Connecting saddle structure for transporting semitrailer

Abstract

The invention relates to the technical field of automobile manufacturing, and discloses a connecting saddle structure for transporting a semitrailer, the connecting saddle structure comprises a saddle main body, the saddle main body is provided with a connecting groove for guiding a connecting column, a clamping block is arranged below the saddle main body, the clamping block is rotatably connected with one side of the saddle main body through a rotating shaft, and the connecting groove is formed in the saddle main body. A sliding groove is formed in the clamping block, a lubricating block is slidably connected into the sliding groove, a plurality of liquid injection heads used for allowing lubricating agents to flow out are arranged at the two ends of the lubricating block, one side of the lubricating block communicates with a conveying pipe, the conveying pipe penetrates through the clamping block, and a limiting sliding groove is formed in one side of the sliding groove. Protrusions on the lubricating blocks are connected with the limiting sliding grooves in a sliding mode, and a plurality of guide blocks are arranged below the saddle body. When the saddle main body structure for transporting the semitrailer is connected with a connecting column of a carriage, the connecting column can be automatically coated with a lubricating agent.

Description

Technical Field

[0001] The invention relates to the technical field of automobile manufacturing, in particular to a connecting saddle structure for a transport semitrailer. Background Art

[0002] As one of the significant components of the semi-trailer, the saddle is mainly used to connect the tractor and the semi-trailer, realizing the functions of load-bearing, steering and connection. It is not only an important connector of the semi-trailer, but also a key safety part, so its strength and reliability will directly affect the driving safety of the semi-trailer. In Europe, it is even defined as a safety connector, and its product quality and operation are also related to life safety. As one of the significant components of the semi-trailer, the saddle is mainly used to connect the tractor and the semi-trailer, realizing the functions of load-bearing, steering and connection. It is not only an important connector of the semi-trailer, but also a key safety part, so its strength and reliability will directly affect the driving safety of the semi-trailer. In Europe, it is even defined as a safety connector, and its product quality and operation are also related to life safety. With the continuous advancement of technology and the continuous development of the market, the structure and materials of the saddle are also continuously optimized and innovated to meet market demand and promote the sustainable development of the road transport industry.

[0003] The existing saddle main structure for transport semi-trailers requires special lubrication of the connecting posts on the carriage to reduce wear of the connecting posts before they are connected, which increases the steps of connecting the carriage and the front of the vehicle and brings certain troubles to the connection. Therefore, it does not meet the existing needs. In this regard, we propose a connecting saddle structure for transport semi-trailers. Summary of the invention

[0004] The present invention provides a connecting saddle structure for a transport semi-trailer, which has the beneficial effect of automatically applying lubricant to the connecting column when connecting with the connecting column of a car body, thereby solving the problem mentioned in the above background technology that before connecting with the connecting column on the car body, it is necessary to specially apply lubricant to the connecting column to reduce the wear of the connecting column, which increases the step of connecting the car body and the front of the car, causing certain troubles in the connection.

[0005] The present invention provides the following technical solutions: a connecting saddle structure for a transport semi-trailer, comprising a saddle body, a connecting groove for guiding a connecting column is arranged on the saddle body, a clamping block is arranged below the saddle body, the clamping block is rotatably connected to one side of the saddle body through a rotating shaft, a sliding groove is arranged inside the clamping block, a lubricating block is slidably connected in the sliding groove, a plurality of injection heads for flowing out lubricant are arranged at both ends of the lubricating block, a delivery pipe is connected to one side of the lubricating block, the delivery pipe passes through the clamping block, a limiting sliding groove is arranged on one side of the sliding groove, and a protrusion on the lubricating block is slidably connected to the limiting sliding groove;

[0006] A plurality of guide blocks are arranged below the saddle body, and locking blocks are slidably connected between the guide blocks, and the locking blocks are used to cooperate with the snap-fit ​​blocks to lock the connecting column, and a fixing plate is fixedly connected to the lower side of the guide block, and the snap-fit ​​blocks and the locking blocks are located between the saddle body and the fixing plate, and a storage bin is arranged on the fixing plate, and the storage bin is used to store lubricant, and one end of the storage bin is connected to the delivery pipe;

[0007] A mounting connection block is arranged on the lower side of the saddle body, and the mounting connection block is used to be connected to the semi-trailer head. An inclined guide groove is arranged on the inner side of the saddle body.

[0008] As an optional scheme for a connecting saddle structure for a transport semi-trailer described in the present invention, the locking block includes a first locking block and a second locking block, both of which are slidably connected to the guide block, one end of the first locking block is provided with an interference slope, one end of the second locking block is fixedly connected to a control rod, and the other end of the control rod is fixedly connected to a pull ring for convenient pulling to unlock.

[0009] As an optional scheme for a connecting saddle structure for a transport semi-trailer described in the present invention, the locking block includes a combination block, a first matching block and a second matching block, and one end of the first matching block and the second matching block are both provided with an arc surface, and the arc surface is used to interfere with the inclined surface of the first locking block.

[0010] As an optional solution of a connecting saddle structure for a transport semi-trailer described in the present invention, a mounting block is fixedly connected to the lower side of the saddle body, a first tension spring is provided at one end of the mounting block, the other end of the first tension spring is fixedly connected to one end of the second locking block, a second tension spring is provided on one side of the mounting block, and the second tension spring is used to be fixedly connected to one side of the combination block.

[0011] As an optional scheme of a connecting saddle structure for a transport semi-trailer described in the present invention, wherein: a plurality of movable grooves are opened at the arc of the lubrication block, an inclined slide groove is opened inside the movable groove, a sliding block is slidably connected in the inclined slide groove, and the sliding block is used to install the injection head.

[0012] As an optional solution for a connecting saddle structure for a transport semi-trailer described in the present invention, a sliding tube is arranged inside the lubrication block, one end of the sliding tube is connected to an air pipe, a sliding abutment rod is slidably connected inside the sliding tube, and one side of the sliding abutment rod is fixedly connected to a protrusion on one side of the sliding block.

[0013] As an optional solution of a connecting saddle structure for a transport semi-trailer described in the present invention, a sliding column is fixedly connected to the lower side of the lubrication block, the sliding column passes through the combination block, the lubrication block is located at one end of the sliding column and a sealing block is provided, the sliding column is slidably connected to the inclined guide groove, and the air pipe is arranged inside the sealing block.

[0014] As an optional solution of the connecting saddle structure for a transport semi-trailer described in the present invention, a sealed air chamber is provided inside the combination block, and the sealing block is slidably connected to the sealed air chamber.

[0015] As an optional scheme for a connecting saddle structure for a transport semi-trailer described in the present invention, one side of the combination block is fixedly connected to a fixed block, one side of the fixed block is fixedly connected to a sealing slide rod, the sealing slide rod is slidably connected to the inside of the storage bin, an arc-shaped sealing block is fixedly connected to the sealing slide rod, and the arc-shaped sealing block is used to prevent leakage of lubricant in the storage bin.

[0016] As an optional solution of the connecting saddle structure for a transport semi-trailer described in the present invention, wherein: an arc groove is opened on the fixing plate, and the arc groove is used for sliding connection with the fixing block.

[0017] The present invention has the following beneficial effects:

[0018] 1. The connecting saddle structure for the transport semi-trailer is designed with a lubricating block so that the saddle body can automatically apply lubricant to the surface of the connecting column during the connection process with the connecting column, which can reduce the steps of connecting the saddle body and the connecting column to a certain extent, and also reduce the wear of the saddle body and the connecting column during the later use.

[0019] 2. The connecting saddle structure for the transport semi-trailer can lock the position of the connecting column through the cooperation between the engaging block and the locking block. At the same time, the design of the second tension spring can prevent the cooperation between the engaging block and the locking block from loosening in the absence of external force;

[0020] Moreover, through the cooperation between the sliding column and the inclined guide groove, the lubrication block can drive each injection head to slide, thereby changing the position of the injection head applying the lubricant, further increasing the area of ​​the connecting column applied with the lubricant, so that as much area of ​​the connecting column surface as possible is coated with the lubricant.

[0021] 3. The connecting saddle structure for the transport semi-trailer drives the sliding block so that the sliding block can drive the injection head to slide under the guidance of the inclined slide groove, so that the injection head can move toward the direction of the connecting column and change the position of the injection head, so that the injection head can apply lubricant to different positions of the connecting column. At the same time, the distance between the injection head and the connecting column can be kept in a relatively static state, further increasing the area of ​​the connecting column to which the lubricant is applied, so that the area of ​​the outer surface of the connecting column is coated with the lubricant as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the lower structure of the present invention.

[0024] Figure 3 It is a schematic diagram of the structure of the present invention not connected to the connecting column.

[0025] Figure 4 It is a schematic diagram of the connection structure with the connecting column of the present invention.

[0026] Figure 5 It is a schematic diagram of the cross-sectional structure of the storage bin of the present invention.

[0027] Figure 6 For the present invention Figure 5 Enlarged structural diagram at A in the middle.

[0028] Figure 7 It is a schematic diagram of the cross-sectional structure of the locking block of the present invention.

[0029] Figure 8 It is a schematic diagram of the sliding structure of the lubrication block of the present invention.

[0030] Fig. 9 It is a schematic diagram of the structure of the lubricating block of the present invention.

[0031] Fig.10 It is a schematic diagram of the cross-sectional structure of the lubrication block of the present invention.

[0032] In the figure: 1, saddle body; 11, connecting groove; 12, fixing plate; 13, storage bin; 14, conveying pipe; 15, installation connection block; 16, inclined guide groove; 17, arc groove; 2, snap-fit ​​block; 21, combination block; 22, first matching block; 23, second matching block; 24, rotating shaft; 25, sliding groove; 26, limiting sliding groove; 27, sealing gas bin; 28, lubricating block; 29, sealing block; 210, sliding column; 211, gas Tube; 212, movable groove; 213, inclined slide groove; 214, sliding block; 215, injection head; 216, sliding tube; 217, sliding rod; 218, fixed block; 219, sealing slide rod; 220, arc-shaped blocking block; 3, locking block; 31, first locking block; 32, second locking block; 33, control rod; 34, pull ring; 35, mounting block; 36, first tension spring; 37, second tension spring; 38, guide block; 4, connecting column. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] For example, see Figure 1-Figure 10 The present invention discloses a connecting saddle structure for a transport semitrailer, comprising a saddle body 1, a connecting groove 11 for guiding a connecting column 4 is arranged on the saddle body 1, the connecting groove 11 is in a trumpet shape for convenient docking with the connecting column 4, a clamping block 2 is arranged below the saddle body 1, the clamping block 2 is rotatably connected to one side of the saddle body 1 through a rotating shaft 24, a sliding groove 25 is arranged inside the clamping block 2, a lubricating block 28 is slidably connected in the sliding groove 25, a plurality of injection heads 215 for flowing out lubricant are arranged at both ends of the lubricating block 28, the lubricant can be applied to the surface of the connecting column 4 through the injection heads 215, one side of the lubricating block 28 is connected with a delivery pipe 14, the delivery pipe 14 passes through the clamping block 2, a limiting slide groove 26 is arranged on one side of the sliding groove 25, a protrusion on the lubricating block 28 is slidably connected to the limiting slide groove 26, the position of the lubricating block 28 can be limited by the design of the sliding groove 25, and the lubricating block 28 is prevented from deviating from a predetermined track during the sliding process;

[0035] A plurality of guide blocks 38 are provided below the saddle body 1, and locking blocks 3 are slidably connected between the guide blocks 38. The design of the plurality of guide blocks 38 can prevent the locking blocks 3 from deviating when sliding. The locking blocks 3 are used to cooperate with the snap-fit ​​blocks 2 to lock the connecting column 4. A fixing plate 12 is fixedly connected to the lower side of the guide blocks 38. The snap-fit ​​blocks 2 and the locking blocks 3 are located between the saddle body 1 and the fixing plate 12. The design of the fixing plate 12 can restrict the locking blocks 3 and the snap-fit ​​blocks 2. A storage bin 13 is provided on the fixing plate 12. The storage bin 13 is used to store lubricants. One end of the storage bin 13 is connected to the delivery pipe 14. The storage bin 13 is in an arc shape. At the same time, a refueling port is provided on one side of the storage bin 13 for conveniently adding lubricants later.

[0036] A mounting connection block 15 is provided on the lower side of the saddle body 1 , and the mounting connection block 15 is used to be connected to the semi-trailer head. An inclined guide groove 16 is provided on the inner side of the saddle body 1 .

[0037] A fixed block 218 is fixedly connected to one side of the combination block 21, and a sealing slide rod 219 is fixedly connected to one side of the fixed block 218. The sealing slide rod 219 is slidably connected to the inside of the storage bin 13, and an arc-shaped blocking block 220 is fixedly connected to the sealing slide rod 219. The arc-shaped blocking block 220 is used to prevent the lubricant in the storage bin 13 from leaking. A sealing gasket is arranged on the arc-shaped blocking block 220 to prevent the lubricant in the storage bin 13 from flowing out of the slide groove during the subsequent sliding process in which the fixed block 218 drives the sealing slide rod 219 to slide in the storage bin 13.

[0038] An arc groove 17 is provided on the fixing plate 12 , and the arc groove 17 is used for sliding connection with the fixing block 218 . The design of the arc groove 17 can leave enough space for the sliding of the fixing block 218 .

[0039] During the connection between the connecting column 4 and the saddle body 1, the connecting column 4 gradually slides into the saddle body 1 from the connecting groove 11, and the connecting column 4 first contacts the engaging block 2, so that the engaging block 2 rotates through the rotating shaft 24. When the engaging block 2 rotates, it drives the fixed block 218 and the sealing slide bar 219 to rotate together. When the sealing slide bar 219 rotates, the lubricant in the storage bin 13 is squeezed, so that the lubricant in the storage bin 13 is transported to each injection head 215 on the lubrication block 28 through the delivery pipe 14, so that the lubricant can be applied to the surface of the connecting column 4 through the injection head 215; at the same time, the design of the arc-shaped blocking block 220 can prevent the lubricant in the storage bin 13 from leaking through the slide groove of the storage bin 13 when the sealing slide bar 219 slides in the storage bin 13, thereby preventing waste of the lubricant.

[0040] In the present embodiment: the engaging block 2 is resisted by the connecting column 4, so that the engaging block 2 can rotate through the rotating shaft 24, and at the same time, the sealing slide bar 219 is driven to slide in the storage bin 13 through the rotation of the engaging block 2. Through the sliding of the sealing slide bar 219, the lubricant in the storage bin 13 can enter the injection head 215 through the delivery pipe 14, so that the lubricant in the storage bin 13 can be transported through the delivery pipe 14 only during the rotation of the engaging block 2, which can prevent the loss of the lubricant in the storage bin 13 and reduce the waste of the lubricant.

[0041] Embodiment 2: This embodiment is intended to promote the solution of the problem that when the connecting column 4 is connected to the saddle body 1, the contact area between the injection head 215 and the connecting column 4 is small. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1-Figure 10 The locking block 2 includes a first locking block 31 and a second locking block 32, both of which are slidably connected to the guide block 38. One end of the first locking block 31 is provided with an interference slope, and one end of the second locking block 32 is fixedly connected to a control rod 33, and the other end of the control rod 33 is fixedly connected to a pull ring 34 for convenient pulling and unlocking. After the connecting column 4 is connected to the saddle body 1, it can be unlocked by pulling the pull ring 34.

[0042] The locking block 2 includes a combination block 21, a first matching block 22 and a second matching block 23. One end of the first matching block 22 and the second matching block 23 are both provided with an arc surface, and the arc surface is used to interfere with the inclined surface of the first locking block 31. The design of the arc and the inclined surface interfering can prevent subsequent jamming.

[0043] A mounting block 35 is fixedly connected to the lower side of the saddle body 1, a first tension spring 36 is provided at one end of the mounting block 35, the other end of the first tension spring 36 is fixedly connected to one end of the second locking block 32, and a second tension spring 37 is provided on one side of the mounting block 35, and the second tension spring 37 is used to be fixedly connected to one side of the combination block 21.

[0044] A sliding column 210 is fixedly connected to the lower side of the lubricating block 28, and the sliding column 210 passes through the combination block 21. A sealing block 29 is provided at one end of the lubricating block 28 located at the sliding column 210. The sliding column 210 is slidably connected to the inclined guide groove 16. The design of guiding the sliding column 210 by the inclined guide groove 16 allows the locking block 2 to slide in the sliding groove 25 inside the locking block 2 during the process of driving the lubricating block 28 to rotate through the guidance of the inclined guide groove 16. The air pipe 211 is arranged inside the sealing block 29.

[0045] See Figure 3In the process of connecting the connecting column 4 with the saddle body 1, the connecting column 4 first contacts one side of the second matching block 23, and through the contact with the second matching block 23, the combination block 21 and the first matching block 22 are driven to rotate through the rotating shaft 24, and the second tension spring 37 is deformed during the rotation; while the second matching block 23 rotates, the arc at one end of the second matching block 23 is moved away from the inclined surface at one end of the first locking block 31, so that the first locking block 31 and the second locking block 32 slide toward the direction of the mounting block 35 under the action of the first tension spring 36. At this time, the connecting column 4 is located between the second matching block 23 and the first locking block 31, and at the same time, the inclined surface at one end of the first locking block 31 is contacted with the arc at one end of the first matching block 22; see Figure 4 As the connecting column 4 continues to slide, the combination block 21, the first matching block 22 and the second matching block 23 continue to rotate, so that the arc at one end of the first matching block 22 slides over the inclined surface at one end of the first locking block 31, and when the first matching block 22 and the second matching block 23 are rotated to a position relatively parallel to the guide block 38, the first locking block 31 and the second locking block 32 clamp both sides of the first matching block 22 and the second matching block 23, so that the first matching block 22 and the second matching block 23 are clamped between the first locking block 31 and the second locking block 32, thereby completing the locking.

[0046] When the engaging block 2 rotates during the locking process of the connecting column 4, the lubricating block 28 inside the engaging block 2 can be driven to rotate together. During the rotation of the lubricating block 28, the sliding column 210 can be driven to slide in the inclined guide groove 16. The inclined guide groove 16 guides the sliding column 210. Figure 7 and Figure 8 , so that the sliding column 210 drives the lubricating block 28 to slide in the sliding groove 25, and the sliding of the lubricating block 28 changes the position of the injection head 215, thereby increasing the area of ​​the connecting column 4 coated with lubricant.

[0047] In this embodiment: through the cooperation between the engaging block 2 and the locking block 3, the position of the connecting column 4 can be locked, and at the same time, the first tension spring 36 pulls the locking block 3 to prevent the subsequent cooperation between the locking block 3 and the engaging block 2 from being loose, and prevents the locking of the connecting column 4 from being loose. At the same time, through the design of the first tension spring 36, the cooperation between the engaging block 2 and the locking block 3 can be more stable, so that in the absence of external force, the cooperation between the engaging block 2 and the locking block 3 will not be loose.

[0048] Moreover, during the rotation of the locking block 2, the sliding column 210 is driven to slide in the inclined guide groove 16, so that the lubricating block 28 can slide in the sliding groove 25, and the injection head 215 changes the position of applying the lubricant, thereby increasing the area of ​​the connecting column 4 surface coated with the lubricant, and further increasing the area of ​​the lubricant applied on the surface of the connecting column 4, so that the area of ​​the outer surface of the connecting column 4 is coated with the lubricant as much as possible.

[0049] Embodiment 3: This embodiment is intended to promote the solution of the problem that when the connecting column 4 is connected to the saddle body 1, the contact area between the arc of the lubricating block 28 and the connecting column 4 is small. This embodiment is an improvement made on the basis of embodiment 2. For details, please refer to Figure 1-Figure 10 A plurality of movable grooves 212 are provided at the arc of the lubricating block 28, and an inclined groove 213 is provided inside the movable groove 212. A sliding block 214 is slidably connected in the inclined groove 213. Through the design of the movable groove 212, space can be provided for the subsequent sliding of the sliding block 214. At the same time, the inclined groove 213 has a certain inclination angle. Through such a design, the subsequent sliding block 214 drives the injection head 215 to move toward the direction of the connecting column 4 during the sliding process. The sliding block 214 is used to install the injection head 215. Through the design of the movable groove 212 and the sliding block 214, the sliding block 214 can drive the injection head 215 to slide in the movable groove 212, thereby increasing the area of ​​the connecting column 4 surface coated with lubricant.

[0050] A sliding tube 216 is provided inside the lubrication block 28 , one end of the sliding tube 216 is connected to the air pipe 211 , a sliding rod 217 is slidably connected inside the sliding tube 216 , and one side of the sliding rod 217 is fixedly connected to a protrusion on one side of the sliding block 214 .

[0051] A sealed air chamber 27 is provided inside the assembly block 21 , and the sealing block 29 is slidably connected to the sealed air chamber 27 .

[0052] When the lubricating block 28 slides in the sliding groove 25, it will drive the sealing block 29 to slide in the sealing gas chamber 27. The sliding of the sealing block 29 compresses the gas in the sealing gas chamber 27, so that the gas in the sealing gas chamber 27 enters each sliding tube 216 through the air pipe 211. After the gas enters the sliding tube 216, Fig.10 The sliding rod 217 is driven by gas to slide in the sliding tube 216. When the sliding rod 217 slides, the protrusion under the sliding block 214 enables the sliding block 214 to slide in the inclined slide groove 213. When the sliding block 214 slides, the injection head 215 is driven to slide together, so that the position of the injection head 215 is changed, thereby increasing the area of ​​the connecting column 4 coated with lubricant.

[0053] It should be noted that when the lubricating block 28 slides in the sliding groove 25, the sliding block 214 will slide. Through such a design, the arc of the lubricating block 28 is away from the connecting column 4, and the sliding block 214 can drive the injection head 215 to slide toward the position of the connecting column 4. Through such a design, the distance between the injection head 215 and the surface of the connecting column 4 can always be in a relatively static state. Through the inclined design of the inclined sliding groove 213, the position of the lubricant applied to the connecting column 4 can be changed during the sliding process of the injection head 215, thereby increasing the area of ​​the lubricant applied to the surface of the connecting column 4, so that the injection head 215 can change its position while keeping the distance between the injection head 215 and the connecting column 4 unchanged.

[0054] In this embodiment: the sliding block 214 and the injection head 215 are driven to slide by the sliding rod 217, so that the injection head 215 can change the position of applying the lubricant to the connecting column 4, and can further increase the area of ​​the lubricant applied to the connecting column 4, so that as much area of ​​the surface of the connecting column 4 as possible is coated with the lubricant. At the same time, the inclined design of the inclined slide groove 213 allows the sliding block 214 to drive the injection head 215 to slide and slide in the direction of the connecting column 4. Through such a design, the distance between the injection head 215 and the connecting column 4 can be in a relatively static state, so that the injection head 215 can always be in the best state for applying the lubricant, preventing the poor effect of applying the lubricant in some parts of the connecting column 4.

[0055] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0056] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A connecting saddle structure for a transport semitrailer, comprising a saddle body (1), the saddle body (1) being provided with a connecting groove (11) for guiding a connecting column (4), a snap-fit ​​block (2) being provided below the saddle body (1), the snap-fit ​​block (2) being rotatably connected to one side of the saddle body (1) via a rotating shaft (24), characterized in that: A sliding groove (25) is provided inside the engaging block (2), a lubricating block (28) is slidably connected inside the sliding groove (25), a plurality of injection heads (215) for discharging lubricant are provided at both ends of the lubricating block (28), one side of the lubricating block (28) is connected to a delivery pipe (14), the delivery pipe (14) passes through the engaging block (2), a limiting sliding groove (26) is provided on one side of the sliding groove (25), and a protrusion on the lubricating block (28) is slidably connected to the limiting sliding groove (26); A plurality of guide blocks (38) are arranged below the saddle body (1), and locking blocks (3) are slidably connected between the guide blocks (38), and the locking blocks (3) are used to cooperate with the snap-fit ​​blocks (2) to lock the connecting column (4). A fixing plate (12) is fixedly connected to the lower side of the guide blocks (38), and the snap-fit ​​blocks (2) and the locking blocks (3) are located between the saddle body (1) and the fixing plate (12). A storage bin (13) is arranged on the fixing plate (12), and the storage bin (13) is used to store lubricant, and one end of the storage bin (13) is connected to the delivery pipe (14); A mounting connection block (15) is provided on the lower side of the saddle body (1), and the mounting connection block (15) is used to be connected to the front of a semitrailer. An inclined guide groove (16) is provided on the inner side of the saddle body (1).

2. The connecting saddle structure for a transport semitrailer according to claim 1, characterized in that: The locking block (2) comprises a first locking block (31) and a second locking block (32), the first locking block (31) and the second locking block (32) are both slidably connected to the guide block (38), one end of the first locking block (31) is provided with a resisting inclined surface, one end of the second locking block (32) is fixedly connected to a control rod (33), and the other end of the control rod (33) is fixedly connected to a pull ring (34) for convenient pulling and unlocking.

3. The connecting saddle structure for a transport semitrailer according to claim 2, characterized in that: The locking block (2) comprises a combination block (21), a first matching block (22) and a second matching block (23); one end of each of the first matching block (22) and the second matching block (23) is provided with an arc surface, and the arc surface is used to abut against the inclined surface of the first locking block (31).

4. The connecting saddle structure for a transport semitrailer according to claim 3, characterized in that: A mounting block (35) is fixedly connected to the lower side of the saddle body (1); a first tension spring (36) is provided at one end of the mounting block (35); the other end of the first tension spring (36) is fixedly connected to one end of the second locking block (32); a second tension spring (37) is provided on one side of the mounting block (35); the second tension spring (37) is used to be fixedly connected to one side of the combination block (21).

5. The connecting saddle structure for a transport semitrailer according to claim 3, characterized in that: A plurality of movable grooves (212) are provided at the circular arc of the lubricating block (28), an inclined sliding groove (213) is provided inside the movable groove (212), a sliding block (214) is slidably connected inside the inclined sliding groove (213), and the sliding block (214) is used to install the liquid injection head (215).

6. The connecting saddle structure for a transport semitrailer according to claim 5, characterized in that: A sliding tube (216) is provided inside the lubricating block (28), one end of the sliding tube (216) is connected to the air pipe (211), a sliding rod (217) is slidably connected inside the sliding tube (216), and one side of the sliding rod (217) is fixedly connected to a protrusion on one side of the sliding block (214).

7. The connecting saddle structure for a transport semitrailer according to claim 6, characterized in that: A sliding column (210) is fixedly connected to the lower side of the lubricating block (28), and the sliding column (210) passes through the assembly block (21). A sealing block (29) is provided at one end of the lubricating block (28) located on the sliding column (210), and the sliding column (210) is slidably connected to the inclined guide groove (16), and the air pipe (211) is provided inside the sealing block (29).

8. The connecting saddle structure for a transport semitrailer according to claim 7, characterized in that: A sealed air chamber (27) is provided inside the assembly block (21), and the sealing block (29) is slidably connected to the sealed air chamber (27).

9. The connecting saddle structure for a transport semitrailer according to claim 3, characterized in that: A fixed block (218) is fixedly connected to one side of the combination block (21), a sealing slide bar (219) is fixedly connected to one side of the fixing block (218), the sealing slide bar (219) is slidably connected to the inside of the storage bin (13), an arc-shaped blocking block (220) is fixedly connected to the sealing slide bar (219), and the arc-shaped blocking block (220) is used to prevent leakage of lubricant in the storage bin (13).

10. The connecting saddle structure for a transport semitrailer according to claim 9, characterized in that: The fixing plate (12) is provided with an arc-shaped groove (17), and the arc-shaped groove (17) is used for sliding connection with the fixing block (218).

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