阅读说明：本技术 一种双链防漂自清扫埋刮板输送机 (Double-chain anti-floating self-cleaning buried scraper conveyor ) 是由 龚学林 于 2021-10-20 设计创作，主要内容包括：本发明涉及一种双链防漂自清扫埋刮板输送机,包括组合式头部、驱动装置、过渡段、中间段、刮板链条、张紧尾部,组合式头部、过渡段、中间段、张紧尾部依次固定连接；驱动装置安装到组合式头部上,组合式头部内安装有头轴,头轴上固定头轮；张紧尾部内安装尾轴,尾轴上固定尾轮；刮板链条的头、尾部分别套装在头轮、尾轮上,驱动装置的动力输出轮连接头轮；刮板链条上依次固定A型刮板、B型刮板、C型刮板；张紧尾部安装有张紧装置,尾轴安装在张紧装置上。本申请的埋刮板输送机可在传送物料时,自动清理物料、防止漂链,采用全封闭结构,可防水防尘,避免影响环境,通过在尾部设置张紧装置,可以有效的减少载荷变化对输送机的冲击。(The invention relates to a double-chain anti-floating self-cleaning buried scraper conveyor which comprises a combined head part, a driving device, a transition section, a middle section, a scraper chain and a tensioning tail part, wherein the combined head part, the transition section, the middle section and the tensioning tail part are fixedly connected in sequence; the driving device is arranged on the combined head, a head shaft is arranged in the combined head, and a head wheel is fixed on the head shaft; a tail shaft is arranged in the tensioning tail part, and a tail wheel is fixed on the tail shaft; the head and the tail of the scraper chain are respectively sleeved on a head wheel and a tail wheel, and a power output wheel of the driving device is connected with the head wheel; an A-type scraper, a B-type scraper and a C-type scraper are fixed on the scraper chain in sequence; the tensioning tail part is provided with a tensioning device, and the tail shaft is arranged on the tensioning device. The buried scraper conveyor can automatically clean materials and prevent floating chains when the materials are conveyed, adopts a fully-closed structure, can prevent water and dust, avoids influencing the environment, and can effectively reduce the impact of load change on the conveyor by arranging the tensioning device at the tail part.)

1. The double-chain anti-floating self-cleaning buried scraper conveyor is characterized by comprising a combined head (1), a driving device (2), a transition section (3), a middle section (4), a scraper chain (6) and a tensioning tail (9), wherein the combined head (1), the transition section (3), the middle section (4) and the tensioning tail (9) are fixedly connected in sequence; the driving device (2) is arranged on the combined head (1), a head shaft (105) is arranged in the combined head (1), and a head wheel (106) is fixed on the head shaft (105); a tail shaft (910) is arranged in the tensioning tail part (9), and a tail pulley (909) is fixed on the tail shaft (910); the scraper chain (6) is arranged in a cavity formed by the combined head part (1), the transition section (3), the middle section (4) and the tensioning tail part (9), the head and the tail part of the scraper chain (6) are respectively sleeved on a head wheel (106) and a tail wheel (909), and a power output wheel of the driving device (2) is connected with the head wheel (106); an A-type scraper (604), a B-type scraper (605) and a C-type scraper (606) are fixed on the scraper chain (6) in sequence; the tensioning tail part (9) is provided with a tensioning device, and the tail shaft (910) is arranged on the tensioning device.

2. The double-chain float-preventing self-cleaning buried scraper conveyor as claimed in claim 1, characterized in that the tensioning device comprises a screw rod bracket (901), a tensioning screw rod (902), a compression spring (906), a spring support (908) and a bearing assembly component (913), the tensioning screw rod (902) is fixedly connected with the screw rod bracket (901), the bearing assembly component (913) is installed on the screw rod bracket (901), and the tensioning screw rod (902) is installed on a supporting beam (905) of the tensioning tail part (9); the compression spring (906) and the spring support (908) penetrate through the tension screw rod (902) and are positioned on the rear side of the supporting cross beam (905).

3. The conveyor as claimed in claim 2, wherein two tightening nuts (904) are installed on the tension screw (902), and the two tightening nuts (904) are located on the front side of the supporting beam (905).

4. The conveyor of claim 2, wherein the tensioning device further comprises a sliding plate assembly (911) and a sealing assembly (912), the sliding plate assembly (911) is slidably mounted on the tail housing (900) of the tensioning tail (9) back and forth, the sealing assembly (912) is fixed on the sliding plate assembly (911), and the tail shaft (910) passes through the sealing assembly (912).

5. The conveyor of claim 1, wherein the middle section (4) comprises a housing consisting of a bottom plate (403), a top plate and side plates (404), a wear-resistant guide rail (401) and a cross support (402), the cross support (402) is fixed in the housing, and the wear-resistant guide rail (401) is mounted on the cross support (402).

6. The conveyor as claimed in claim 1, wherein the transition section (3) and the middle section (4) are provided with inspection doors (7) on top.

7. The conveyor of claim 1, wherein the transition section (3) and the middle section (4) are internally fixed with ship-shaped press rails (5).

8. The conveyor as claimed in claim 7, wherein the boat-shaped pressing rail (5) comprises a rail bracket (502) and a pressing chain wear-resistant rail (501) installed under the rail bracket (502).

9. The conveyor with double-chain anti-drift self-cleaning buried scraper as claimed in claim 1, characterized in that the combined head (1) further comprises a head casing (101) and a head wheel cleaning chain divider (102) installed in the head casing (101).

10. The conveyor as claimed in claim 1 or 9, wherein the combined head (1) comprises a head housing (101) and a carrier roller set (103) mounted in the head housing (101).

Technical Field

The invention relates to the technical field of buried scraper conveyors, in particular to a double-chain anti-floating self-cleaning buried scraper conveyor.

Background

The buried scraper conveyer is widely used in various industries such as thermal power, metallurgy, chemical industry, building materials, grease, ports, paper industry, renewable resource recycling and the like. In the domestic metallurgical industry, buried scraper conveyors are commonly used under waste heat boilers or electric dust collectors, but materials with large volume weight such as lead ash slag are conveyed and are subjected to moisture caking and adhered to a bottom plate and a side plate of a machine shell, so that a scraper chain floats and scrapers deform, and blockage is caused. The working conditions of fertilizer conveying in a fertilizer plant, alkali ash conveying under an alkali recovery boiler in a paper mill, lead ash conveying in lead regeneration and recycling and the like all have the defects of large temperature difference inside and outside the buried scraper conveyor, easy moisture absorption and caking of materials, adhesion to a bottom plate and a side plate of a machine shell, generation of floating chains and bending deformation of scrapers, failure of the conveyor, high difficulty in fault repair and high operation cost.

Disclosure of Invention

Based on the expression, the invention provides a double-chain anti-floating self-cleaning buried scraper conveyor, which aims to solve the problem that the existing buried scraper conveyor is easy to stick materials and cause material accumulation.

The technical scheme for solving the technical problems is as follows:

a double-chain anti-floating self-cleaning buried scraper conveyor comprises a combined head, a driving device, a transition section, a middle section, a scraper chain and a tensioning tail, wherein the combined head, the transition section, the middle section and the tensioning tail are sequentially and fixedly connected; the driving device is arranged on the combined head, a head shaft is arranged in the combined head, and a head wheel is fixed on the head shaft; a tail shaft is arranged in the tensioning tail part, and a tail wheel is fixed on the tail shaft; the scraper chain is arranged in a cavity formed by the combined head part, the transition section, the middle section and the tensioning tail part, the head part and the tail part of the scraper chain are respectively sleeved on the head wheel and the tail wheel, and the power output wheel of the driving device is connected with the head wheel; an A-type scraper, a B-type scraper and a C-type scraper are fixed on the scraper chain in sequence; the tensioning tail part is provided with a tensioning device, and the tail shaft is arranged on the tensioning device. The buried scraper conveyor can automatically clean materials and prevent floating chains when the materials are conveyed, adopts a fully-closed structure, can prevent water and dust, avoids influencing the environment, and can effectively reduce the impact of load change on the conveyor by arranging the tensioning device at the tail part.

Preferably, the tensioning device comprises a screw rod bracket, a tensioning screw rod, a compression spring, a spring support and a bearing assembly component, wherein the tensioning screw rod is fixedly connected with the screw rod bracket; the compression spring and the spring support penetrate through the tensioning screw rod and are positioned on the rear side of the supporting beam. Through setting up spring overspeed device tensioner, can adjust the tensile force of scraper chain, alleviate the impact that load change arouses, can adjust the different compression spring of controlling simultaneously, avoid the off tracking.

Preferably, two tightening nuts are mounted on the tensioning screw rod and are positioned on the front side of the supporting beam. Through setting up two tightening nuts, guarantee that scraper chain has pretension force all the time, can effectively reduce the pulse load that profile chain drive polygon effect produced.

Preferably, the tensioning device further comprises a sliding plate assembly and a sealing assembly, the sliding plate assembly is mounted on the tail shell of the tensioning tail portion in a front-back sliding mode, the sealing assembly is fixed on the sliding plate assembly, and the tail shaft penetrates through the sealing assembly. Through setting up sliding plate subassembly and seal assembly, can carry out dynamic seal to afterbody casing.

Preferably, the interlude include the shell that bottom plate, roof and curb plate are constituteed, still include wear-resisting guide rail, cross support, the cross support is fixed in the shell, wear-resisting guide rail installs on the cross support. Through set up wear-resisting guide rail at the interlude, avoid upper return stroke scraper chain to appear lax, return to the bearing chamber smoothly.

Preferably, the top of the transition section and the middle section is provided with an inspection door. The embedded scraper conveyor monitoring device is used for daily observation of the internal operation condition of the embedded scraper conveyor, and is convenient for finding problems and processing the problems in time.

Preferably, a ship-shaped pressure rail is fixed in the transition section and the middle section. The scraper chain is used for pressing the scraper chain at the lower layer, preventing floating chains, guiding the scraper chain to smoothly enter a pressing groove between the ship-shaped pressing rail and the bottom plate, and not to pass through the pressing groove.

Preferably, the ship-shaped press rail comprises a guide rail bracket and a press chain wear-resistant guide rail arranged below the guide rail bracket.

Preferably, the combined head further comprises a head casing and a head wheel cleaning chain divider arranged in the head casing. The head pulley cleaning chain divider is used for separating the scraper chain from the head pulley, and simultaneously cleaning up materials accumulated in a tooth groove of the head pulley, so that the head pulley is normally meshed with the scraper chain.

Preferably, the combined head comprises a head casing and a chain wheel set arranged in the head casing. A head wheel cleaning chain divider in the combined head assembly and a chain supporting wheel set form a chain suspension space, so that the automatic tensioning stroke of the scraper chain is effectively released.

Compared with the prior art, the technical scheme of the application has the following beneficial technical effects: the application relates to a double-chain anti-floating self-cleaning buried scraper conveyor which can automatically clean bonded materials when the materials are transported, and avoids the problem of material blockage. Through A type scraper blade and B type scraper blade, the long-pending material of zero clearance, through the overspeed device tensioner of afterbody, can provide the tensile force for scraper chain, scraper chain about can also adjusting avoids the off tracking. Through setting up the ship type and pressing the rail, avoid appearing the floating chain. By arranging the inspection window, the internal problems of the conveyor can be inspected at any time. Through setting up the head and cleaning the chain divider, can conveniently separate scraper chain and clean the head pulley.

Drawings

FIG. 1 is a schematic view of the construction of an embedded scraper conveyor of the present invention;

FIG. 2 is a view K-K of FIG. 1;

FIG. 3 is a schematic view of the modular head construction of the buried scraper conveyor of the present invention;

FIG. 4 is a top cross-sectional view of the modular head construction of the buried scraper conveyor of the present invention;

FIG. 5 is a schematic view of a chain flight configuration of the buried flight conveyor of the present invention;

FIG. 6 is a schematic structural view of a middle section of the scraper conveyor of the present invention;

FIG. 7 is a left side semi-sectional view of a middle section of the buried scraper conveyor of the present invention;

FIG. 8 is a schematic view of the tail structure of the elastic bracket of the scraper conveyor of the invention;

FIG. 9 is a top cross-sectional view of the tail of the flexible carrier of the buried scraper conveyor of the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1. a combined head; 2. a drive device; 3. a transition section; 4. a middle section; 5. pressing rails by using a ship shape; 6. a scraper chain; 7. an inspection door; 8. a feed inlet; 9. tensioning the tail; 101. a head housing; 102. a head pulley cleaning chain divider; 103. a chain supporting wheel set; 104. a head bearing assembly; 105. a head shaft; 106. a head pulley; 107. a chain supporting wheel; 108. a carrier roller bearing assembly; 109. a chain wheel supporting shaft; 401. a wear-resistant guide rail; 402. transversely supporting; 403. a base plate; 404 side plates; 501. pressing a chain wear-resistant guide rail; 502. a rail bracket; 601. a chain bar; 602. a pin shaft; 604. a type A scraper; 605. a B-type scraper; 606. a C-shaped scraper; 900. a tail housing; 901. a lead screw bracket; 902. tensioning the screw rod; 903. fixing a nut; 904. tightening the nut; 905. a support beam; 906. a compression spring; 908. a spring support; 909. a tail wheel; 910. a tail shaft; 911. a sliding plate assembly; 912. a seal assembly; 913. a bearing assembly component; 914. the sliding plate component presses the rail.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

In this embodiment, as shown in fig. 1, 3, 4, 5, 8, and 9. A double-chain anti-floating self-cleaning buried scraper conveyor comprises a combined head part 1, a driving device 2, a transition section 3, a middle section 4, a scraper chain 6 and a tensioning tail part 9, wherein the combined head part 1, the transition section 3, the middle section 4 and the tensioning tail part 9 are fixedly connected in sequence; the driving device 2 is arranged on the combined head 1, a head shaft 105 is arranged in the combined head 1, and a head wheel 106 is fixed on the head shaft 105; a tail shaft 910 is arranged in the tensioning tail part 9, and a tail wheel 909 is fixed on the tail shaft 910; the scraper chain 6 is arranged in a cavity formed by the combined head part 1, the transition section 3, the middle section 4 and the tensioning tail part 9, the head part and the tail part of the scraper chain 6 are respectively sleeved on a head wheel 106 and a tail wheel 909, and a power output wheel of the driving device 2 is connected with the head wheel 106; an A-type scraper 604, a B-type scraper 605 and a C-type scraper 606 are sequentially fixed on the scraper chain 6; the tensioning tail part 9 is provided with a tensioning device, and the tail shaft 910 is arranged on the tensioning device. The head casing 101 of the combined head 1, the casing of the transition section 3, the casing of the middle section 4 and the tail casing 900 of the tensioning tail 9 are fixedly connected in sequence through bolts to form a bearing cavity with the inside. The length of the transition section 3 is variable according to requirements, only one section is used for field installation, and the length of the middle section 4 is fixed and can be multiple sections according to field requirements. Through the design, the design strength can be greatly reduced, the utilization rate of different facilities is increased, and the inventory is reduced.

The scraper chain 6 is arranged in the bearing cavity, the front end and the rear end of the scraper chain 6 are respectively arranged on a head pulley 106 of the combined head part 1 and a tail pulley 909 of the tensioning tail part 9, and the driving device 2 on the combined head part 1 drives the head pulley 106 to rotate so as to drive the scraper chain 6 and the tail pulley 909 to rotate. In which the head shaft 105 is mounted on the head bearing assembly 104, and then the head bearing assembly 104 is fixed to the head housing 101. The lower A-type flight 604, B-type flight 605, and C-type flight 606 of the flight chain 6 are moved forward by the head pulley 106. A feed inlet 8 is arranged at the upper part of the tail casing 900 and the middle section 4, and a discharge outlet is arranged at the bottom of the head casing 101. Charging takes place at the feed inlet 8, and the dispersion is then conveyed by the scraper chain 6 to the front modular head 1 and then discharged through the discharge outlet. Referring back and forth to fig. 1 in this embodiment, the left modular head 1 is oriented forward. The A-type scraper 604, the B-type scraper 605 and the C-type scraper 606 are abutted against the inner bottom plate of the bearing cavity, the C-type scraper 606 is mainly used for conveying materials, and the A-type scraper 604 and the B-type scraper 605 are mainly used for cleaning accumulated materials in a matched mode. The tail shaft 910 is mounted to the tension tail 9 by a tensioner that can slide back and forth. The tail shaft 910 is moved rearward by the tensioning device, thereby providing tension to the scraper chain 6.

The scraper chain 6 comprises a chain rod 601, a pin shaft 602, an A-type scraper 604, a B-type scraper 605 and a C-type scraper 606, wherein the chain rod 601 is sequentially connected from front to back through the pin shaft 602. 1 piece of scraper A-type scraper 604 or B-type scraper 605 or C-type scraper 606 is welded every 2 link rods 601. Depending on the material properties and the transport capacity, the blades may be arranged in a single pitch, double pitch or multi-pitch arrangement, wherein the A-blade 604 and the B-blade 605 are a self-cleaning combination. As shown in the K-K section schematic diagram, the A-shaped scraper 604, the B-shaped scraper 605 or the C-shaped scraper 606 are designed to be high scrapers, and the high scrapers are in contact with the bottom plate 403 and the side plates 404 of the bearing cavity and are not in contact with the chain rod 601 during operation. The cleaning teeth of the bottom surface A1 of the A-type scraper 604 and the bottom surface B1 of the B-type scraper 605, the side surface A2 of the A-type scraper 604 and the side surface B2 of the B-type scraper 605, and the side surface A3 of the A-type scraper 604 and the side surface B3 of the B-type scraper 605 are respectively arranged in a staggered way. If the distance between the two teeth is set to be L, the tooth surface width and the tooth groove width are L/2, so that the A-type scraper 604 and the B-type scraper 605 assembly unit are ensured to be in gapless contact with the bottom plate 403 and the side plate 404 during operation, and gapless scraping and cleaning are realized. The C-shaped scraper 606 is designed as a floating-prevention pushing scraper, can efficiently pull materials to run towards the discharge opening, and has a floating chain prevention function. According to the characteristics of material adhesion and the like, the quantity, the proportion and the combination of the A-type scraper 604, the B-type scraper 605 and the C-type scraper 606 are selected. Meanwhile, the cleaning tooth face width and the tooth groove width of the A-type scraper 604 and the B-type scraper 605 can be L/3 and L/4.

In this embodiment, as shown in fig. 8 and 9. The tensioning device comprises a screw rod bracket 901, a tensioning screw rod 902, a compression spring 906, a spring support 908 and a bearing assembly component 913, wherein the tensioning screw rod 902 is fixedly connected with the screw rod bracket 901, the bearing assembly component 913 is installed on the screw rod bracket 901, and the tensioning screw rod 902 is installed on a supporting cross beam 905 of the tensioning tail part 9; the compression spring 906 and the spring support 908 pass through the tension screw 902 and are located at the rear side of the support beam 905. The tensioning device is mainly used for tensioning and deviation-preventing adjustment of the scraper chain 6. The bearing assembly component 913 is fixedly installed on the lead screw bracket 901, the front end of the tension lead screw 902 is fixedly connected with the lead screw bracket 901 through the fixing nut 903, the rear end of the tension lead screw 902 penetrates through the supporting cross beam 905, the tension lead screw 902 penetrates through the rear end part of the supporting cross beam 905 to install the spring support 908 and the compression spring 906, and the spring support 908 is located at two ends of the compression spring 906. The tension screw 902 is pre-tensioned by a compression spring 906. A support beam 905 is fixed to the rear end of the rear cabinet 900. Sliding plate assembly pressing rails 914 are further fixed on two sides of the tail housing 900, the lead screw bracket 901 is in sliding fit with the sliding plate assembly pressing rails 914, and the lead screw bracket 901 can slide back and forth relative to the sliding plate assembly pressing rails 914. By adjusting the tension screw 902, the pre-tightening force of the compression spring 906 is adjusted. The tail shaft 910 is mounted in a bearing of the bearing assembly 913, thereby adjusting the tension of the scraper chain 6.

In this embodiment, as shown in fig. 8 and 9. Two tightening nuts 904 are arranged on the tensioning screw rod 902, and the two tightening nuts 904 are positioned on the front side of a supporting cross beam 905. The internal tension of the scraper chain 6 is very different when the bulk material is unloaded and transported, so the tension applied to the spring is also very large. The tension of the compression spring 906 is generally set according to the state of the material being transported. Two tightening nuts 904 are arranged on the front side of the supporting cross beam 905, and the tension of the compression spring 906 is controlled by adjusting the compression amount of the compression spring 906, so that the phenomenon that the scraper chain 6 is unevenly loaded in the process from full loading to no loading, and the scraper chain 6 vibrates back and forth is avoided. The compression spring 906, the lead screw bracket 901 and the bearing assembly component 913 form an elastic bracket, so that the scraper chain 6 is always pre-tensioned, the pulse load generated by the polygonal effect of the toothed chain transmission can be effectively reduced, and the head shaft 105 and the tail shaft 909 are prevented from fatigue deformation and fracture. When the scraper chain 6 has abnormal phenomena such as clamping, collision, scraping and the like, the buffer function is achieved, and equipment accidents are prevented.

In this embodiment, as shown in fig. 8 and 9. The tensioning device also comprises a sliding plate component 911 and a sealing component 912, wherein the sliding plate component 911 is arranged on the tail shell 900 of the tensioning tail part 9 in a back-and-forth sliding mode, the sealing component 912 is fixed on the sliding plate component 911, and the tail shaft 910 penetrates through the sealing component 912. The screw bracket 901 and bearing assembly 913 reciprocate only back and forth within the slide plate assembly pressure rail 914 during operation of the buried flight conveyor. The bulk material moves in the inner cavity formed by the tail casing 900, the middle section 4 casing, the transition section 3 casing and the head casing 101, and a large amount of dust is easily generated. By providing the sealing assembly 912 at the position of the tail shaft 910 on both sides of the tail casing 900, dust can be prevented from leaking out, affecting the environment and the bearing located outside the tail casing 900. Through setting up sliding plate subassembly 911, the front and back slip of adaptable lead screw bracket 901 and bearing assembly 913 to reach dynamic dustproof effect.

In this embodiment, as shown in fig. 7. The middle section 4 comprises a housing consisting of a bottom plate 403, a top plate and side plates 404, and further comprises a wear-resistant guide rail 401 and a transverse support 402, wherein the transverse support 402 is fixed in the housing, and the wear-resistant guide rail 401 is mounted on the transverse support 402. The bottom plate 403, the top plate and the side plates 404 on two sides form a cylindrical shell, wherein the thickness of the bottom plate 403 is larger, the number of the side plates 404 is smaller, when the buried scraper conveyor runs, the bottom plate 403 and the side plates 404 bear the friction and the abrasion of materials, the design is thicker, the bottom plate 403 and the side plates 404 are prevented from being worn through after long-time running, and the top plate is mainly used for preventing dust from leaking. A transverse support 402 is horizontally welded between the side plates 404 at two sides, and a wear-resistant guide rail 401 is fixed on the transverse support 402 and is used as a track of the upper layer return scraper chain 6.

In this embodiment, as shown in fig. 1 and 6. And an inspection door 7 is arranged on the tops of the transition section 3 and the middle section 4. And the inspection doors 7 are arranged at a plurality of positions and used for daily observation of the internal operation condition of the buried scraper conveyor, so that problems can be found and treated in time. And a ship-shaped pressure rail 5 is fixed in the transition section 3 and the middle section 4. The two ends of the boat-shaped pressure rail 5 are designed into an upturned boat shape, and are mainly used for the function of a chain pressing, and the guide scraper chain 6 can smoothly enter a pressure groove between the boat-shaped pressure rail 5 and the bottom plate 403 and can pass through without obstacles. The ship-shaped press rail 5 comprises a guide rail bracket 502 and a press chain wear-resistant guide rail 501 arranged below the guide rail bracket 502. The rail bracket 502 is mounted on the side plate 404 by bolts, wherein mounting holes of the bolts are long waist-shaped round holes in the up-down direction. The chain press wear rail 501 is fixed to the lower part of the rail bracket 502. The size of the pressure groove space between the pressure chain wear-resistant guide rail 501 and the bottom plate 403 can be adjusted through the long waist circular holes in the vertical direction. The degree of compression of the scraper chain 6 can be adjusted during assembly or after wear of the wear guide 501.

In this embodiment, as shown in fig. 3 and 4. The combined head 1 also comprises a head casing 101 and a head wheel cleaning chain divider 102 arranged in the head casing 101. The head pulley cleaning chain divider 102 is mounted in the head housing 101 by bolts. The head pulley cleaning chain divider 102 can smoothly separate the scraper chain 6 from the head pulley 106 by utilizing the horizontal and vertical component forces generated by the self-weight of the return scraper chain on the head pulley 106, and simultaneously clean the accumulated materials in the tooth grooves of the head pulley 106, thereby ensuring that the head pulley 106 is normally meshed with the scraper chain 6. The combined head 1 comprises a head shell 101 and a chain wheel set 103 arranged in the head shell 101. Because the wear-resistant guide rail 401 is not arranged in the combined head part 1, the upper-layer scraper chain 6 in the combined head part 1 is supported by the chain supporting wheel group 103. A chain hanging space is formed between the head pulley cleaning chain divider 102 and the chain supporting wheel set 103 in the combined head assembly 1, and the automatic tensioning stroke of the scraper chain 6 is effectively released. The chain supporting wheel set 103 comprises a chain supporting wheel 107, a chain supporting wheel bearing assembly 108 and a chain supporting wheel shaft 109, wherein the chain supporting wheel bearing assembly 108 is fixedly arranged at two sides of the combined head 1, the chain supporting wheel shaft 109 is arranged on the chain supporting wheel bearing assembly 108, the chain supporting wheel 107 is fastened on the chain supporting wheel shaft 109, and the chain supporting wheel 107 supports the scraper chain 6 which runs in the return stroke.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.