A reduction gearbox and a roof bolter

Abstract

The application discloses a speed reducer and a roof drilling machine, and relates to the technical field of speed reducers, which comprises a base, a guide column and a telescopic oil cylinder are installed on the base; a box body is movably installed on the guide column, and the telescopic oil cylinder is used for driving the box body to vertically ascend and descend along the guide column; an ear part is integrally formed with the box body; the ear part is provided with a first mounting hole, and the guide column is arranged in the first mounting hole; a buckling assembly is installed on the fixed end of the telescopic oil cylinder; a locking assembly is used for connecting the buckling assembly and the box body; and a diagonal bracing assembly comprises a first connecting piece, a second connecting piece and a diagonal bracing rod, the first connecting piece is sleeved on the guide column and can slide along the guide column, the second connecting piece is installed on the box body, the first end of the diagonal bracing rod in the length direction is hinged to the first connecting piece, and the second end of the diagonal bracing rod in the length direction is slidably installed on the second connecting piece. According to the speed reducer, the assembly difficulty is low, the stress condition of the guide column can be improved, and the problem of box body scratching the column can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mine machinery, in particular to a reduction gearbox and a raise borer. BACKGROUND

[0002] As an important raise construction machinery, the raise borer has been widely used in various fields such as mines, tunnels, municipal construction, and water conservancy projects. The existing raise borer propulsion support system is mainly of the two-column two-cylinder type. The two-column two-cylinder type raise borer refers to having only two columns and two propulsion cylinders. The columns are used for anti-torsion and guiding, and the propulsion cylinders are used to drive the reduction gearbox to lift. The two propulsion cylinders are fixed on both sides of the rotation center of the reduction gearbox by bolts, and the two columns are fixed at the back of the reduction gearbox by bolts. The existing two-column two-cylinder type raise borer has problems such as high assembly difficulty, poor stress condition of the columns, and box body scratching the columns. SUMMARY

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application provides a reduction gearbox with low assembly difficulty, which can improve the stress condition of the guide column, reduce the occurrence of box body scratching the column, and prolong the service life of the equipment.

[0004] The present application also provides a raise borer with the above-mentioned reduction gearbox.

[0005] According to the reduction gearbox of the first aspect of the present application, the reduction gearbox comprises:

[0006] a base, which is provided with a guide column and a telescopic cylinder;

[0007] a box body, which is movably installed on the guide column; a fixed end of the telescopic cylinder is connected to the box body, and a movable end of the telescopic cylinder is connected to the base, and the telescopic cylinder is used to drive the box body to vertically lift along the guide column;

[0008] an ear part, which is connected to the box body as an integral structure; the ear part is provided with a first mounting hole, and the guide column is arranged in the first mounting hole;

[0009] a buckling assembly, which is installed on the fixed end of the telescopic cylinder;

[0010] a locking assembly, which is used to connect the buckling assembly and the box body;

[0011] a diagonal bracing assembly, which comprises a first connecting piece, a second connecting piece, and a diagonal bracing rod; the first connecting piece is sleeved on the guide column and can slide along the guide column; the second connecting piece is installed on the box body; and the first end of the diagonal bracing rod in the length direction is hingedly connected to the first connecting piece, and the second end of the diagonal bracing rod in the length direction is slidingly installed on the second connecting piece.

[0012] The reduction gearbox according to the embodiment of the present application has at least the following beneficial effects:

[0013] By setting the ears to be integrally formed with the box body and setting the first mounting hole in the ears for the guide column to pass through, the guide column can be positioned by its own shape, and the distance between the two guide columns does not need to be adjusted, which greatly improves the installation efficiency and reduces the installation difficulty; by setting the buckling assembly to be connected with the telescopic oil cylinder first, and then connecting the buckling assembly and the box body by using the locking assembly, compared with directly installing the telescopic oil cylinder on the box body, the installation difficulty is reduced, the positioning efficiency is higher, and the horizontal state of the box body can be adjusted by the tightening bolt of the locking assembly, and the adjustment mode is more simple and efficient; by setting the diagonal brace assembly between the box body and the guide column, the diagonal brace assembly includes a diagonal brace rod, the diagonal brace rod can better disperse the stress of the box body to the axial direction of the guide column, thereby improving the stress condition of the guide column, reducing the risk of problems such as poor sliding and scratching of the column on the box body, and prolonging the service life of the equipment.

[0014] According to some embodiments of the present application, the box body is provided with a mounting groove, and the buckling assembly is provided with a limiting plate, which is installed in the mounting groove;

[0015] The locking assembly includes a contact block group and a tightening bolt, the contact block group is installed in the mounting groove and abuts against the limiting plate, and the tightening bolt is used to push the contact block group and the limiting plate to abut against each other to connect the buckling assembly and the box body.

[0016] According to some embodiments of the present application, the end of the limiting plate is provided with a hook portion, the hook portion abuts against the outer side wall of the contact block group, and the limiting plate abuts against the end face of the contact block group.

[0017] According to some embodiments of the present application, the side wall of the mounting groove is provided with a sliding groove, and the contact block group is slidingly installed in the sliding groove.

[0018] According to some embodiments of the present application, the contact block group includes a first contact block and a second contact block, and the first contact block is slidingly installed in the second contact block.

[0019] According to some embodiments of the present application, the locking assembly further includes a cover plate, the tightening bolt is threadedly connected with the cover plate, and the tightening bolt passes through the cover plate to abut against the contact block group.

[0020] According to some embodiments of the present application, the outer side of the mounting groove is provided with a positioning block, and the positioning block is provided with a positioning hole; the middle part of the cover plate is provided with an insertion plate, and the insertion plate is inserted in the positioning hole to pre-position the cover plate.

[0021] The length direction of the cover plate is connected with the box body by fasteners.

[0022] According to some embodiments of the present invention, the first connector is installed below the housing; the second connector is provided with a sliding groove, the length direction of the sliding groove is vertical, and the second end of the diagonal brace in the length direction is slidably installed in the sliding groove.

[0023] According to some embodiments of the present invention, the diagonal brace assembly further includes an elastic element; the housing is provided with a stop block protruding from its surface, and a stop member is provided at the second end of the diagonal brace in the length direction; the two ends of the elastic element are respectively connected to the stop block and the stop member.

[0024] According to a second aspect of the present invention, the well drilling rig includes the aforementioned gearbox; since the well drilling rig includes the aforementioned gearbox, it has at least all the beneficial effects of the gearbox, which will not be elaborated here.

[0025] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0027] Figure 1 This is a side view of the gearbox according to a first aspect embodiment of the present invention;

[0028] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0029] Figure 3 for Figure 1 Schematic diagram of the middle box structure;

[0030] Figure 4 for Figure 1 Assembly diagram of the middle housing, fastening components, and locking components;

[0031] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0032] Figure 6 for Figure 3 Sectional view and enlarged partial view of the middle box.

[0033] Icon labels:

[0034] Base 100, guide column 110, reinforcing plate 111, telescopic cylinder 120, round nut 121;

[0035] The box 200, the mounting groove 210, the sliding rail 211, the containing groove 212, the positioning block 220, the positioning hole 221, the resisting block 230, the ear 240, the first mounting hole 241;

[0036] The buckle assembly 300, the limiting plate 310, the hook part 311, the first buckle plate 320, the second buckle plate 330, the second mounting hole 340;

[0037] The locking assembly 400, the contact block group 410, the first contact block 411, the second contact block 412, the abutting hole 413, the abutting bolt 420, the cover plate 430, the plug plate 431;

[0038] The inclined support assembly 500, the first connecting piece 510, the second connecting piece 520, the sliding groove 521, the inclined support rod 530, the abutting piece 531, the elastic piece 540. DETAILED DESCRIPTION

[0039] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the present application, and cannot be understood as a limitation of the present application.

[0040] In the description of the present application, it is understood that the orientation description, such as the upper, lower, etc. The orientation or positional relationship shown in the drawing is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0041] In the description of the present application, the plurality refers to two or more. If there is a description of the first, second, only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the order of indicated technical features.

[0042] In the description of the present application, unless otherwise explicitly limited, the words such as setting, mounting, connecting, etc. Should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0043] Reference Figures 1 to 6The speed reducer of the first aspect of the present application comprises a base 100, a box body 200, a telescopic oil cylinder 120 and a guide column 110, the box body 200 is provided with a rotating device for connecting with a drill rod and driving the drill rod to work, the box body 200 is movably installed on the guide column 110, the fixed end of the telescopic oil cylinder 120 is connected with the box body 200, the movable end of the telescopic oil cylinder 120 is connected with the base 100, and the telescopic oil cylinder 120 is used for driving the box body 200 to vertically ascend and descend along the guide column 110. The telescopic oil cylinder 120 and the guide column 110 are both assembled on the box body 200 through fasteners, and the fasteners are usually bolts. Since the speed reducer device has a large volume, a plurality of bolts are required to connect the guide column 110 and the telescopic oil cylinder 120, so that a plurality of bolts need to be aligned with a plurality of bolt holes during installation of the guide column 110 and the telescopic oil cylinder 120, thereby increasing the difficulty of assembly and reducing the assembly efficiency. In addition, the rotating device of the box body 200 bears the lifting force and torque during the drilling rig roof construction, and the column is located at the rear side of the rotating device of the box body 200, so that the support of the column to the box body 200 is cantilever support, which leads to poor stress condition of the column and causes problems such as poor sliding of the box body 200 up and down, scratching of the column and the like. In order to solve the above technical problems, the present application provides a speed reducer which can improve the stress condition of the column, reduce the occurrence of problems such as poor sliding of the box body 200 up and down, scratching of the column and the like, and prolong the service life of the device. The following will be described in detail with reference to the accompanying drawings Figures 1 to 6 The speed reducer of the present application will be described in detail.

[0044] In the embodiment of the present application, the speed reducer further comprises an ear part 240, the ear part 240 is connected with the box body 200 as an integral structure, and the ear part 240 is provided with a first mounting hole 241. The guide column 110 passes through the first mounting hole 241. The ear part 240 is connected with the box body 200 as an integral structure, which can form an integral structure with the ear part 240 and the box body 200 during pouring. By connecting the ear part 240 with the box body 200 as an integral structure, the ear part 240 can be positioned by using the shape of the guide column 110, and the distance between the two guide columns 110 does not need to be adjusted, which greatly improves the installation efficiency and reduces the installation difficulty.

[0045] Referring to Figure 3 , Figure 4 As shown in the figure, the left and right sides of the rear part of the box body 200 are both provided with an ear part 240, and the two ear parts 240 are both provided with a first mounting hole 241; the guide column 110 is provided with two guide columns 110 corresponding to the first mounting hole 241, the two guide columns 110 correspond to the two first mounting holes 241 one by one, and the two guide columns 110 are respectively arranged in the two first mounting holes 241. In order to improve the stability of the box body 200, the top parts of the two guide columns 110 are connected through a reinforcing plate 111. Referring to Figure 1As shown, the reinforcing plate 111 is a long strip-shaped plate, both ends of the length direction of the reinforcing plate 111 are provided with through holes for the guide column 110 to pass through, and the top portions of the two guide columns 110 are respectively arranged in the two through holes. By connecting the two guide columns 110 through the reinforcing plate 111, the two guide columns 110 can be connected as a whole, thereby improving the torsion resistance and bending resistance of the guide column 110, and further improving the service life of the guide column 110, and reducing the probability of problems such as poor sliding of the box body 200 up and down, scratching the guide column 110, and the like.

[0046] In the embodiment of the application, the reduction gearbox further comprises a diagonal brace assembly 500, as shown in Figure 1 、 Figure 2 As shown, the diagonal brace assembly 500 comprises a first connecting piece 510, a second connecting piece 520 and a diagonal brace rod 530, the first connecting piece 510 is sleeved on the guide column 110 and can slide along the guide column 110, the second connecting piece 520 is installed on the box body 200, the first end of the length direction of the diagonal brace rod 530 is hinged to the first connecting piece 510, and the second end of the length direction of the diagonal brace rod 530 is slidingly installed on the second connecting piece 520. By arranging the diagonal brace assembly 500 between the box body 200 and the guide column 110, the diagonal brace assembly 500 comprises the diagonal brace rod 530, the diagonal brace rod 530 can better disperse the stress of the box body 200 to the axial direction of the guide column 110, thereby improving the stress condition of the guide column 110, reducing the risk of problems such as poor sliding of the box body 200 up and down, scratching the column, and prolonging the service life of the equipment.

[0047] In the embodiment of the application, since the guide column 110 is provided with two guide columns, the diagonal brace assembly 500 is also provided with two diagonal brace assemblies, the two diagonal brace assemblies 500 are respectively installed on the left and right sides of the box body 200, and the two diagonal brace assemblies 500 are respectively used to connect the two guide columns 110 and the box body 200. By arranging the two diagonal brace assemblies 500 to be connected with the two guide columns 110 respectively, the stress of the two guide columns 110 can be evenly distributed, and the weight of the box body 200 can also be better and more evenly shared, thereby avoiding problems such as single guide column 110 eccentric wear.

[0048] In the embodiment of the application, as shown in Figure 1As shown, the first connecting piece 510 is sleeved on the guide column 110, the first connecting piece 510 is provided with a radially protruding connecting structure, the first end of the length direction of the inclined support rod 530 is hinged with the connecting structure, and the first connecting piece 510 is arranged below the box body 200. Specifically, when the box body 200 is at a low position, since the bottom of the guide column 110 is connected with the base 100, the torque is short, and the operation of the box body 200 will not cause great influence on the guide column 110; when the box body 200 is at a higher position, since the torque is lengthened, the operation of the box body 200 will cause great bending moment of the guide column 110, thereby causing the guide column 110 to be bent and deformed, so that the box body 200 will be scraped with the guide column 110 when vertically lifting; at this time, if the first connecting piece 510 is installed above the box body 200, when the guide column 110 is bent and deformed, the center of gravity of the box body 200 will still be outside the guide column 110 and at a higher position of the guide column 110, so that the inclined support assembly 500 cannot effectively disperse the torque borne by the guide column 110; and the first connecting piece 510 is arranged below the box body 200, so that the weight borne by the box body 200 is only partially transmitted to the axial direction of the guide column 110 along the inclined support rod 530 and extends downward, thereby improving the stress condition of the guide column 110.

[0049] In addition, referring to Figure 1 As shown, a triangle is formed between the inclined support rod 530, the guide column 110 and the box body 200, the triangle has stability, so that the inclined support assembly 500 can effectively improve the stability of the connection between the box body 200 and the guide column 110.

[0050] In the embodiment of the present application, the fixed end of the telescopic oil cylinder 120 is connected with the box body 200 through a round nut 121, and the height of the first connecting piece 510 in the vertical direction is not greater than the height of the round nut 121 in the vertical direction. Specifically, taking Figure 1 for example, if the movable end of the telescopic oil cylinder 120 is completely retracted, the box body 200 will be at the lowest position, at this time, the round nut 121 is basically in contact with the base 100, in order to avoid the influence of the first connecting piece 510 on the telescopic movement of the telescopic oil cylinder 120, so that the box body 200 can still move to the lowest position, therefore, the height of the first connecting piece 510 in the vertical direction is not greater than the height of the round nut 121 in the vertical direction.

[0051] In the embodiment of the present application, the second connecting piece 520 is provided with a sliding groove 521, and the second end of the length direction of the inclined support rod 530 is slidingly installed in the sliding groove 521. Specifically, referring to Figure 1 , Figure 2As shown, the length direction of the sliding groove 521 is vertical direction, when the movable end of the telescopic oil cylinder 120 is gradually retracted, the box body 200 will be lowered, and then drive the first connecting piece 510 to slide downward along the guide column 110, and the first connecting piece 510 will be first slid downward to the position of contacting with the base 100. When the first connecting piece 510 is slid to the position of contacting with the base 100, and the box body 200 continues to be lowered, the second end of the length direction of the inclined support rod 530 will slide upward along the sliding groove 521, and then the first connecting piece 510 is lifted relative to the guide column 110, until the box body 200 is lowered to the position of the circular nut 121 contacting with the base 100.

[0052] In the embodiment of the present application, when the second end of the length direction of the inclined support rod 530 contacts with the bottom end of the sliding groove 521, the spacing between the first connecting piece 510 and the box body 200 is the largest at this time, in order to facilitate understanding, which is defined as the maximum set spacing in the embodiment; it is conceivable that the maximum set spacing should be not greater than the length of the sliding groove 521 in the vertical direction, so as to ensure that when the box body 200 is slid to the lowest position, the first connecting piece 510 has enough distance to rise, and will not cause damage to the inclined support assembly 500.

[0053] In the embodiment of the present application, the inclined support assembly 500 further comprises a resilient member 540; the box body 200 is provided with a protruding block 230 on the surface thereof, the second end of the length direction of the inclined support rod 530 is provided with an abutting piece 531, and the two ends of the resilient member 540 are connected with the protruding block 230 and the abutting piece 531, respectively. Specifically, referring to Figure 1 As shown, the protruding block 230 is arranged above the second connecting piece 520, and the length extension direction of the resilient member 540 is parallel to the length extension direction of the sliding groove 521. The resilient member 540 is always in a compressed state, and under the condition that the inclined support assembly 500 is not subjected to external force, the resilient member 540 will push the second end of the length direction of the inclined support rod 530, so that the second end of the length direction of the inclined support rod 530 contacts with the bottom of the sliding groove 521, thereby ensuring that the inclined support rod 530 can always form a stable triangle with the box body 200 and the guide column 110, and further ensuring that the inclined support assembly 500 can always play a role in improving the stress adjustment of the guide column 110. The resilient member 540 is preferably a spring, and the outer periphery of the spring is preferably covered with a protective layer, thereby prolonging the service life of the resilient member 540 in harsh environments such as mines.

[0054] In the embodiment of the present application, the reduction gearbox further comprises a buckling assembly 300 and a locking assembly 400, the buckling assembly 300 is installed on the telescopic oil cylinder 120, and the locking assembly 400 is used to connect the buckling assembly 300 and the buckling assembly 300, thereby connecting the telescopic oil cylinder 120 with the box body 200. Specifically, referring to Figure 3 、 Figure 4As shown, the box body 200 is provided with a mounting groove 210, the buckling assembly 300 is provided with a limiting plate 310, and the limiting plate 310 is mounted in the mounting groove 210; the locking assembly 400 includes a contact block group 410 and a pressing bolt 420, the contact block group 410 is mounted in the mounting groove 210 and abuts against the limiting plate 310, and the pressing bolt 420 is used to push the contact block group 410 to abut against the limiting plate 310, so as to complete the connection between the buckling assembly 300 and the box body 200, and further realize the connection between the telescopic oil cylinder 120 and the box body 200. By setting the buckling assembly 300 to be connected with the telescopic oil cylinder 120 first, and then using the locking assembly 400 to connect the buckling assembly 300 and the box body 200, compared with directly mounting the telescopic oil cylinder 120 on the box body 200, the installation difficulty is reduced, the positioning efficiency is higher, and the horizontal state of the box body 200 can be adjusted through the pressing bolt 420 of the locking assembly 400, and the adjustment mode is more simple and efficient.

[0055] It should be understood that, as known from the above, the fixed end of the telescopic oil cylinder 120 is connected with the box body 200 through the round nut 121, and the fixed end of the telescopic oil cylinder 120 is connected with the box body 200 through the buckling assembly 300, so the round nut 121 is actually mounted below the buckling assembly 300. The buckling assembly 300 is mounted outside the telescopic oil cylinder 120, but under the action of external force, the fixed end of the telescopic oil cylinder 120 and the buckling assembly 300 can still relatively displace, that is, under the action of external force, the buckling assembly 300 can still slide along the fixed end of the telescopic oil cylinder 120, so the round nut 121 needs to be set to fix the relative position of the buckling assembly 300 and the telescopic oil cylinder 120, so that the buckling assembly 300 cannot slide along the fixed end of the telescopic oil cylinder 120.

[0056] Referring to Figure 3 , Figure 4 As shown, the left and right sides of the box body 200 are both provided with the buckling assembly 300 and the locking assembly 400, so the left and right sides of the box body 200 are both provided with the telescopic oil cylinder 120.

[0057] In the embodiment of the present application, the buckling assembly 300 includes a first buckling plate 320 and a second buckling plate 330, the first buckling plate 320 is connected with the second buckling plate 330 through a fastener, a second mounting hole 340 for the telescopic oil cylinder 120 to pass through is arranged between the first buckling plate 320 and the second buckling plate 330; the limiting plate 310 is arranged on the side of the first buckling plate 320 away from the second buckling plate 330. Specifically, referring to Figure 3 , Figure 4As shown, the first buckling plate 320 is provided with a semicircular groove on the side facing the second buckling plate 330, and the second buckling plate 330 is also provided with a semicircular groove on the side facing the first buckling plate 320, and the two semicircular grooves are folded to form the second mounting hole 340; the fastener is preferably a bolt. When connecting the telescopic oil cylinder 120 and the box body 200, the buckling assembly 300 is first installed on the telescopic oil cylinder 120, and then the buckling assembly 300 is connected with the box body 200. Since the volume and weight of the buckling assembly 300 are not large, the difficulty of installing the buckling assembly 300 on the telescopic oil cylinder 120 is not high, and by reducing the connection difficulty of the buckling assembly 300 and the box body 200, the difficulty of connecting the telescopic oil cylinder 120 and the box body 200 can be effectively reduced.

[0058] In the embodiment of the application, the end of the limiting plate 310 is provided with a hook portion 311, the hook portion 311 abuts against the outer side wall of the contact block group 410, and the limiting plate 310 abuts against the end face of the contact block group 410. Specifically, referring to Figure 5 、 Figure 6 As shown, the mounting groove 210 is provided with an accommodating groove 212 in communication with the mounting groove 210, and when the limiting plate 310 is installed in the mounting groove 210, the hook portion 311 will enter the accommodating groove 212; the hook portion 311 abuts against the outer side wall of the contact block group 410, which is used to prevent the limiting plate 310 from being separated from the box body 200; and the limiting plate 310 abuts against the end face of the contact block group 410, so that the box body 200 can be leveled by adjusting the contact block group 410.

[0059] In the embodiment of the application, the mounting groove 210 of the box body 200 is provided with a plurality of mounting grooves 210, and the limiting plate 310 is provided with a plurality of limiting plates 310 corresponding to the mounting grooves 210; referring to Figure 4 、 Figure 5 As shown, the box body 200 is provided with mounting grooves 210 on the opposite left and right sides, and specifically, the box body 200 is provided with four mounting grooves 210 on the left side and the right side, and the four mounting grooves 210 on the left side or the right side are divided into an upper groove group and a lower groove group, the upper groove group includes two mounting grooves 210, and the lower groove group also includes two mounting grooves 210, and the upper groove group and the lower groove group are mirror-symmetric along a horizontal plane. Correspondingly, the side of the first buckling plate 320 away from the second buckling plate 330 is also provided with four limiting plates 310, and the four limiting plates 310 are also divided into an upper plate group and a lower plate group, the upper plate group includes two limiting plates 310, and the two limiting plates 310 of the upper plate group correspond to the two mounting grooves 210 of the upper groove group one by one; the lower plate group also includes two limiting plates 310, and the two limiting plates 310 of the lower plate group correspond to the two mounting grooves 210 of the lower groove group one by one.

[0060] Further, as shown in Figure 5For example, the hook portion 311 of the limiting plate 310 of the upper plate set faces upward, and the hook portion 311 of the limiting plate 310 of the lower plate set faces downward, so as to not only facilitate the installation of the locking assembly 400, but also ensure the stability of the connection between the first buckling plate 320 and the box body 200.

[0061] In the embodiment of the present application, the side wall of the mounting groove 210 is provided with a sliding rail 211, and the contact block set 410 is slidingly mounted on the sliding rail 211. Referring to Figure 5 As shown, it is conceivable that the contact block set 410 can be mounted in the mounting groove 210 without the sliding rail 211, but the sliding rail 211 is provided to connect with the contact block set 410, so as to slidingly limit the contact block set 410, and also ensure the stability of the connection between the contact block set 410 and the box body 200, thereby ensuring the stability of the connection between the buckling assembly 300 and the box body 200, and further improving the stability of the connection between the telescopic oil cylinder 120 and the box body 200.

[0062] In the embodiment of the present application, the contact block set 410 includes a first contact block 411 and a second contact block 412, and the first contact block 411 is slidingly mounted on the second contact block 412. Specifically, referring to Figure 5 As shown, the contact block set 410 is divided into the first contact block 411 and the second contact block 412, so as to facilitate the separate adjustment of the contact block set 410, and further to finely adjust the pressing force of the contact block set 410 against the limiting plate 310, thereby facilitating the adjustment of the box body 200 to a horizontal state. During installation, the limiting plate 310 is first inserted into the mounting groove 210, then the contact block set 410 is installed, and finally the locking assembly 400 is installed to fix the contact block set 410, thereby completing the connection between the buckling assembly 300 and the box body 200; the adjustment of the locking assembly 400 to the pressing force of the limiting plate 310 can realize the leveling of the box body 200; since the contact block set 410 and the limiting plate 310 are in surface contact, when the contact block set 410 is pressed by the locking assembly 400, the box body 200 is basically leveled, and there is no need for excessive adjustment, which greatly improves the installation efficiency and reduces the assembly difficulty.

[0063] It is conceivable that the contact block set 410 can also be provided as a whole.

[0064] In the embodiment of the present application, the locking assembly 400 further includes a cover plate 430, and the pressing bolt 420 is threadedly connected with the cover plate 430; the pressing bolt 420 passes through the cover plate 430 to press against the contact block set 410. Specifically, referring to Figure 5As shown, the cover plate 430 is connected with the box body 200, the abutting bolt 420 is threadedly connected with the cover plate 430, and then the end of the abutting bolt 420 abuts against the top of the contact block group 410. The top of the contact block group 410 is provided with an abutting hole 413 for the abutting bolt 420 to insert, and the cover plate 430 is provided with a threaded hole for connecting with the abutting bolt 420. When the cover plate 430 is connected with the box body 200, the threaded hole is aligned with the abutting hole 413. The abutting hole 413 can effectively prevent the abutting bolt 420 from deviating and causing the abutting bolt 420 to slip, and the abutting hole 413 is also located at the center of the contact block group, so that the force applied by the contact block group to the limiting plate 310 can be more uniform.

[0065] In the embodiment of the present application, the outer side of the mounting groove 210 is provided with a positioning block 220, the positioning block 220 is provided with a positioning hole 221, and the cover plate 430 is partially inserted in the positioning hole 221 to pre-position the cover plate 430. Specifically, referring to Figure 3 As shown, the lengthwise two ends of the cover plate 430 are connected with the box body 200 through fasteners, and the middle part of the cover plate 430 is provided with an insertion plate 431 which is inserted in the positioning hole 221. Since the cover plate 430 needs to bear the reaction force of the abutting bolt 420 abutting against the contact block group 410, the cover plate 430 needs to be effectively fixed, and therefore the middle part and the two ends of the cover plate 430 are all limited. The pre-positioning of the cover plate 430 by the insertion plate 431 and the positioning hole 221 can effectively improve the installation efficiency of the cover plate 430, and the insertion plate 431 and the positioning hole 221 can also prevent the middle part of the cover plate 430 from arching. In addition, the cover plate 430 needs to have sufficient structural strength and not be easily deformed, and the fastener for connecting the cover plate 430 and the box body 200 can be a bolt or the like.

[0066] The sky drill of the second aspect embodiment of the present application comprises the above-mentioned speed reducer, and therefore at least has all the beneficial effects of the speed reducer, which will not be repeated here.

[0067] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application.

[0068] The embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application.

Claims

1. A reduction gearbox characterised in that, The application relates to a speed reducer, which comprises the following parts: a base, which is provided with a guide column and a telescopic oil cylinder; a box body, which is movably installed on the guide column; the fixed end of the telescopic oil cylinder is connected with the box body, the movable end of the telescopic oil cylinder is connected with the base, and the telescopic oil cylinder is used for driving the box body to vertically ascend and descend along the guide column; an ear part, which is integrally connected with the box body; the ear part is provided with a first mounting hole, and the guide column passes through the first mounting hole; a buckling assembly, which is installed on the fixed end of the telescopic oil cylinder; a locking assembly, which is used for connecting the buckling assembly and the box body; a diagonal bracing assembly, which comprises a first connecting piece, a second connecting piece and a diagonal bracing rod; the first connecting piece is sleeved on the guide column and can slide along the guide column; the second connecting piece is installed on the box body; and the first end of the diagonal bracing rod in the length direction is hingedly connected with the first connecting piece, and the second end of the diagonal bracing rod in the length direction is slidably installed on the second connecting piece.

2. The reduction gearbox of claim 1, characterized in that: The box body is provided with a mounting groove, and the buckling assembly is provided with a limiting plate; the limiting plate is installed in the mounting groove; the locking assembly comprises a contact block group and a pressing bolt; the contact block group is installed in the mounting groove and abuts against the limiting plate; and the pressing bolt is used for pushing the contact block group to abut against the limiting plate, so as to connect the buckling assembly and the box body.

3. The reduction gearbox of claim 2, wherein: The end of the limiting plate is provided with a hook part, the hook part abuts against the outer side wall of the contact block group, and the limiting plate abuts against the end face of the contact block group.

4. The reduction gearbox of claim 2, wherein: The side wall of the mounting groove is provided with a sliding groove, and the contact block group is slidably installed in the sliding groove.

5. The reduction gearbox of claim 4, wherein: The contact block group comprises a first contact block and a second contact block; the first contact block is slidably installed in the second contact block.

6. The reduction gearbox of claim 2, wherein: The locking assembly further comprises a cover plate; the pressing bolt is threadedly connected with the cover plate; and the pressing bolt passes through the cover plate to abut against the contact block group.

7. The reduction gearbox of claim 6, characterized in that: The outer side of the mounting groove is provided with a positioning block, and the positioning block is provided with a positioning hole; the middle part of the cover plate is provided with an insertion plate, and the insertion plate passes through the positioning hole to pre-position the cover plate; the length direction two ends of the cover plate are connected with the box body through fasteners.

8. The reduction gearbox of claim 1, wherein: The first connecting piece is installed below the box body; the second connecting piece is provided with a sliding groove; the length direction of the sliding groove is a vertical direction; and the second end of the diagonal bracing rod in the length direction is slidably installed in the sliding groove.

9. The reduction gearbox of claim 8, characterized in that: The diagonal bracing assembly further comprises an elastic piece; the box body is provided with an abutting block protruding from the surface of the box body; the second end of the diagonal bracing rod in the length direction is provided with an abutting piece; and the two ends of the elastic piece are connected with the abutting block and the abutting piece respectively.

10. A roof drill, characterized by: The application further relates to a speed reducer, which comprises the speed reducer according to any one of claims 1 to 9.

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