between the inner wall surface of the countersunk head part and the bolt head, which is beneficial to reducing the inner diameter of the countersunk head part.

[0038] The second connecting bolt 5 is arranged on the outer side of the output end cover 11 of the motor 1 and is not affected by the output end cover 11. Therefore, the second connecting bolt 5 can be set as a countersunk head bolt or a common bolt. It should be noted that the axis of the second through hole 22 needs to be at a certain distance from the output end cover 11 of the motor 1 to ensure the installation space for the second connecting bolt 5.

[0039] During installation, first, use the first connecting bolt 4 to fix the connecting disk 2 to the output end cover 11 of the motor 1; then connect the output shaft 12 of the motor 1 and the input shaft 32 of the speed reducer 3 through a key connection method to complete the connection of the shafting; finally, use the second connecting bolt 5 to fix the connecting disk 2 to the input end cover 31 of the speed reducer 3 to complete the assembly of the entire drive connection structure.

[0040] In this embodiment, the connecting disk 2 is connected to the output end cover 11 of the motor 1 and the input end cover 31 of the speed reducer 3 respectively through bolt connections to connect the motor 1 and the speed reducer 3. At the same time, the output shaft 12 of the motor 1 and the input shaft 32 of the speed reducer 3 are key-connected. The connection structure is simple, the cost is low, the installation is convenient, and the axial dimension of the drive connection structure is effectively reduced, making the volume and mass of the drive structure small and the structure compact.

[0041] In order to improve the connection strength and stability of the key connection, preferably, the output shaft 12 of the motor 1 can be set as an external spline shaft, and the input shaft 32 of the speed reducer 3 can be set as an internal spline sleeve that is connected in cooperation with the external spline shaft, so that the motor 1 and the speed reducer 3 are connected through splines. Compared with the flat key connection, the spline connection has higher connection strength, stronger connection stability and reliability.

[0042] On the basis of the above embodiment, in order to prevent dust and the like from entering the shafting, a first sealing ring is provided between the connecting disk 2 and the output end cover 11. The first sealing ring is arranged in the first sealing groove of the connecting disk 2, and the first sealing ring is used to seal the gap between the connecting disk 2 and the output end cover 11;

[0043] A second sealing ring is provided between the connecting disk 2 and the input end cover 31. The second sealing ring is arranged in the second sealing groove of the connecting disk 2, and the second sealing groove is used to seal the gap between the connecting disk 2 and the input end cover 31.

[0044] The first sealing groove is provided on the end face of the connecting disk 2 relatively close to the output end cover 11. The first sealing ring can be sleeved outside the first connecting bolt 4. At this time, the first sealing groove is coaxially arranged with the first through hole 21, and there may be a gap between the first sealing rings of two adjacent first connecting bolts 4;

[0045] In order to ensure the sealing effect, preferably, the first sealing groove is set as an annular groove coaxially arranged with the central through hole of the connecting disk 2, and the first through holes 21 are uniformly distributed along the circumferential direction of the first sealing groove.

[0046] Similarly, in order to ensure the sealing effect between the connecting disk 2 and the input end cover 31, it is preferably set that the second sealing groove includes an annular groove coaxially arranged with the central through hole, and the second through holes 22 are evenly distributed along the circumferential direction of the second sealing groove.

[0047] The dimensions such as the depth and width of both the first sealing groove and the second sealing groove, as well as the specific materials and dimensions of both the first sealing ring and the second sealing ring, are determined according to the sealing requirements between the connecting disk 2 and the output end cover 11 of the motor 1 and the sealing requirements between the connecting disk 2 and the input end cover 31 of the speed reducer 3 in actual production.

[0048] In this embodiment, a first sealing ring is provided between the connecting disk 2 and the output end cover 11 of the motor 1, and a second sealing ring is provided between the connecting disk 2 and the input end cover 31 of the speed reducer 3, which can effectively seal the gaps between the connecting disk 2 and the output end cover 11 and the input end cover 31, and improve the sealing performance of the drive connection structure.

[0049] In addition, both the first sealing ring and the second sealing ring are installed on the connecting disk 2, avoiding secondary processing of the output end cover 11 of the motor 1 and the input end cover 31 of the speed reducer 3, and the installation is convenient.

[0050] On the basis of the above embodiments, in order to further improve the sealing performance between the connecting disk 2 and the input end cover 31 of the speed reducer 3, a third sealing ring can also be provided. The third sealing ring is arranged between the connecting disk 2 and the input end cover 31, the third sealing ring is sleeved outside the first connecting bolt 4, and the third sealing groove of the connecting disk 2 is coaxially arranged with the first through hole 21.

[0051] At this time, the third sealing ring is mainly used to seal the counterbore of the first through hole 21. Since it is difficult to have a gap between the third sealing rings sleeved outside two adjacent first connecting bolts 4, its sealing performance is relatively weak.

[0052] In addition, the third sealing ring can also be arranged coaxially with the central through hole. The third sealing ring is provided with a through hole for the first connecting bolt 4 to pass through, and the third sealing ring is provided with a sealing protrusion clamped in the first through hole 21.

[0053] During installation, first make the first connecting bolt 4 pass through the first through hole 21 and the through hole of the first sealing ring in sequence and then connect with the threaded hole of the output end cover 11, and fix the connecting disk 2 on the output end cover 11 of the motor 1 by using the first connecting bolt 4; then connect the output shaft 12 of the motor 1 and the input shaft 32 of the speed reducer 3 through a key connection method to complete the connection of the shafting; finally, install the first sealing ring into the first sealing groove and install the third sealing ring into the third sealing groove, and fix the connecting disk 2 on the input end cover 31 of the speed reducer 3 by using the second connecting bolt 5 to complete the assembly of the entire drive connection structure.

[0054] It should be noted that the first connecting bolt 4 and the second connecting bolt 5, the first through hole 21 and the second through hole 22, the first sealing ring, the second sealing ring and the third sealing ring, and the first and second in the first sealing groove and the second sealing groove, and the third are only used to distinguish different positions and do not include any limitation on the order.

[0055] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0056] The driving connection structure of the drilling equipment provided by the present utility model has been introduced in detail above. Specific examples are used herein to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A driving connection structure of a drilling equipment, comprising a motor (1) and a reducer (3), characterized in that, The output shaft (12) of the motor (1) is key-connected to the input shaft (32) of the speed reducer (3). A connection disk (2) is provided between the output end cover (11) of the motor (1) and the input end cover (31) of the speed reducer (3). A central through hole is provided at the center of the connection disk (2). The connection disk (2) is connected to the output end cover (11) by a first connection bolt (4), and the connection disk (2) is connected to the input end cover (31) by a second connection bolt (5). The first connection bolt (4) and the second connection bolt (5) are respectively arranged in a first through hole (21) and a second through hole (22) of the connection disk (2). The first through hole (21) is a countersunk through hole to prevent the first connection bolt (4) from interfering with the input end cover (31).

2. The driving connection structure of the drilling equipment according to claim 1, characterized in that The output shaft (12) of the motor (1) is an external spline shaft, and the input shaft (32) of the speed reducer (3) is an internal spline sleeve that is connected in a matching manner with the external spline shaft. The motor (1) and the speed reducer (3) are connected by splines.

3. The driving connection structure of the drilling equipment according to claim 1, characterized in that, A countersunk head portion is provided on the side of the first through hole (21) relatively close to the input end cover (31), and there is a gap between the inner wall surface of the countersunk head portion and the bolt head of the first connection bolt (4).

4. The driving connection structure of the drilling equipment according to claim 3, wherein, The first connection bolt (4) includes an internal hexagonal head bolt and a cross bolt to reduce the inner diameter of the countersunk head portion.

5. The driving connection structure of the drilling equipment according to any one of claims 1-4, characterized in that, The first connection bolts (4) are evenly distributed along the circumferential direction of the output end cover (11), and the second connection bolts (5) are evenly distributed along the circumferential direction of the input end cover (31).

6. The driving connection structure of the drilling equipment according to any one of claims 1-4, characterized in that, A first sealing ring is provided between the connection disk (2) and the output end cover (11). The first sealing ring is arranged in a first sealing groove of the connection disk (2). A second sealing ring is provided between the connection disk (2) and the input end cover (31). The second sealing ring is arranged in a second sealing groove of the connection disk (2).

7. The driving connection structure of the drilling equipment according to claim 6, characterized in that, The first sealing groove includes an annular groove coaxially arranged with the central through hole, and the first through holes (21) are evenly distributed along the circumferential direction of the first sealing groove.

8. The drive connection structure of the drilling equipment according to claim 6, characterized in that, The second sealing groove includes an annular groove coaxially arranged with the central through hole, and the second through holes (22) are evenly distributed along the circumferential direction of the first sealing groove.

9. The drive connection structure of the drilling equipment according to claim 8, wherein, A third sealing ring is further included. The third sealing ring is arranged between the connection disk (2) and the input end cover (31). The third sealing ring is sleeved outside the first connection bolt (4), and the third sealing groove of the connection disk (2) is coaxially arranged with the first through hole (21).

10. The driving connection structure of the drilling equipment according to claim 8, characterized in that, A third sealing ring is further included. The third sealing ring is arranged between the connection disk (2) and the input end cover (31). The third sealing ring is coaxially arranged with the central through hole. The third sealing ring is provided with a through hole for the first connection bolt (4) to pass through, and the third sealing ring is provided with a sealing protrusion snap-fitted in the first through hole (21).

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