Hard connection device of mining narrow gauge vehicle

Abstract

The utility model relates to a hard connecting device of a mining narrow gauge vehicle, and belongs to the technical field of connecting devices. Comprising a connector, a connecting rod and a connecting cylinder, the connecting cylinder is of a cylindrical structure with openings in the two ends, a universal head is fixedly arranged on the connector, the universal head on the connector extends into the connecting cylinder from the interior of the opening in one end of the connecting cylinder, and the end of the connecting rod is fixedly inserted into the interior of the opening in the other end of the connecting cylinder; the problem that the axial size of a connecting cylinder of an existing mining flat car connecting device is too large is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of connecting device, specifically relates to a hard connecting device of mine narrow gauge vehicle. BACKGROUND

[0002] The existing mine vehicle connecting device, such as " CN 218661194 U mine flat car connecting device", sets up universal head on connecting rod, sets up connecting cylinder and connecting head as a whole, and this structure leads to the axial dimension of connecting cylinder being too large, and when the connecting device works for a long time, universal head is easy to interfere with threaded section, causing the inconvenience of connecting device. CONTENT OF UTILITY MODEL

[0003] The utility model overcomes the insufficient of prior art, and provides a hard connecting device of mine narrow gauge vehicle, which solves the problem of the axial dimension of the connecting cylinder of the existing mine flat car connecting device being too large.

[0004] In order to achieve the above purpose, the utility model is realized through the following technical schemes.

[0005] A hard connecting device of mine narrow gauge vehicle, including connecting head, connecting rod, connecting cylinder, the connecting cylinder is the cylindrical structure of two open ends, the universal head is fixedly arranged on the connecting head, the universal head on the connecting head extends into the inside of the connecting cylinder from one end opening of the connecting cylinder, and the end of the connecting rod is fixedly inserted into the other end opening inside of the connecting cylinder.

[0006] Further, the two end openings of the connecting cylinder are respectively the insertion port and the fixed port, the inner diameter of the insertion port is less than the inner diameter of the fixed port, and the insertion port and the fixed port are connected in the inside.

[0007] Further, the insertion port has three structure forms, which are cylindrical via hole, conical via hole and cylindrical and conical combined form via hole, when the insertion port is the cylindrical via hole, the inner diameters of both ends of the insertion port remain the same, when the insertion port is the conical via hole, the inner diameter of the inner side one end of the conical via hole is less than that of the outer side one end, when the insertion port is the cylindrical and conical combined form via hole, it is composed of the transition connection of the cylindrical via hole and the conical via hole, the cylindrical via hole is located at the inner side one end of the insertion port, the conical via hole is located at the outer side one end of the insertion port, the inner diameter of the inner side one end of the conical via hole is less than that of the outer side one end, and the inner diameter of the inner side one end of the conical via hole is equal to that of the cylindrical via hole.

[0008] Further, the fixed mouth is sequentially provided with an inner side hemispherical section, an inner side conical section and an inner side cylindrical section which are connected in sequence in the direction away from the plug-in port, the inner wall of the inner side hemispherical section is a hemispherical structure, the inner wall of the inner side conical section is a conical structure, and the inner wall of the inner side cylindrical section is a cylindrical structure, the inner diameter of the inner side hemispherical section near the plug-in port is smaller than the inner diameter of the inner side hemispherical section away from the plug-in port, the inner diameter of the inner side conical section near the plug-in port is smaller than the inner diameter of the inner side conical section away from the plug-in port, the inner diameter of the inner side conical section near the plug-in port is equal to the inner diameter of the inner side hemispherical section away from the plug-in port, and the inner diameter of the inner side cylindrical section is equal to the inner diameter of the inner side conical section away from the plug-in port.

[0009] Further, the connecting head comprises a connecting column and connecting plates, two connecting plates are fixedly arranged on one end of the connecting column and parallel to each other, and one connecting through hole is arranged on each connecting plate; the end of the connecting column away from the connecting plates penetrates through the plug-in port of the connecting barrel and extends into the fixed mouth of the connecting barrel, and the outer diameter of the connecting column is smaller than the minimum outer diameter of the plug-in port.

[0010] Further, the universal head is fixedly sleeved on the outer side of the connecting column, the end of the connecting column away from the connecting plates is screwed into the universal head and welded with the universal head; the outer wall of the universal head comprises an outer side hemispherical section and an outer side conical section which are connected in sequence, the outer diameter of the end of the outer side hemispherical section near the connecting plates is smaller than the outer diameter of the end of the outer side hemispherical section away from the connecting plates, the outer diameter of the end of the outer side conical section near the connecting plates is equal to the outer diameter of the end of the outer side hemispherical section away from the connecting plates, and the outer diameter of the end of the outer side conical section near the connecting plates is greater than the outer diameter of the end of the outer side conical section away from the connecting plates; the outer side hemispherical section of the universal head is located in the inner side hemispherical section of the fixed mouth, the outer side conical section of the universal head is located in the inner side conical section of the fixed mouth, and the hemispherical surface on the outer side of the outer side hemispherical section of the universal head is in sliding contact with the hemispherical surface on the inner side of the inner side hemispherical section of the fixed mouth.

[0011] Further, the universal head only comprises the outer side hemispherical section and does not comprise the outer side conical section, the outer side hemispherical section of the universal head is located in the inner side hemispherical section of the fixed mouth, and the hemispherical surface on the outer side of the outer side hemispherical section of the universal head is in sliding contact with the hemispherical surface on the inner side of the inner side hemispherical section of the fixed mouth.

[0012] Further, the end of the connecting rod is directly screwed into the inner side cylindrical section of the fixed mouth of the connecting barrel and welded with the fixed mouth of the connecting barrel; or a connecting sleeve is fixedly sleeved on the outer side of the end of the connecting rod, the connecting sleeve is screwed on the outer side of the end of the connecting rod and welded with the connecting rod, the connecting sleeve is screwed into the inner side cylindrical section of the fixed mouth of the connecting barrel and welded with the fixed mouth of the connecting barrel.

[0013] Further, an oil injection hole is arranged on the side wall of the inner cylindrical section of the fixing port of the connecting cylinder, and an oil injection plug is screwed on the oil injection hole.

[0014] Further, the connecting rod is in a tubular structure, a spring groove is arranged at the end of the connecting rod, a compression spring is arranged in the spring groove, one end of the compression spring is in contact with the universal head, and the other end of the compression spring is in contact with the end face of the spring groove.

[0015] The present application has the following beneficial effects compared with the prior art:

[0016] (1) The hard connecting device for a mine narrow-gauge vehicle shortens the axial dimension of the universal head, thereby reducing the axial dimension of the connecting cylinder, and thickening the rear section of the universal head, so that the radial tensile strength is enhanced.

[0017] (2) The hard connecting device for a mine narrow-gauge vehicle provided by the present application omits the outer conical section of the universal head in the case of low tensile strength, so that the axial dimension of the connecting cylinder is further reduced.

[0018] (3) The hard connecting device for a mine narrow-gauge vehicle provided by the present application is provided with an oil injection hole on the side wall of the connecting cylinder, lubricating oil is injected into the connecting cylinder, the contact surface between the universal head and the connecting cylinder is lubricated by the lubricating oil, and thus the wear is delayed.

[0019] (4) The hard connecting device for a mine narrow-gauge vehicle provided by the present application is provided with a compression spring between the universal head and the connecting rod, and the impact damage of the hard connecting device and the impact force of the vehicle caused by the impact of the transport vehicle are buffered by the compression spring. BRIEF DESCRIPTION OF DRAWINGS

[0020] The present application will be further described in detail below with reference to the drawings:

[0021] Figure 1 is a structural schematic view of example one;

[0022] Figure 2 is a structural schematic view of example two;

[0023] Figure 3 is a structural schematic view of the plug-in port being a conical via hole;

[0024] Figure 4 is a structural schematic view of the plug-in port being a cylindrical via hole;

[0025] Figure 5 is a structural schematic view of the plug-in port being a combination of a cylindrical via hole and a conical via hole;

[0026] Figure 6 is a structural schematic diagram of example three, example four;

[0027] Figure 7 is a structural schematic diagram of example five;

[0028] Wherein, 1 is a connecting head, 2 is a connecting rod, 3 is a connecting cylinder, 4 is a universal head, 5 is a plug-in interface, 6 is a fixed port, 7 is a cylindrical via, 8 is a conical via, 9 is a cylindrical and conical combined via, 10 is an inner side hemispherical section, 11 is an inner side conical section, 12 is an inner side cylindrical section, 13 is a connecting plate, 14 is a connecting column, 15 is an outer side hemispherical section, 16 is an outer side conical section, 17 is a connecting sleeve, 18 is an oil injection port, 19 is an oil injection plug, and 20 is a compression spring. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model more clear and obvious, the utility model is further described in detail in combination with examples and drawings. It should be understood that the specific examples described herein are only used to explain the utility model and are not used to limit the utility model. The technical solutions of the utility model are described in detail below in combination with examples and drawings, but the protection scope is not limited by this.

[0030] Example one

[0031] As Figure 1 shown, the embodiment provides a hard connecting device of a mine narrow-gauge vehicle, which comprises a connecting head 1, a connecting rod 2 and a connecting cylinder 3. The connecting cylinder 3 is a cylindrical structure with two open ends. The connecting head 1 is fixedly provided with a universal head 4. The universal head 4 on the connecting head 1 extends into the connecting cylinder 3 from the inside of one end opening of the connecting cylinder 3. The end of the connecting rod 2 is fixedly plugged into the inside of the other end opening of the connecting cylinder 3.

[0032] The two end openings of the connecting cylinder 3 are respectively a plug-in interface 5 and a fixed port 6. The inner diameter of the plug-in interface 5 is smaller than that of the fixed port 6, and the plug-in interface 5 and the fixed port 6 are connected in communication.

[0033] As Figure 3 , 4As shown in FIG. 5, the plug-in interface 5 has three structural forms, namely a cylindrical via 7, a conical via 8, and a cylindrical and conical combined via 9. When the plug-in interface 5 is the cylindrical via 7, the inner diameters of both ends of the plug-in interface 5 remain the same. When the plug-in interface 5 is the conical via 8, the inner diameter of the inner end of the conical via 8 is smaller than that of the outer end. When the plug-in interface 5 is the cylindrical and conical combined via 9, it is formed by the transition connection of the cylindrical via 7 and the conical via 8. The inner end of the cylindrical via 7 is located at the inner end of the plug-in interface 5, and the conical via 8 is located at the outer end of the plug-in interface 5. The inner diameter of the inner end of the conical via 8 is smaller than that of the outer end, and the inner diameter of the inner end of the conical via 8 is equal to the inner diameter of the cylindrical via 7.

[0034] The fixed port 6 is sequentially provided with an inner side hemispherical segment 10, an inner side conical segment 11, and an inner side cylindrical segment 12 in the direction away from the plug-in interface 5. The inner wall of the inner side hemispherical segment 10 is a hemispherical structure, the inner wall of the inner side conical segment 11 is a conical structure, and the inner wall of the inner side cylindrical segment 12 is a cylindrical structure. The inner diameter of the inner end of the inner side hemispherical segment 10 close to the plug-in interface 5 is smaller than that of the outer end away from the plug-in interface 5. The inner diameter of the inner end of the inner side conical segment 11 close to the plug-in interface 5 is smaller than that of the outer end away from the plug-in interface 5. The inner diameter of the inner end of the inner side conical segment 11 close to the plug-in interface 5 is equal to that of the outer end away from the plug-in interface 5. The inner diameter of the inner side cylindrical segment 12 is equal to that of the outer end of the inner side conical segment 11 away from the plug-in interface 5.

[0035] The connecting head 1 comprises a connecting plate 13 and a connecting column 14. One end of the connecting column 14 is fixedly provided with two parallel connecting plates 13. One connecting through hole is arranged on each connecting plate 13, and the two connecting through holes are symmetrically arranged. The end of the connecting column 14 away from the connecting plate 13 penetrates the plug-in interface 5 of the connecting barrel 3 and extends into the inside of the fixed port 6 of the connecting barrel 3. The outer diameter of the connecting column 14 is smaller than the minimum outer diameter of the plug-in interface 5.

[0036] The universal joint 4 is fixedly sleeved on the outer side of the connecting column 14. The universal joint 4 is a cylindrical structure with two open ends. The end of the connecting column 14 away from the connecting plate 13 is screwed into the inside of the universal joint 4, and the connecting column 14 is welded with the universal joint 4, so as to fixedly connect the universal joint 4 with the connecting head 1. The outer wall of the universal joint 4 comprises an outer side hemispherical segment 15 and an outer side conical segment 16 in transition connection. The outer diameter of the inner end of the outer side hemispherical segment 15 close to the connecting plate 13 is smaller than that of the outer end away from the connecting plate 13. The outer diameter of the inner end of the outer side conical segment 16 close to the connecting plate 13 is equal to that of the outer end of the outer side hemispherical segment 15 away from the connecting plate 13. The outer diameter of the inner end of the outer side conical segment 16 close to the connecting plate 13 is greater than that of the outer end away from the connecting plate 13.

[0037] The outer side hemispherical surface section 15 of the universal joint 4 is located inside the inner side hemispherical surface section 10 of the fixed mouth 6, the outer side conical surface section 16 of the universal joint 4 is located inside the inner side conical surface section 11 of the fixed mouth 6, and the hemispherical surface outside the outer side hemispherical surface section 15 of the universal joint 4 is in sliding contact with the hemispherical surface inside the inner side hemispherical surface section 10 of the fixed mouth 6.

[0038] The end of the connecting rod 2 is directly screwed inside the inner side cylindrical section 12 of the fixed mouth 6 of the connecting cylinder 3, and the end of the connecting rod 2 is welded with the fixed mouth 6 of the connecting cylinder 3, so as to fixedly connect the connecting rod 2 with the connecting cylinder 3.

[0039] Embodiment two

[0040] As shown in the figure, the embodiment provides a hard connecting device for a mine narrow-gauge vehicle, and the difference between the embodiment and the first embodiment is as follows: Figure 2 The universal joint 4 only includes the outer side hemispherical surface section 15 and does not include the outer side conical surface section 16, the outer side hemispherical surface section 15 of the universal joint 4 is located inside the inner side hemispherical surface section 10 of the fixed mouth 6, and the hemispherical surface outside the outer side hemispherical surface section 15 of the universal joint 4 is in sliding contact with the hemispherical surface inside the inner side hemispherical surface section 10 of the fixed mouth 6;

[0041] The connecting sleeve 17 is fixedly sleeved outside the end of the connecting rod 2, the connecting sleeve 17 is a cylindrical structure with both ends open, the connecting sleeve 17 is screwed outside the end of the connecting rod 2 and is welded with the connecting rod 2, the connecting sleeve 17 is screwed inside the inner side cylindrical section 12 of the fixed mouth 6 of the connecting cylinder 3 and is welded with the fixed mouth 6 of the connecting cylinder 3, and the connecting rod 2 is fixedly connected with the connecting cylinder 3 through the connecting sleeve 17.

[0042] Embodiment three

[0043] As shown in the figure, the embodiment provides a hard connecting device for a mine narrow-gauge vehicle, and the difference between the embodiment and the first embodiment is as follows:

[0044] Figure 6 The connecting sleeve 17 is fixedly sleeved outside the end of the connecting rod 2, the connecting sleeve 17 is a cylindrical structure with both ends open, the connecting sleeve 17 is screwed outside the end of the connecting rod 2 and is welded with the connecting rod 2, the connecting sleeve 17 is screwed inside the inner side cylindrical section 12 of the fixed mouth 6 of the connecting cylinder 3 and is welded with the fixed mouth 6 of the connecting cylinder 3, and the connecting rod 2 is fixedly connected with the connecting cylinder 3 through the connecting sleeve 17.

[0045] Embodiment four

[0046] As shown in the figure, the embodiment provides a hard connecting device for a mine narrow-gauge vehicle, and the difference between the embodiment and the first embodiment is as follows:

[0047] As shown in the figure, the embodiment provides a hard connecting device for a mine narrow-gauge vehicle, and the difference between the embodiment and the first embodiment is as follows: Figure 6 ​As shown in the embodiment, the hard connecting device of the mine narrow-gauge vehicle is provided, and the embodiment is different from the embodiment one in the following aspects:

[0048] An oil injection hole 18 is arranged on the side wall of the inner cylindrical section 12 of the fixed mouth 6 of the connecting cylinder 3, and an oil injection plug 19 is screwed on the oil injection hole 18, and lubricating oil is injected into the fixed mouth 6 of the connecting cylinder 3, and the contact surface between the universal joint 4 and the connecting cylinder 3 is lubricated by the lubricating oil, so as to delay the abrasion.

[0049] Embodiment five

[0050] As Figure 7 As shown in the embodiment, the hard connecting device of the mine narrow-gauge vehicle is provided, and the embodiment is different from the embodiment one in the following aspects:

[0051] The connecting rod 2 is provided as a tubular structure, a spring groove is arranged at the end of the connecting rod 2, the inner diameter of the spring groove is larger than the inner diameter of the tubular structure, a compression spring 20 is arranged in the spring groove, one end of the compression spring 20 is in contact with the end of the universal joint 4 away from the connecting plate 13, and the other end of the compression spring 20 is in contact with the end face of the spring groove. The impact damage of the hard connecting device and the impact degree of the vehicle when the transport vehicle collides are buffered by the compression spring 20.

[0052] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims instead of the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the involved claims.

Claims

1. A hard connection device for a mine narrow gauge vehicle, characterised in that: The utility model provides a connecting device, including connecting head (1), connecting rod (2), connecting cylinder (3), the connecting cylinder (3) is the cylindrical structure of both ends opening, the universal head (4) of fixedly arranged is provided with on connecting head (1), the universal head (4) on connecting head (1) from the inside of one end opening of connecting cylinder (3) stretches to the inside of connecting cylinder (3), and the end of connecting rod (2) is fixedly inserted in the inside of the other end opening of connecting cylinder (3).

2. A hard connection device for a mine narrow gauge vehicle as claimed in claim 1, characterised in that: The both ends opening of connecting cylinder (3) is fixed mouth (6) and insertion interface (5) respectively, the inner diameter of insertion interface (5) is less than the inner diameter of fixed mouth (6), and insertion interface (5) is communicated with the inside of fixed mouth (6).

3. A hard connection device for a mine narrow gauge vehicle as claimed in claim 2, characterised in that: The insertion interface (5) has three structure forms, is cylindrical via hole (7) respectively, conical via hole (8), cylindrical and conical combination form via hole (9), when the insertion interface (5) is cylindrical via hole (7), the inner diameter of both ends of insertion interface (5) keeps same, when the insertion interface (5) is conical via hole (8), the inner diameter of one end inside of conical via hole (8) is less than the inner diameter of one end outside, when the insertion interface (5) is cylindrical and conical combination form via hole (9), is transitionally connected by cylindrical via hole (7) and conical via hole (8), one end inside of conical via hole (8) is located at the insertion interface (5) of cylindrical via hole (7), and one end outside of conical via hole (8) is located at the insertion interface (5), and the inner diameter of one end inside of conical via hole (8) is less than the inner diameter of one end outside, and the inner diameter of one end inside of conical via hole (8) is equal to the inner diameter of cylindrical via hole (7).

4. A hard connection device for a mine narrow gauge vehicle as claimed in claim 2, characterised in that: The fixed mouth (6) is sequentially provided with inside hemispherical surface section (10), inside conical surface section (11), inside cylindrical section (12) of transitionally connected along the direction of away from insertion interface (5), the inner wall of inside hemispherical surface section (10) is hemispherical surface structure, the inner wall of inside conical surface section (11) is conical surface structure, the inner wall of inside cylindrical section (12) is cylindrical surface structure, the inner diameter of one end inside of inside hemispherical surface section (10) is less than the inner diameter of one end far from insertion interface (5) of hemispherical section, the inner diameter of one end inside of inside conical surface section (11) is less than the inner diameter of one end far from insertion interface (5) of inside conical surface section (11), the inner diameter of one end inside of inside conical surface section (11) is equal to the inner diameter of one end far from insertion interface (5) of inside hemispherical surface section (10), and the inner diameter of inside cylindrical section (12) is equal to the inner diameter of one end far from insertion interface (5) of inside conical surface section (11).

5. A hard connection device for a mine narrow gauge vehicle as claimed in claim 4, characterised in that: The connecting head (1) includes connecting plate (13), connecting column (14), and one end of connecting column (14) is fixedly provided with two mutually parallel connecting plates (13), and one connecting through hole is arranged on each connecting plate (13) respectively, one end of connecting column (14) away from connecting plate (13) passes through the insertion interface (5) of connecting cylinder (3) and stretches to the inside of fixed mouth (6) of connecting cylinder (3), and the outer diameter of connecting column (14) is less than the minimum outer diameter of insertion interface (5).

6. A hard connection device for a mine narrow gauge vehicle as claimed in claim 5, characterised in that: The universal joint (4) is fixedly sleeved on the outer side of the connecting column (14), the connecting column (14) is screwed in the interior of the universal joint (4) and is welded with the universal joint (4) at the end away from the connecting plate (13); the outer wall of the universal joint (4) comprises an outer side hemispherical surface section (15) and an outer side conical surface section (16) which are connected in transition, the outer diameter of the end of the outer side hemispherical surface section (15) close to the connecting plate (13) is smaller than the outer diameter of the end of the outer side hemispherical surface section (15) away from the connecting plate (13), the outer diameter of the end of the outer side conical surface section (16) close to the connecting plate (13) is equal to the outer diameter of the end of the outer side hemispherical surface section (15) away from the connecting plate (13), and the outer diameter of the end of the outer side conical surface section (16) away from the connecting plate (13) is greater than the outer diameter of the end of the outer side conical surface section (16) close to the connecting plate (13); the outer side hemispherical surface section (15) of the universal joint (4) is located in the interior of the inner side hemispherical surface section (10) of the fixed mouth (6), the outer side conical surface section (16) of the universal joint (4) is located in the interior of the inner side conical surface section (11) of the fixed mouth (6), and the hemispherical surface outside the outer side hemispherical surface section (15) of the universal joint (4) is in sliding contact with the hemispherical surface inside the inner side hemispherical surface section (10) of the fixed mouth (6).

7. A hard connection device for a mine narrow gauge vehicle as claimed in claim 6, characterised in that: The universal joint (4) only comprises the outer side hemispherical surface section (15) and does not comprise the outer side conical surface section (16), the outer side hemispherical surface section (15) of the universal joint (4) is located in the interior of the inner side hemispherical surface section (10) of the fixed mouth (6), and the hemispherical surface outside the outer side hemispherical surface section (15) of the universal joint (4) is in sliding contact with the hemispherical surface inside the inner side hemispherical surface section (10) of the fixed mouth (6).

8. A hard connection device for a mine narrow gauge vehicle as claimed in claim 4, characterised in that: The end of the connecting rod (2) is directly screwed in the interior of the inner side cylindrical section (12) of the fixed mouth (6) of the connecting cylinder (3) and is welded with the fixed mouth (6) of the connecting cylinder (3); or a connecting sleeve (17) is fixedly sleeved on the outer side of the end of the connecting rod (2), the connecting sleeve (17) is screwed on the outer side of the end of the connecting rod (2) and is welded with the connecting rod (2), and the connecting sleeve (17) is screwed in the interior of the inner side cylindrical section (12) of the fixed mouth (6) of the connecting cylinder (3) and is welded with the fixed mouth (6) of the connecting cylinder (3).

9. A hard connection device for a mine narrow gauge vehicle as claimed in claim 4, characterised in that: An oil injection hole (18) is arranged on the side wall of the inner side cylindrical section (12) of the fixed mouth (6) of the connecting cylinder (3), an oil injection plug (19) is screwed at the oil injection hole (18), and lubricating oil is injected in the interior of the fixed mouth (6) of the connecting cylinder (3).

10. A hard connection device for a mine narrow gauge vehicle as claimed in claim 1, characterised in that: The connecting rod (2) is provided in a tubular structure, a spring groove is arranged at the end of the connecting rod (2), a compression spring (20) is arranged in the spring groove, one end of the compression spring (20) is in contact with the universal joint (4), and the other end of the compression spring (20) is in contact with the end face of the spring groove.

Images