Crankshaft mechanism and straw walker

Abstract

The utility model relates to the technical field of agricultural equipment, in particular to a crankshaft mechanism and a straw walker. The bearing assembly at least comprises a rotary connecting piece and a follow-up connecting piece, and the rotary connecting piece is rotationally connected with the follow-up connecting piece; the follow-up connecting piece is provided with a mounting channel, the linear section of the crank throw penetrates through the mounting channel, and the follow-up connecting piece is connected with the crankshaft; and the rotary connecting piece is arranged on the mounting component. According to the crankshaft mechanism, the bearing type crankshaft structure is adopted, compared with a traditional bearing bush type crankshaft structure, operation is smooth, a gap between the bearing bush and the crankshaft does not need to be adjusted according to experience of workers like a bearing bush type crankshaft, the difficulty of manufacturer production and user maintenance is lowered, frequent oil injection maintenance needed by the bearing bush type crankshaft is reduced, and the service life of the crankshaft is prolonged. The workload of vehicle maintenance of a user is reduced, and the comprehensive performance of existing harvesting machinery is improved.

Description

Technical Field

[0001] This application relates to the technical field of agricultural machinery equipment, and particularly to a crankshaft mechanism and a straw walker. Background Art

[0002] Currently, cultivated land has started to show large-scale and standardization, and farmers' crop planting and harvesting have become more professional. The demand for mid- to high-end harvesting machinery in the agricultural machinery market has emerged. Agricultural machinery operators have begun to pursue large-scale harvesting machinery with a large feeding volume, high operating speed, comfort, and reliability. At the same time, with the improvement of the service awareness of agricultural machinery operators and the cost awareness of farmers, the market has put forward higher requirements for the product performance of large-scale harvesting machinery.

[0003] The development of domestic harvesting machinery aims to liberate the labor force and reduce the labor intensity and improve the operation efficiency. However, the economic benefits that can be explored during the agricultural harvesting process are not only limited to work efficiency. The ways of increasing revenue and reducing expenditure, such as processing crop straws and chaff into livestock feed or industrial raw materials, and even reducing fuel consumption by reducing the mechanical operation power, have been increasingly valued by farmers.

[0004] In the domestic agricultural machinery market, the wheat harvesting machinery is mainly of the axial flow drum type, accounting for more than 90%, while the proportion of the straw walker type is extremely small. In foreign markets such as Europe, America, and Central Asia, due to the more developed animal husbandry and the stronger demand for crop straws, the market share of the straw walker type is very high. With the development of the Chinese livestock industry and the improvement of the living standards of the Chinese people, the demand for beef, mutton, milk, and dairy products has increased rapidly. As a result, the demand for forage and feed processed from crop straws has increased. The straw walker type has attracted the attention of farmers in various regions due to the characteristics of long straw discharge. The technical route of the straw walker type in the combine harvester is a tangential flow drum + a key-type straw walker. The role of the tangential flow drum is to forcibly rub off the grains of the crop from the chaff and straw, and then the key-type straw walker separates the grains from the straw. The key-type straw walker adopts the principle of a double-crank four-bar mechanism, which drives the key box to achieve a rotary motion through two synchronously rotating crankshafts, one in the front and the other in the rear.

[0005] The core of the movement of the key-type straw walker is the hinge connection structure between the key box and the front and rear crankshafts. The front and rear crankshafts are designed with several sets of crank throws that rotate synchronously as needed. Key boxes are installed at the straight-line segments of the crank throws of the front and rear crankshafts. The currently applied solution in the market is to wrap the crankshaft with two semi-circular groove-bearing blocks, fix the bearing blocks with bolts, and the circular grooves of the bearing blocks can rotate around the crankshaft. The end faces of the bearing blocks can be connected to the key box. The structure of the straw walker with a bearing-type crankshaft is relatively simple. However, since a set of front and rear crankshafts need to drive multiple sets of key boxes simultaneously, it is very difficult to adjust the gap between the bearing blocks, resulting in a large amount of maintenance work and difficulty for the straw walker. At the same time, the rotational torque of the straw walker with this structure is relatively high, and the power consumption of the engine is relatively large. In addition, due to the relatively harsh harvesting environment of crops and other reasons, this structure is prone to dust accumulation, and the wear of the crankshaft is relatively serious, requiring a high maintenance frequency. Utility Model Content

[0006] The purpose of this application is to provide a crankshaft mechanism and a straw walker to solve, to a certain extent, the technical problem in the existing technology that the existing straw walkers mostly use bearing-type crankshafts, which are prone to difficult adjustment of the gap between the bearing blocks and increase the maintenance difficulty of the straw walker.

[0007] This application provides a crankshaft mechanism, including: a crankshaft, and the crankshaft includes a straight-line segment of the crank throw;

[0008] A bearing assembly, the bearing assembly includes at least a rotating connecting member and a follower connecting member, and the rotating connecting member is rotatably connected to the follower connecting member; an installation channel is provided on the follower connecting member, the straight-line segment of the crank throw passes through the installation channel, and the follower connecting member is connected to the crankshaft;

[0009] An installation member, and the rotating connecting member is arranged on the installation member.

[0010] In the above technical solution, further, the follower connecting member has a cylindrical structure with openings at both ends, and the internal space of the cylindrical structure forms the installation channel, and the shape of the installation channel is adapted to the outer shape of the straight-line segment of the crank throw;

[0011] A connecting portion is provided on the outer wall surface of one end port of the follower connecting member, and along the axis of the follower connecting member from the direction of the connecting portion to the other end port of the follower connecting member, the wall thickness of the follower connecting member gradually increases.

[0012] In any of the above technical solutions, further, the bearing assembly further includes a set screw connecting member, and the set screw connecting member can be adaptively connected to the connecting portion;

[0013] The side wall of the follower connecting piece is provided with an opening part, and the length of the opening part extends along the length direction of the follower connecting piece. When the follower connecting piece is in a connected state with the connecting part, the width of the opening part decreases;

[0014] The outer wall surface of the follower connecting piece is provided with a deformation groove.

[0015] In any of the above technical solutions, further, the rotating connecting piece includes:

[0016] A connecting inner ring, and the follower connecting piece is inserted through the connecting inner ring;

[0017] A connecting outer ring, and the connecting inner ring is rotatably connected to the connecting outer ring.

[0018] In any of the above technical solutions, further, the crankshaft mechanism further includes a fixed seat, and the fixed seat is connected to the mounting member; the connecting outer ring is connected to the fixed seat.

[0019] In any of the above technical solutions, further, the mounting member includes:

[0020] A first fixing bracket;

[0021] A second fixing bracket, and the second fixing bracket is connected to the first fixing bracket through a connecting member;

[0022] A clamping space is provided between the first fixing bracket and the second fixing bracket, and the fixed seat is arranged in the clamping space;

[0023] The first fixing bracket and the second fixing bracket are respectively provided with connecting plates;

[0024] The first fixing bracket is provided with a first through hole, and the second fixing bracket is provided with a second through hole at a position opposite to the first through hole. The first through hole, the second through hole and the fixed seat are coaxially arranged.

[0025] In any of the above technical solutions, further, the bearing assembly further includes a set washer, and the set washer is arranged between the set connecting piece and the rotating connecting piece.

[0026] In any of the above technical solutions, further, the wall surface of the follower connecting piece in contact with the crank throw straight segment is coated with an adhesive.

[0027] In any of the above technical solutions, further, the crankshaft mechanism further includes a dust cover, and the dust cover is arranged on the side of the mounting member.

[0028] In any of the above technical solutions, further, the number of the crankshaft mechanisms is at least two, and one of the crankshaft mechanisms is a driving shaft;

[0029] The straw walker further includes a key box, and the mounting member is connected to the key box.

[0030] This application also provides a straw walker, including the crankshaft mechanism described in any of the above technical solutions. Therefore, it has all the beneficial technical effects of this crankshaft mechanism, and will not be elaborated here.

[0031] Compared with the prior art, the beneficial effects of this application are as follows:

[0032] The crankshaft mechanism provided by this application includes: a crankshaft, the crankshaft includes a crank straight section; a bearing assembly, the bearing assembly at least includes a rotating connecting member and a follower connecting member, and the rotating connecting member is rotatably connected to the follower connecting member; the follower connecting member is provided with an installation channel, the crank straight section is inserted into the installation channel, and the follower connecting member is connected to the crankshaft; a mounting member, and the rotating connecting member is arranged on the mounting member.

[0033] The crankshaft mechanism provided by this application adopts a bearing-type crankshaft structure, which runs smoothly compared with the traditional bushing-type crankshaft structure. It does not need to rely on the experience of workers to adjust the gap between the bushing and the crankshaft like the bushing-type crankshaft, reducing the production difficulty of manufacturers and the maintenance difficulty of users. It also reduces the need for frequent oil injection and maintenance of the bushing-type crankshaft, reducing the workload of users to maintain the vehicle, and improving the comprehensive performance of existing harvesting machinery.

[0034] The straw walker provided by this application includes the above-mentioned crankshaft mechanism. Therefore, through the above crankshaft mechanism, the maintenance frequency and difficulty of this straw walker are effectively reduced, the comprehensive performance of this straw walker is improved, and the product competitiveness of this straw walker is also improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific embodiments of this application or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of this application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0036] Figure 1 It is a schematic structural diagram of the crankshaft mechanism provided by an embodiment of this application;

[0037] Figure 2 It is another schematic structural diagram of the crankshaft mechanism provided by an embodiment of this application;

[0038] Figure 3 It is a partial schematic structural diagram of the crankshaft mechanism provided by an embodiment of this application;

[0039] Figure 4 For Figure 3 Sectional view along A-A.

[0040] Reference numerals:

[0041] 1 - Crankshaft, 101 - Straight section of crank throw, 2 - Bearing assembly, 201 - Follow-up connecting member, 2011 - Installation channel, 2012 - Connecting part, 2013 - Opening part, 2014 - Deformation groove, 202 - Rotating connecting member, 203 - Fixing connecting member, 3 - Mounting member, 301 - First fixing bracket, 302 - Second fixing bracket, 303 - First connecting plate, 304 - Second connecting plate, 4 - Lock washer, 401 - Second locking tooth, 5 - Fixed seat, 501 - Connecting ear plate, 502 - Connecting hole, 6 - Connecting member. Detailed implementation manners

[0042] The technical solutions of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments.

[0043] The components of the embodiments of the present application usually described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but merely represents the selected embodiments of the present application.

[0044] All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0045] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present application. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0046] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0047] The following refers to Figures 1 to 4 the crankshaft mechanism and the straw walker described in the embodiments of the present application.

[0048] Referring to Figures 1 to 4 As shown, the embodiments of the present application provide a crankshaft mechanism. This crankshaft mechanism is applicable to agricultural machinery equipment, especially applicable to a straw walker. This crankshaft mechanism includes a crankshaft 1, a bearing assembly 2, and a mounting member 3. Among them, the crankshaft 1 includes a plurality of bent segments and a plurality of crank straight segments 101. One crank straight segment 101 is arranged between two bent segments, and at least one bearing assembly 2 is inserted through each crank straight segment 101. The crankshaft 1 is connected to the mounting member 3 through the bearing assembly 2. The mounting member 3 is arranged at a specified position of the straw walker, and the mounting member 3 is used to mount the crankshaft 1 to the specified position. The bearing assembly 2 at least includes a rotating connecting member 202 and a follower connecting member 201 that can rotate relative to each other. The follower connecting member 201 is provided with a mounting channel 2011 for inserting the crank straight segment 101. The follower connecting member 201 is connected to the crank straight segment 101, so that the follower connecting member 201 can rotate synchronously with the crank straight segment 101. The rotating connecting member 202 is connected to the mounting member 3, so that the mounting member 3 and the rotating connecting member 202 can support the crankshaft 1 without affecting the normal rotation of the crankshaft 1.

[0049] Specifically, the follower connecting member 201 has a cylindrical structure with a hollow interior and openings formed at both ends. The interior of the cylindrical structure forms the mounting channel 2011. The shape of the space defined by the mounting channel 2011 is adapted to the outer shape of the crank straight segment 101, so that the mounting channel 2011 can wrap the crank straight segment 101. The outer wall of the crank straight segment 101 is in contact with the inner wall surface of the mounting channel 2011, reducing the gap between the crank straight segment 101 and the mounting channel 2011 to the greatest extent, and reducing the probability that dust accumulation is likely to cause wear to the crank straight segment 101. Compared with the fixed method of the bearing bush, the difficulty of adjusting the gap between the bearing bush and the crankshaft 1 is greatly reduced, thereby reducing the difficulty of production for manufacturers and maintenance for users. Preferably, the follower connecting member 201 is sleeved on the middle position of the crank straight segment 101.

[0050] A connecting portion 2012 is provided at a position on the outer wall surface of the follower connecting member 201 near one end port, and the connecting portion 2012 is used to connect with the following locking connecting member 203. The inner diameter of the inner wall surface of the follower connecting member 201 is equal everywhere. Along the direction from one end port of the follower connecting member 201 near the connecting portion 2012 to the other end port, the wall thickness of the follower connecting member 201 gradually increases, so that the outer surface of the follower connecting member 201 forms a taper. Correspondingly, along the same direction, the inner diameter of the rotating connecting member 202 gradually increases, so that the inner wall surface of the connecting inner ring of the rotating connecting member 202 forms a taper adapted to the outer surface of the follower connecting member 201, so that after the rotating connecting member 202 and the follower connecting member 201 are assembled, the two can fit together, thereby strengthening the assembly stability of the follower connecting member 201 and the rotating connecting member 202.

[0051] Furthermore, the bearing assembly 2 further includes a locking connecting member 203. In this embodiment, the locking connecting member 203 is specifically a locking nut, which is provided with an internal thread, and the connecting portion 2012 on the follower connecting member 201 is specifically an external thread that can be adapted to the internal thread of the locking nut, so that the locking connecting member 203 and the connecting portion 2012 can be connected by the mutually adapted threads.

[0052] An opening portion 2013 is provided on the side wall of the follower connecting member 201. The opening portion 2013 penetrates through the inner and outer wall surfaces of the follower connecting member 201. The length of the opening portion 2013 extends along the length direction of the follower connecting member 201, so that the follower connecting member 201 is integrally in an incompletely closed ring shape. Since the outer wall surface of the follower connecting member 201 has a taper, when the locking connecting member 203 is screwed tightly, as the screwing depth of the locking connecting member 203 continuously increases, the two side edges of the opening portion 2013 gradually approach each other, so that the follower connecting member 201 can hold the crank straight segment 101 in a manner similar to a hoop, ensuring the stability between the follower connecting member 201 and the crank straight segment 101, avoiding the slipping phenomenon between the crank straight segment 101 and the follower connecting member 201 when the crankshaft 1 rotates, and also effectively reducing the gap between the follower connecting member 201 and the crank straight segment 101.

[0053] A deformation groove 2014 is also provided on the outer wall surface of the follower connector 201. The deformation groove 2014 is recessed toward the interior of the follower connector 201. The length of the deformation groove 2014 extends along the length of the follower connector 201. The thickness of the position where the deformation groove 2014 is formed on the follower connector 201 is smaller than the thickness at other positions. Preferably, one of the diameters of the follower connector 201 can pass through the deformation groove 2014 and the opening 2013 in sequence, so that the position of the deformation groove 2014 and the position of the opening 2013 can be arranged opposite to each other. During assembly, the follower connector 201 is bent to increase the width of the opening 2013 so that the follower connector 201 can be mounted on the curved straight line segment. The deformation groove 2014 can provide a deformation margin for the follower connector 201 to smoothly complete the assembly of the follower connector 201 and the curved straight line segment 101.

[0054] Preferably, the follower connector 201 and the wall surface where the curved straight line segment 101 contacts each other are fixed by adhesive to enhance the stability between the two and reduce the probability of axial movement. The adhesive can specifically be a directly purchased glue of the brand Loctite and model EA9497. Of course, it is not limited to this, and can also be other commonly used metal AB glue.

[0055] Furthermore, the rotating connector 202 is specifically a bearing, preferably a maintenance-free bearing commonly used in the prior art, and the rotating connector 202 includes a connecting inner ring and a connecting outer ring, and the connecting inner ring and the connecting outer ring are connected by ball bearings, so that the connecting inner ring and the connecting outer ring can generate relative motion. The follower connector 201 is inserted into the connecting inner ring, and the connecting outer ring is used to connect with the mounting member 3. The connecting inner ring can rotate synchronously with the follower connector 201 and the curved straight line segment 101, and the connecting outer ring and the mounting member 3 remain fixed.

[0056] Furthermore, the bearing assembly 2 also includes a locking washer 4, which is annular and is sleeved on the connecting portion 2012. After the locking connector 203 is connected in place, the locking washer 4 is located between the locking connector 203 and the rotating connector 202, ensuring the connection stability between the locking connector 203 and the connecting portion 2012, and also improving the sealing between the two to avoid dust accumulation.

[0057] The set screw washer 4 has an inner ring and an outer ring. The inner ring is provided with a first locking tooth (not shown in the figure). The first locking tooth protrudes relative to the inner ring, and the shape of the first locking tooth is adapted to the shape of the opening 2013. After the set screw washer 4 is assembled, the first locking tooth is embedded into the opening 2013, thereby preventing the set screw washer 4 from rotating. The outer ring is provided with second locking teeth 401. The number of the second locking teeth 401 is at least one, preferably multiple. The multiple second locking teeth 401 are arranged at intervals. On the surface of the set screw connector 203 facing the set screw washer 4, a clamping groove is provided. The shape of the clamping groove is adapted to the shape of the second locking teeth 401. The number of the clamping grooves is one or more. When the number of the clamping grooves is multiple, the multiple clamping grooves are arranged at intervals. Preferably, the set screw washer 4 in this embodiment is a metal washer. After the set screw washer 4 is installed in place, the second locking teeth 401 can be bent towards the set screw connector 203 so that they are embedded into one of the clamping grooves, thereby strengthening the stability between the set screw washer 4 and the set screw connector 203 and further improving the anti-rotation and anti-loosening effect of the set screw washer 4.

[0058] Further, the crankshaft mechanism further includes a fixing seat 5. The rotating connector 202 is arranged on the fixing seat 5. The fixing seat 5 is connected to the mounting member 3, so that the rotating connector 202 is connected to the mounting member 3 through the fixing seat 5. Specifically, the connecting outer ring of the rotating connector 202 is connected to the fixing seat 5. The fixing seat 5 has an annular structure, and the rotating connector 202 and the fixing seat 5 are coaxially arranged. The outer wall surface of the fixing seat 5 is provided with connecting ear plates 501. The number of the connecting ear plates 501 is multiple, and the multiple connecting ear plates 501 are arranged at equal intervals along the circumferential direction of the fixing seat 5. Preferably, the connecting ear plates 501 and the fixing seat 5 have an integral structure. Each connecting ear plate 501 is provided with a connecting hole 502 for a bolt or other form of fastener to pass through the connecting hole 502 to be connected to the mounting member 3.

[0059] Preferably, the fixing seat 5 is made of nylon material, and it can also be changed to other plastic materials such as PEEK (polyether ether ketone), POM (polyoxymethylene), and polyester fiber. Of course, it is not limited to this, and it can also be made of metal materials.

[0060] Further, the mounting member 3 includes a first fixing frame 301 and a second fixing frame 302. The first fixing frame 301 and the second fixing frame 302 are arranged facing each other at intervals. A clamping space is formed between the first fixing frame 301 and the second fixing frame 302. The fixing seat 5 is clamped in the clamping space. The connecting member 6 sequentially passes through the first fixing frame 301, the connecting hole 502 of the fixing seat 5, and the second fixing frame 302, thereby connecting the first fixing frame 301, the fixing seat 5, and the second fixing frame 302. It should be noted that the connecting member 6 in this embodiment can specifically be a bolt provided with a matching nut.

[0061] The first fixing bracket 301 is provided with a first connecting plate 303, and the second fixing bracket 302 is provided with a second connecting plate 304. The first connecting plate 303 and the second connecting plate 304 are used for connecting to the designated positions of the straw walker.

[0062] The first fixing bracket 301 is provided with a first through hole, and the second fixing bracket 302 is provided with a second through hole. The first through hole and the second through hole are coaxially arranged, and the first through hole, the second through hole, the fixed seat 5, the follower connecting member 201, and the rotating connecting member 202 are all coaxially arranged, so as to be able to smoothly install the fixed seat 5 and the bearing assembly 2.

[0063] It should be noted that the fixed seat 5 and the mounting member 3 can adopt the above-mentioned detachable connection mounting method, or can adopt the form of integrally processed and formed with an integral structure.

[0064] Preferably, limiting plates (not shown in the figure) are respectively provided on the side of the first fixing bracket 301 facing away from the second fixing bracket 302 and the side of the second fixing bracket 302 facing away from the first fixing bracket 301. The limiting plates are arranged to avoid the crankshaft 1 and the follower connecting member 201, so as not to affect the smoothness of the rotation process of the crankshaft 1. The limiting plates can limit the rotating connecting member 202 to prevent axial displacement of the rotating connecting member 202.

[0065] Furthermore, the crankshaft mechanism further includes dust covers (not shown in the figure). The number of dust covers is two, and the two dust covers symmetrically cover both sides of the mounting member 3. The dust covers are provided with through holes for passing through the straight section 101 of the crank throw. One dust cover covers the side of the first fixing bracket 301 facing away from the second fixing bracket 302, and the other dust cover covers the side of the second fixing bracket 302 facing away from the first fixing bracket 301. The two dust covers respectively protect the mounting member 3 and the bearing assembly 2 on both sides of the mounting member 3 to prevent a large amount of dust from entering.

[0066] In summary, the crankshaft mechanism provided by the present application adopts a bearing type crankshaft 1 structure, which runs smoothly compared with the traditional bushing type crankshaft 1 structure. It does not need to rely on the experience of workers to adjust the gap between the bushing and the crankshaft 1 like the bushing type crankshaft 1, reducing the production difficulty of the manufacturer and the maintenance difficulty of the user. It also reduces the need for frequent oil injection and maintenance of the bushing type crankshaft 1, reducing the workload of the user in maintaining the vehicle and improving the comprehensive performance of the existing harvesting machinery.

[0067] The embodiment of the present application also provides a straw walker, including the crankshaft mechanism described in any one of the above embodiments. Therefore, it has all the beneficial technical effects of this crankshaft mechanism and will not be elaborated here.

[0068] The straw walker includes two or more crankshaft mechanisms, with one crankshaft mechanism serving as the driving shaft. The straw walker further includes a driving device and a transmission mechanism, and the driving shaft is connected to the driving device through the transmission mechanism.

[0069] Furthermore, the straw walker further includes a key box. The first connecting plate 303 and the second connecting plate 304 of the mounting member 3 are respectively connected to the key box, thereby fixing the crankshaft mechanism to the key box.

[0070] The straw walker provided by this application effectively reduces the maintenance frequency and difficulty of the straw walker through the above-mentioned crankshaft mechanism, improves the comprehensive performance of the straw walker, and also improves the product competitiveness of the straw walker.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A crankshaft mechanism, characterized in that, Comprising: A crankshaft, the crankshaft including a straight crank segment; A bearing assembly, the bearing assembly at least including a rotating connecting member and a follower connecting member, the rotating connecting member being rotatably connected to the follower connecting member; the follower connecting member is provided with an installation channel, the straight crank segment passes through the installation channel, and the follower connecting member is connected to the crankshaft; An installation member, the rotating connecting member is arranged on the installation member.

2. The crankshaft mechanism according to claim 1, characterized in that, The follower connecting member has a cylindrical structure with openings at both ends, and the internal space of the cylindrical structure forms the installation channel, and the shape of the installation channel is adapted to the outer shape of the straight crank segment; An outer wall surface of one end port of the follower connecting member is provided with a connecting portion, and along the axis of the follower connecting member from the connecting portion towards the other end port of the follower connecting member, the wall thickness of the follower connecting member gradually increases.

3. The crankshaft mechanism according to claim 2, characterized in that The bearing assembly further includes a set screw connecting member, and the set screw connecting member can be adaptively connected to the connecting portion; An opening portion is provided on a side wall of the follower connecting member, and the length of the opening portion extends along the length direction of the follower connecting member. When the follower connecting member and the connecting portion are in a connected state, the width of the opening portion decreases; A deformation groove is provided on an outer wall surface of the follower connecting member.

4. The crankshaft mechanism according to claim 1, characterized in that The rotating connecting member includes: A connecting inner ring, the follower connecting member passes through the connecting inner ring; A connecting outer ring, the connecting inner ring is rotatably connected to the connecting outer ring.

5. The crankshaft mechanism according to claim 4, characterized in that, The crankshaft mechanism further includes a fixed seat, and the fixed seat is connected to the installation member; the connecting outer ring is connected to the fixed seat.

6. The crankshaft mechanism according to claim 5, wherein The installation member includes: A first fixing frame; A second fixing frame, the second fixing frame is connected to the first fixing frame through a connecting member; A clamping space is provided between the first fixing frame and the second fixing frame, and the fixed seat is arranged in the clamping space; The first fixing frame and the second fixing frame are respectively provided with connecting plates; The first fixing frame is provided with a first through hole, and a second through hole is provided at a position of the second fixing frame opposite to the first through hole, and the first through hole, the second through hole and the fixed seat are coaxially arranged.

7. The crankshaft mechanism according to claim 3, characterized in that, The bearing assembly further includes a set screw washer, and the set screw washer is arranged between the set screw connecting member and the rotating connecting member.

8. The crankshaft mechanism according to any one of claims 1 to 7, characterized in that, An adhesive is coated on a wall surface where the follower connecting member and the straight crank segment are in contact with each other.

9. The crankshaft mechanism according to any one of claims 1 to 7, characterized in that, The crankshaft mechanism further includes a dust cover, and the dust cover is arranged on a side portion of the installation member.

10. A straw walker, characterized in that, Including the crankshaft mechanism according to any one of claims 1 to 9; the number of the crankshaft mechanisms is at least two, and one of the crankshaft mechanisms is a driving shaft; The straw walker further includes a key box, and the installation member is connected to the key box.

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