A vertical spindle

Abstract

The vertical main shaft comprises a pipe joint, a rotor, the inside of the pipe joint has a first channel, the inside of the rotor has a second channel, the rotor is arranged with the axis in the vertical direction, the pipe joint is arranged at the upper end of the rotor, the first channel and the second channel are communicated, the second channel of the rotor can be supplied with cooling fluid through the first channel of the pipe joint, and the pipe joint has a leakage position at the joint with the rotor; further comprising a floating cylinder and a pipe disc, the floating cylinder is located below the pipe joint and at the outer circumferential side of the rotor, the pipe disc is located at the outer circumferential side of the floating cylinder, the floating cylinder is provided with a liquid passage, the pipe disc is provided with a discharge port, one end of the liquid passage can receive the fluid leaked from the leakage position, and the other end can be communicated with the discharge port to discharge the leaked fluid. According to the application, the leaked fluid can be discharged outside the main shaft, and the problem that the cooling fluid leaks when the pipe joint of the existing main shaft is damaged, resulting in damage of the motor and the rear bearing, etc. is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric spindles, in particular to a vertical spindle. BACKGROUND

[0002] The spindle generally needs to replace the tool when machining the workpiece, and generally uses a power cylinder as a driving mechanism to perform the actions of loosening and clamping the tool to realize tool replacement. However, a large amount of cutting heat is generated during the machining process, which reduces the tool life and affects the machining precision. Therefore, the tool needs to be cooled during machining, especially during deep hole machining, and the spindle needs to have a center water outlet function to cool the tool.

[0003] The center water outlet function is generally realized through a rotary joint installed at the rear end of the spindle. However, once the rotary joint is damaged, leakage is likely to occur. The leaked liquid entering the interior of the spindle can cause damage to the motor and rear bearing, increasing maintenance costs. Therefore, the rear end of the spindle needs to be waterproofed to reduce the risk of damage to the motor and rear bearing.

[0004] Patent No. CN 210937157 U provides a waterproof structure of a spindle, which prevents cutting fluid or workpiece debris from entering the interior of the spindle by setting a water blocking ring. However, only the external protection of the front end of the spindle is realized, and the internal protection of the rear end of the spindle cannot be realized.

[0005] Patent No. CN 215521960 U provides a labyrinth seal structure, which realizes the sealing and waterproofing function of the spindle by setting non-contact labyrinth seal structures at the front end and rear end of the spindle through the mutual cooperation of parts, cooperating with the drain, V-shaped sealing ring, and dustproof asbestos, etc. to prevent impurities from entering the spindle during machine operation and prolong the service life of the spindle. However, this structure is mainly used to prevent external water vapor from entering the interior of the spindle under pressure.

[0006] Since the spindle in the prior art has the technical problems of easy leakage of cooling liquid when the rotary joint is damaged, which can cause damage to the motor and rear bearing, etc., the present application designs a vertical spindle. SUMMARY

[0007] Therefore, the technical problem to be solved by the present application is to overcome the defects of the prior art, such as the easy leakage of cooling liquid when the rotary joint is damaged, which can cause damage to the motor and rear bearing, etc., thereby providing a vertical spindle.

[0008] To solve the above problems, the present application provides a vertical spindle, which comprises:

[0009] A pipe joint and a rotor, the pipe joint having a first channel inside, the rotor having a second channel inside, the rotor being arranged with its axis in a vertical direction, the pipe joint being arranged at an upper end of the rotor so that the first channel and the second channel are in communication, a cooling fluid being able to be fed into the second channel of the rotor through the first channel of the pipe joint, and the pipe joint having a leakage site at a joint with the rotor;

[0010] Further comprising a floating cylinder and a pipe disc, the floating cylinder being located below the pipe joint and at an outer periphery side of the rotor, the pipe disc being located at an outer periphery side of the floating cylinder, the floating cylinder being provided with a liquid passage, the pipe disc being provided with a discharge port, one end of the liquid passage being able to receive fluid leaked from the leakage site, the other end of the liquid passage being able to communicate with the discharge port so as to be able to discharge the leaked fluid.

[0011] In some embodiments,

[0012] The floating cylinder is annular in structure, the liquid passage penetrating from a radial inner wall to a radial outer wall of the floating cylinder, a first containing space being formed between an inner periphery of the floating cylinder and the rotor, the first containing space being located below the pipe joint, the leakage site being in communication with the first containing space so that fluid leaked at the leakage site is able to flow into the first containing space.

[0013] In some embodiments,

[0014] The rotor comprises a rotor body and a protruding portion at an upper end of the rotor body, an upper end of the protruding portion being inserted into the first channel, the second channel penetrating from the protruding portion to an inside of the rotor body; the leakage site being a gap formed between an outer wall of the portion of the protruding portion inserted into the first channel and an inner wall of the first channel, a lower end of the protruding portion being located in the first containing space.

[0015] In some embodiments,

[0016] The pipe disc is annular in structure, the discharge port penetrating from a radial inner wall to a radial outer wall of the pipe disc, an inner periphery of the pipe disc having a liquid storage groove, the discharge port being in communication with the liquid storage groove, the floating cylinder being located in the liquid storage groove, the liquid passage being in communication with the liquid storage groove so that the liquid passage is in communication with the discharge port through the liquid storage groove.

[0017] In some embodiments,

[0018] Further comprising a compression ring, the compression ring is arranged at the outer periphery of part of the rotor structure, and at least part of the compression ring is located radially inward of the floating cylinder, at least part of the compression ring is located radially inward of the pipeline disc, the upper end of the compression ring extends radially outward by a first predetermined distance and then extends downward by a second predetermined distance to form a first clamping part, the bottom end of the floating cylinder extends radially inward by a third predetermined distance to form a second clamping part, the second clamping part is located below the first clamping part, and the two can form axial limiting.

[0019] In some embodiments,

[0020] The pipeline disc further comprises a radially inner portion, the radially inner portion is located radially inward of the drain port, and the radially inner portion is opposite and connected to at least part of the drain port, the radially inner portion extends radially inward to be spaced from the compression ring, the radially inner portion is located below the bottom of the floating cylinder, and the upper end of the radially inner portion forms the liquid storage groove with the inner periphery of the pipeline disc.

[0021] In some embodiments,

[0022] In the radial direction, a first gap is formed between the first clamping part of the compression ring and the outer periphery of the main body of the compression ring, and a second gap is formed between the second clamping part of the floating cylinder and the outer periphery of the main body of the compression ring;

[0023] The pipeline disc further comprises a third clamping part, the lower end of the third clamping part is connected to the radially inner end of the radially inner portion, and the upper end of the third clamping part extends upward to be inserted into the second gap and then into the first gap.

[0024] In some embodiments,

[0025] Further comprising an oil cylinder, an oil cylinder cover and a spring cover, the oil cylinder cover is arranged at the upper end of the oil cylinder, the oil cylinder is arranged at the upper end of the floating cylinder, the oil cylinder cover, the oil cylinder and the floating cylinder are connected as a whole and can be floated up and down as a whole, the spring cover is arranged above the oil cylinder cover, and the spring cover is fixed, and an elastic structure is further arranged between the spring cover and the oil cylinder cover, the elastic structure can provide an elastic thrust to the oil cylinder cover;

[0026] When the loosening process is performed, the oil cylinder cover, the oil cylinder and the floating cylinder are integrally moved upward, the elastic structure provides the oil cylinder cover with an elastic pushing force downward to reduce the impact force of the second clamping part of the floating cylinder on the first clamping part of the compression ring; when the tightening process is performed, the oil cylinder cover, the oil cylinder and the floating cylinder are integrally moved downward, and the second clamping part of the floating cylinder is disengaged from the first clamping part of the compression ring.

[0027] In some embodiments,

[0028] Further comprising a piston arranged at the lower end of the oil cylinder cover and located at the radial inner periphery of the oil cylinder, a piston oil inlet channel is formed in the oil cylinder cover, the piston oil inlet channel can guide oil into the space between the oil cylinder cover and the piston, so as to push the piston to move downward and push the oil cylinder cover, the oil cylinder and the floating cylinder to integrally move upward when the loosening process is performed;

[0029] A piston gas inlet channel is formed in the oil cylinder cover, the piston gas inlet channel can guide gas into the space between the oil cylinder and the piston, so as to push the piston to move upward and push the oil cylinder cover, the oil cylinder and the floating cylinder to integrally move downward when the tightening process is performed.

[0030] In some embodiments,

[0031] Further comprising a piston oil inlet joint, the piston oil inlet joint is inserted into the interior of the oil cylinder cover from the exterior of the spring cover, and the internal channel of the piston oil inlet joint is in communication with the piston oil inlet channel, so as to guide oil into the piston oil inlet channel from the outside;

[0032] Further comprising a piston gas inlet joint and a piston gas inlet auxiliary channel, the piston gas inlet joint is inserted into the interior of the oil cylinder cover from the exterior of the spring cover, the piston gas inlet auxiliary channel is located in the interior of the oil cylinder, and the internal channel of the piston gas inlet joint is in communication with the piston gas inlet channel and the piston gas inlet auxiliary channel in sequence, so as to guide gas into the piston gas inlet channel from the outside.

[0033] The vertical main shaft provided by the application has the following beneficial effects:

[0034] 1.The vertical spindle water-proof structure of the present application is characterized in that a liquid passage is arranged on the floating cylinder of the vertical spindle, a drainage passage is arranged on the pipeline disc, the liquid passage is arranged below the leakage position to receive the fluid leaked from the leakage position, and the drainage passage is in communication with the liquid passage, so that the leaked fluid can be effectively drained out of the vertical spindle, effectively solving the problem that when the existing spindle rotary joint (i.e., pipe joint) is damaged, the cooling liquid is prone to leakage, which may cause damage to the motor and the rear bearing, etc.The vertical spindle water-proof structure of the present application can quickly drain the leaked liquid out of the vertical spindle when the rotary joint (i.e., pipe joint) leaks during the operation of the vertical spindle, avoiding the accumulation of the leaked liquid inside the vertical spindle, so that the liquid does not enter the motor and the rear bearing, causing the motor and the bearing to burn out and be damaged, improving the protection of the spindle motor and the rear bearing, reducing the risk of damage to the motor and the bearing, improving the operation reliability, and reducing the maintenance cost of the vertical spindle.

[0035] 2.The vertical spindle water-proof structure of the present application is characterized in that the oil cylinder cover, the floating cylinder, and the oil cylinder are arranged in an integrated up-and-down floating structure, the spring cover arranged on the upper end of the oil cylinder cover can limit the upward movement of the oil cylinder cover, the elastic structure between the spring cover and the oil cylinder cover can provide an elastic force downward to the upward movement of the oil cylinder cover, so that the impact between the second clamping part of the floating cylinder and the first clamping part of the compression ring can be reduced when the vertical spindle is loosened, and the impact of the piston movement on the vertical spindle is further reduced, so that the shaft center movement is eliminated, the service life of the vertical spindle is further improved, the oil cylinder cover, the floating cylinder, and the oil cylinder move downward as a whole when the vertical spindle is loosened, and the distance between the two clamping parts gradually increases; the piston arranged at the lower end of the oil cylinder cover and the outer periphery of the oil cylinder, and the piston oil inlet passage arranged on the oil cylinder cover can pass hydraulic oil between the piston and the oil cylinder cover when the vertical spindle is loosened, so as to effectively drive the piston to move downward, and the oil cylinder cover, the oil cylinder, and the floating cylinder move upward as a whole under the reaction force to complete the loosening; the piston gas inlet passage arranged on the oil cylinder can pass gas between the piston and the oil cylinder when the vertical spindle is loosened, effectively driving the piston to move upward, and the oil cylinder cover, the oil cylinder, and the floating cylinder move downward as a whole under the reaction force to complete the loosening. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a partial cross-sectional view of the water-proof part of the vertical spindle of the present application;

[0037] Figure 2 is a cross-sectional view of the vertical spindle of the present application showing the piston oil inlet passage and the piston gas inlet passage;

[0038] Figure 3 is a perspective view of the floating cylinder of the vertical spindle of the present application;

[0039] Figure 4 is Figure 1 is a partial enlarged view of part A in

[0040] The reference signs are as follows:

[0041] 1, pipe joint; 101, leakage position; 102, first channel; 2, cylinder cover; 201, piston oil inlet channel; 202, piston air inlet channel; 3, floating cylinder; 31, second clamping part; 301, liquid passage; 4, pipeline disc; 401, liquid storage groove; 402, drainage port; 403, radial inner side part; 404, third clamping part; 5, compression ring; 51, first clamping part; 6, rear bearing; 7, motor; 8, rotor; 801, second channel; 81, rotor main body; 82, protruding part; 9, sealing ring; 10, piston; 11, oil cylinder; 12, elastic structure; 13, spring cover; 14, oil cylinder fixing seat; 15, first containing space; 16, first gap; 17, second gap; 18, piston oil inlet joint; 19, piston air inlet joint; 20, piston air auxiliary channel. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not intended to limit the present application and its application or use in any way. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0043] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0044] The foregoing is considered as illustrative only of the principles of the application. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the application to the exact construction and practice described. Accordingly, all such variations are intended to be included within the scope of the present application as defined in the following claims, along with full equivalents thereof.

[0045] In the description of the present application, it is to be understood that the orientation terms such as "front", "back", "up", "down", "left", "right", "transverse", "vertical", "horizontal", "top", "bottom", etc. indicate the orientation or positional relationship shown in the drawings generally for the purpose of describing and simplifying the present application, and do not indicate or imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, unless otherwise specified, and therefore should not be construed as limiting the scope of the present application. The orientation terms "inner", "outer" refer to the inner and outer relative to the contour of the components themselves.

[0046] For the purpose of description, spatial relative terms, such as "above", "upper", "up", "below", "lower", etc., can be used herein for describing the spatial relationship between one device or feature and another device or feature as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the drawings. For example, if the device in the drawings is turned over, the device described as "above" or "above" the other device or structure will be positioned "below" or "below" the other device or structure. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein should be interpreted accordingly.

[0047] In addition, it should be noted that the use of the terms "first", "second", etc. to describe various components is merely intended to distinguish one component from another, and does not have a special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present application.

[0048] As Figures 1-4As shown, the present application provides a vertical spindle (preferably a vertical motorized spindle) comprising:

[0049] The pipe joint 1 has a first channel 102 in the inside, the rotor 8 has a second channel 801 in the inside, the rotor 8 is arranged with the axis in the vertical direction, the pipe joint 1 is arranged at the upper end of the rotor 8, so that the first channel 102 and the second channel 801 are in communication, the second channel 801 of the rotor 8 can be supplied with cooling fluid through the first channel 102 of the pipe joint 1, and the pipe joint 1 and the rotor 8 have a leakage site 101 at the joint;

[0050] Further comprising a floating cylinder 3 located below the pipe joint 1 and at the outer peripheral side of the rotor 8, and a pipe disc 4 located at the outer peripheral side of the floating cylinder 3, the floating cylinder 3 is provided with a liquid passage 301, and the pipe disc 4 is provided with a discharge port 402, one end of the liquid passage 301 can receive the fluid leaked from the leakage site 101, and the other end can communicate with the discharge port 402 to discharge the leaked fluid.

[0051] The present application sets a liquid passage on the floating cylinder of the vertical spindle, sets a discharge port on the pipe disc, the liquid passage is located below the leakage site to receive the fluid leaked from the leakage site, and the discharge port can communicate with the liquid passage, thereby effectively discharging the leaked fluid outside the spindle, effectively solving the problem that the cooling liquid is easy to leak when the pipe joint of the existing spindle is damaged, which can cause damage to the motor and the rear bearing, the waterproof structure of the vertical spindle of the present application can quickly discharge the leaked liquid from the spindle when the pipe joint leaks during the operation of the spindle, avoid the accumulation of the leaked liquid inside the spindle, thereby entering the motor and the rear bearing, causing the motor and the bearing to burn and damage, improve the protection of the spindle motor and the rear bearing, reduce the risk of motor and bearing damage, improve the operation reliability, and reduce the maintenance cost of the spindle.

[0052] The waterproof structure of the rear end of the spindle provided by the present application can quickly discharge the leaked liquid from the spindle when the pipe joint leaks during the operation of the spindle, especially when the pipe joint is damaged and leaks, avoid the accumulation of the leaked liquid inside the spindle, thereby entering the motor and the rear bearing, protect the spindle motor and the rear bearing, reduce the risk of motor and bearing damage, and reduce the maintenance cost of the spindle.

[0053] In some embodiments,

[0054] The floating cylinder 3 is annular in structure, the liquid passage 301 penetrates from the radial inner wall to the radial outer wall of the floating cylinder 3, the inner periphery of the floating cylinder 3 and the rotor 8 form a first containing space 15, the first containing space 15 is located below the pipe joint 1, the leakage position 101 communicates with the first containing space 15, so that the fluid leaked at the leakage position 101 can flow into the first containing space 15.

[0055] This is the preferred structure of the floating cylinder of the present application, which is annular in structure, and the liquid passage penetrates from the radial inner wall to the radial outer wall, the inner periphery of the floating cylinder communicates with the first containing space, so that the fluid in the leakage position received by the first containing space can be guided out to the radial outer periphery of the floating cylinder through the structure of the liquid passage. (The position of the liquid passage on the floating cylinder of the present application is further preferably set close to the bottom end relative to the top end.)

[0056] As shown in Figure 2 Further preferably, the bottom of the liquid passage 301 is flush with or lower than the inner bottom of the floating cylinder 3, ensuring that the leaked liquid entering the floating cylinder 3 can smoothly enter the liquid storage groove 401. The shape of the liquid passage 301 is not limited and can be a round hole, a square hole or any other shape as long as it can realize the flow of the liquid inside the main shaft.

[0057] In some embodiments,

[0058] The rotor 8 includes a rotor body and a protruding portion 82 located at the upper end of the rotor body 81, the upper end of the protruding portion 82 is inserted into the first channel 102, the second channel 801 penetrates from the protruding portion 82 to the inside of the rotor body 81; the leakage position 101 is the gap between the outer wall of the part of the protruding portion 82 inserted into the first channel 102 and the inner wall of the first channel 102, and the lower end of the protruding portion 82 is located in the first containing space 15.

[0059] This is the preferred structure of the rotor of the present application, by the protruding portion provided thereon, a thin end is formed to be inserted into the first channel of the pipe joint, the second channel penetrates from the protruding portion to the inside of the rotor body, which can make the second channel communicate with the first channel to conduct the fluid while reducing the length of the leakage position by the depth of the protruding portion inserted into the first channel, further gap leakage, effectively guiding the leaked fluid into the first containing space.

[0060] In some embodiments,

[0061] The pipeline disc 4 is annular structure, the drain port 402 is from the radial inner wall of the pipeline disc 4 of annular structure to the radial outer wall, the inner periphery of the pipeline disc 4 has the liquid storage groove 401, the drain port 402 is communicated with the liquid storage groove 401 (the drain port is preferably located at the lower end of the liquid storage groove), the floating cylinder 3 is located in the liquid storage groove 401, the liquid passage 301 is communicated with the liquid storage groove 401 (the liquid storage groove is preferably located below the liquid passage), so that the liquid passage 301 is communicated with the drain port 402 through the liquid storage groove 401.

[0062] This is the preferred structure of the pipeline disc of the application, through the annular structure of the pipeline disc and through the drain port penetrated in the radial direction thereon, and the liquid storage groove of the inner periphery of the pipeline disc can play a certain storage effect on the fluid flowing down the liquid passage, prevent the situation that the leakage liquid directly goes down under the action of gravity to enter the main shaft motor and bearing without being discharged from the drain port, and ensure that the leakage liquid can be effectively and reliably discharged to the outside of the main shaft.

[0063] As shown in the drawings, Figure 1 The pipeline disc 4 of the application is provided with a liquid storage groove 401, which is preferably an annular groove, facilitating temporary storage of the leakage liquid when a large amount of leakage occurs, blocking the leakage liquid in the liquid storage groove 401, and avoiding the leakage liquid from entering the inside of the main shaft beyond the pipeline disc 4.

[0064] As shown in the drawings, Figure 1 The pipeline disc 4 is preferably provided with at least one drain port 402 in the circumferential direction, which is communicated with the bottom of the liquid storage groove 401, for discharging the liquid in the liquid storage groove 401.

[0065] The shape of the drain port 402 of the application is not limited, which can be any shape such as a round hole, a square hole, etc., as long as it can realize the function of discharging the liquid in the main shaft.

[0066] As shown in the drawings, Figure 1 And Figure 2 The floating cylinder 3 of the application is installed above the liquid storage groove 401 of the pipeline disc 4, and the floating cylinder 3 is provided with at least one liquid passage 301 in the circumferential direction, which is communicated with the floating cylinder 3 and the liquid storage groove 401, so that the leakage liquid entering the floating cylinder 3 can flow to the liquid storage groove 401.

[0067] The shape of the liquid passage of the application is not limited, which can be any shape such as a round hole, a square hole, etc., as long as it can realize the function of flowing the liquid in the main shaft.

[0068] In some embodiments,

[0069] Further comprising a compression ring 5, the compression ring 5 is arranged on the outer periphery of the part structure of the rotor 8, and at least part of the structure of the compression ring 5 is located on the radial inner side of the floating cylinder 3 in the radial direction of the rotor 8, at least part of the structure of the compression ring 5 is located on the radial inner side of the pipeline disc 4 in the radial direction of the rotor 8, the upper end of the compression ring 5 extends to the first preset distance to the radial outer side and then extends to the second preset distance downward to form the first clamping part 51, the bottom end of the floating cylinder 3 extends to the third preset distance to the radial inner side to form the second clamping part 31, the second clamping part 31 is located below the first clamping part 51, and the two can form axial limiting.

[0070] The present application can also compress the upper end of the main shaft body and the protruding part through the arrangement of the compression ring, and the present application can also form axial limiting between the two clamping parts through the first clamping part formed by extending the upper end of the compression ring to the radial outer side and downward, and the second clamping part formed by extending the bottom end of the floating cylinder to the radial inner side, so that the floating cylinder is not too high when it floats upward during the loosening process, and the first clamping part can effectively limit it to prevent safety hazards.

[0071] The rotary joint (pipe joint 1) of the present application is installed on the oil cylinder cover 2 and communicates with the rotor 8, and when the pipe joint 1 is in normal working state, the cooling liquid will enter the rotor 8 along the pipe joint 1, so as to realize the center water outlet function; when the pipe joint 1 is suddenly damaged, the cooling liquid cannot enter the rotor 8 smoothly, and will enter the main shaft from the leakage position 101, if there is no waterproof structure, the leaked cooling liquid will enter the rear bearing 6 and the motor 7 along the gap between the parts, and then cause the damage of the rear bearing 6 and the motor 7, and increase the maintenance cost of the main shaft in the later period, therefore, the waterproof structure arranged at the rear end of the main shaft of the present application protects the rear bearing 6 and the motor 7.

[0072] The waterproof structure at the rear end of the main shaft of the present application comprises a pipe joint 1, an oil cylinder cover 2, a floating cylinder 3, a pipeline disc 4 and a compression ring 5. Figure 1 As shown in the figure, the pipe joint 1 is installed on the oil cylinder cover 2, and the floating cylinder 3 is located below the oil cylinder cover 2, once the pipe joint 1 leaks, the leaked liquid will enter the floating cylinder 3 along the oil cylinder cover 2, then enter the liquid storage groove 401 of the pipeline disc 4 from the liquid passing opening 301 of the floating cylinder 3, and finally flow out from the drainage opening 402.

[0073] In some embodiments,

[0074] The pipeline disc 4 further comprises a radially inner portion 403, which is located radially inward of the discharge port 402 and is connected to at least part of the structure of the discharge port 402, and which extends radially inward to be spaced from the compression ring 5, and which is located below the bottom of the floating cylinder 3, and the upper end of the radially inner portion 403 forms the liquid storage groove 401 with the inner periphery of the pipeline disc 4.

[0075] The present application further forms the bottom of the liquid storage groove through the radially inner portion of the pipeline disc, which is spaced from the compression ring, to ensure that the liquid flowing through the liquid outlet above can enter the inside of the liquid storage groove, and the upper end surface of the radially inner portion is preferably lower than the upper end surface of the discharge port, so that the liquid in the liquid storage groove can be effectively discharged to the outside of the main shaft through the discharge port.

[0076] In some embodiments,

[0077] In the radial direction, the first clamping portion 51 of the compression ring 5 and the main body periphery of the compression ring 5 form a first gap 16, and the second clamping portion 31 of the floating cylinder 3 and the main body periphery of the compression ring 5 form a second gap 17.

[0078] The pipeline disc 4 further comprises a third clamping portion 404, the lower end of which is connected to the radially inner end of the radially inner portion 403, and the upper end of which extends upward to be inserted into the second gap 17 and the first gap 16 in sequence.

[0079] This is a further preferred structure of the pipeline disc of the present application, which can also limit the compression ring through the third clamping portion, and at the same time seal the radially inner side of the floating cylinder to prevent water entering the liquid storage groove from entering the inside of the main shaft from the radially inner side, and can further play a waterproof sealing role.

[0080] The liquid storage groove of the pipeline disc of the present application and the floating cylinder and the compression ring preferably further form a labyrinth seal to prevent splashing of leaked liquid into the inside of the main shaft;

[0081] The rotor and the compression ring of the present application are preferably provided with a sealing ring to prevent leaked liquid from entering the inside of the main shaft along the gap between the rotor and the compression ring.

[0082] In some embodiments,

[0083] Further comprising an oil cylinder 11, an oil cylinder cover 2 and a spring cover 13, the oil cylinder cover 2 is arranged at the upper end of the oil cylinder 11, the oil cylinder 11 is arranged at the upper end of the floating cylinder 3, the oil cylinder cover 2, the oil cylinder 11 and the floating cylinder 3 are connected as a whole and can be integrally floated up and down, the spring cover 13 is arranged above the oil cylinder cover 2, and the spring cover 13 is fixed, and an elastic structure 12 is further arranged between the spring cover 13 and the oil cylinder cover 2, which can provide an elastic thrust to the oil cylinder cover 2;

[0084] When the loosening process is performed, the oil cylinder cover 2, the oil cylinder 11 and the floating cylinder 3 move integrally upward, the elastic structure 12 provides an elastic thrust downward to the oil cylinder cover 2, so as to reduce the impact force of the second clamping part 31 of the floating cylinder 3 on the first clamping part 51 of the compression ring 5; when the pulling process is performed, the oil cylinder cover 2, the oil cylinder 11 and the floating cylinder 3 move integrally downward, and the second clamping part 31 of the floating cylinder 3 is disengaged from the first clamping part 51 of the compression ring 5.

[0085] The spring cover arranged at the upper end of the oil cylinder cover can limit the upward movement of the oil cylinder cover, and the elastic structure between the spring cover and the oil cylinder cover can provide an elastic force downward to the upward movement of the oil cylinder cover, so as to reduce the impact between the second clamping part of the floating cylinder and the first clamping part of the compression ring during the loosening process of the main shaft, and further reduce the impact of the piston movement on the main shaft, so as to eliminate the movement of the shaft center, further improve the service life of the main shaft, and the oil cylinder cover, the floating cylinder and the oil cylinder move integrally downward during the pulling process of the main shaft, and the distance between the two clamping parts gradually increases.

[0086] As shown in the Figure 1 The oil cylinder cover 2 of the present application is a hollow rotary body with a large upper end and a small lower end, a pipe joint 1 is installed at the large end of the oil cylinder cover 2, and a leakage position 101 is located at the small end of the oil cylinder cover 2, so as to ensure that the cooling liquid can flow downward along the oil cylinder cover 2 when leakage occurs, and does not enter other oil cylinder positions.

[0087] In some embodiments,

[0088] Further comprising a piston 10 arranged at the lower end of the oil cylinder cover 2 and located at the radial inner periphery of the oil cylinder 11, a piston oil inlet channel 201 is formed in the oil cylinder cover 2, which can guide oil into the space between the oil cylinder cover 2 and the piston 10, so as to push the piston 10 to move downward and simultaneously push the oil cylinder cover 2, the oil cylinder 11 and the floating cylinder 3 to move integrally upward when the loosening process is performed;

[0089] The oil cylinder cover 2 is provided with a piston oil inlet channel 201, a piston gas inlet channel 202 and a compression spring mounting hole.

[0090] The piston oil inlet channel 201, the piston gas inlet channel 202 and the compression spring mounting hole are designed on the oil cylinder cover 2.

[0091] Compared with the prior art of the floating cylinder, the oil cylinder and the oil cylinder cover body being fixed (the floating cylinder being fixed to the pipeline disc 4), the floating cylinder 3, the oil cylinder 11 and the oil cylinder cover 2 are set as an integrated body that can float up and down, the piston is driven to move downward when oil is introduced, the oil cylinder cover body is driven to move upward in the opposite direction, the impact force between the lower end of the floating cylinder 3 and the compression ring 5 is greatly reduced under the buffering effect of the spring elastic force, and the process is the loosening process; the process of pulling the tool is that gas is introduced, the piston is driven to move upward, the oil cylinder cover body is driven to move downward in the opposite direction (the oil cylinder and the floating cylinder are integrated), and the floating cylinder 3 is separated from the compression ring 5.

[0092] The oil cylinder assembly at the rear end of the main shaft is composed of an oil cylinder cover 2, a floating cylinder 3, a pipeline disc 4, a compression ring 5, a piston 10, an oil cylinder 11, an oil cylinder fixing seat 14, a spring cover 13 and a compression spring (elastic structure 12), and the oil cylinder assembly is installed on the pipeline disc 4.

[0093] When the piston moves toward the nose end of the main shaft, the floating cylinder, the oil cylinder and the oil cylinder cover body float in the opposite direction of the piston under the action of the compression spring and gravity until the floating cylinder is attached to the rear end locking ring, so as to reduce the impact of the piston movement on the main shaft during the loosening of the main shaft, eliminate the shaft core movement and improve the service life of the main shaft.

[0094] When the main shaft broach, the high pressure gas enters into the gas storage groove of the inner end face of the oil cylinder through the piston inlet channel of the oil cylinder cover body and the oil cylinder, and forms the pressure to push the piston to move away from the nose end of the main shaft (the piston moves upward, the floating cylinder, the oil cylinder and the oil cylinder cover body move downward, and the floating cylinder is separated from the compression ring 5), and the pull rod is separated, and the broaching action is completed.

[0095] When the broach is loosened, the floating cylinder, the oil cylinder, the oil cylinder cover and the like float in the opposite direction of the piston movement under the action of the compression spring and gravity until the floating cylinder 3 is attached to the compression ring 5, so as to reduce the impact of the piston movement on the main shaft (when the broach is loosened, the piston moves downward, the floating cylinder and the like move upward, the compression ring 5 is fixed to the main shaft, and the downward elastic thrust is provided by the spring, so that the floating cylinder and the like are buffered during the upward movement, and the impact force of the floating cylinder 3 on the compression ring 5 is reduced), the shaft core movement is eliminated, and the service life of the main shaft is improved.

[0096] When the broach is loosened, the floating cylinder 3, the oil cylinder 11, the oil cylinder cover 2 and the like float in the opposite direction of the piston movement under the action of the compression spring and gravity (at this time, the piston moves upward, and the floating cylinder 3, the oil cylinder 11 and the oil cylinder cover 2 move downward), until the floating cylinder 3 is separated from the compression ring 5, so that the main shaft can rotate normally.

[0097] In some embodiments,

[0098] The piston oil inlet joint 18 is inserted into the inside of the oil cylinder cover 2 from the outside of the spring cover 13, and the inside channel of the piston oil inlet joint 18 is in communication with the piston oil inlet channel 201, so that oil is supplied to the piston oil inlet channel 201 from the outside.

[0099] The piston gas inlet joint 19 is inserted into the inside of the oil cylinder cover 2 from the outside of the spring cover 13, and the piston gas inlet auxiliary channel 20 is located in the inside of the oil cylinder 11, and the inside channel of the piston gas inlet joint 19 is in communication with the piston gas inlet channel 202 and the piston gas inlet auxiliary channel 20 in sequence.

[0100] The piston oil inlet joint 18 is inserted into the inside of the oil cylinder cover 2 from the outside of the spring cover 13, and the inside channel of the piston oil inlet joint 18 is in communication with the piston oil inlet channel 201, so that oil is supplied to the piston oil inlet channel 201 from the outside.

[0101] The above merely describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above merely describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A vertical spindle characterized by: The application relates to a vertical spindle comprising a pipe joint (1) and a rotor (8), the pipe joint (1) has a first channel (102) in the interior, the rotor (8) has a second channel (801) in the interior, the rotor (8) is arranged with the axis in the vertical direction, the pipe joint (1) is arranged at the upper end of the rotor (8), so that the first channel (102) and the second channel (801) are communicated, the second channel (801) of the rotor (8) can be supplied with cooling fluid through the first channel (102) of the pipe joint (1), and the pipe joint (1) and the rotor (8) have a leakage position (101) at the joint. The application further comprises a floating cylinder (3) and a pipe disc (4), the floating cylinder (3) is arranged below the pipe joint (1) and at the outer periphery of the rotor (8), the pipe disc (4) is arranged at the outer periphery of the floating cylinder (3), the floating cylinder (3) is provided with a liquid passing opening (301), the pipe disc (4) is provided with a discharge opening (402), one end of the liquid passing opening (301) can receive the fluid leaked from the leakage position (101), and the other end can be communicated with the discharge opening (402) to discharge the leaked fluid. The application further comprises a compression ring (5), the compression ring (5) is arranged at the outer periphery of part of the structure of the rotor (8), at least part of the structure of the compression ring (5) is located in the radial direction of the rotor (8) and is located in the radial direction of the floating cylinder (3), at least part of the structure of the compression ring (5) is located in the radial direction of the rotor (8) and is located in the radial direction of the pipe disc (4), the upper end of the compression ring (5) extends to the first preset distance in the radial direction and then extends to the second preset distance downwards, thereby forming a first clamping part (51), the bottom end of the floating cylinder (3) extends to the third preset distance in the radial direction, thereby forming a second clamping part (31), the second clamping part (31) is located below the first clamping part (51), and the two can form axial limiting. The pipe disc (4) further comprises a radial inner side part (403), the radial inner side part (403) is located in the radial inner side of the discharge opening (402), in the radial direction, the first clamping part (51) of the compression ring (5) and the main body outer periphery of the compression ring (5) form a first gap (16), the second clamping part (31) of the floating cylinder (3) and the main body outer periphery of the compression ring (5) form a second gap (17), the pipe disc (4) further comprises a third clamping part (404), the lower end of the third clamping part (404) is connected to the radial inner end of the radial inner side part (403), and the upper end of the third clamping part (404) extends upwards to be inserted into the second gap (17) and the first gap (16) in sequence.

2. The vertical spindle according to claim 1, characterized in that: ​ The floating cylinder (3) is annular structure, the liquid passage (301) from annular structure of the floating cylinder (3) of the radial inner wall to the radial outer wall, the inner circumference of the floating cylinder (3) and the rotor (8) form the first containing space (15), the first containing space (15) is located below the pipe joint (1), the leakage site (101) and the first containing space (15) are communicated, so that the fluid leaked at the leakage site (101) can flow into the first containing space (15).

3. The vertical spindle according to claim 2, characterized in that: The rotor (8) includes a rotor body (81) and a protruding portion (82) located at the upper end of the rotor body (81), the upper end of the protruding portion (82) is inserted into the first channel (102), and the second channel (801) penetrates from the protruding portion (82) to the inside of the rotor body (81); the leakage site (101) is the gap formed between the outer wall of the part of the protruding portion (82) inserted into the first channel (102) and the inner wall of the first channel (102), and the lower end of the protruding portion (82) is located in the first containing space (15).

4. The vertical spindle according to any one of claims 1-3, characterized in that: The pipe disc (4) is annular structure, the drain port (402) from annular structure of the pipe disc (4) of the radial inner wall to the radial outer wall, the inner circumference of the pipe disc (4) has a liquid storage groove (401), the drain port (402) and the liquid storage groove (401) are communicated, the floating cylinder (3) is located in the liquid storage groove (401), the liquid passage (301) and the liquid storage groove (401) are communicated, so that the liquid passage (301) is communicated with the drain port (402) through the liquid storage groove (401).

5. The vertical spindle according to claim 4, characterized in that: The radial inner side portion (403) is opposite to and connected with at least part of the structure of the drain port (402), the radial inner side portion (403) extends to the radial inner side thereof to be spaced from the compression ring (5), the radial inner side portion (403) is located below the bottom of the floating cylinder (3), and the upper end of the radial inner side portion (403) forms the liquid storage groove (401) with the inner circumference of the pipe disc (4).

6. The vertical spindle according to claim 1, characterized in that: Further comprising a cylinder (11), a cylinder cover (2) and a spring cover (13), the cylinder cover (2) is arranged at the upper end of the cylinder (11), the cylinder (11) is arranged at the upper end of the floating cylinder (3), the cylinder cover (2), the cylinder (11) and the floating cylinder (3) are connected as a whole and can be integrally floated up and down, the spring cover (13) is arranged above the cylinder cover (2), and the spring cover (13) is fixed, and an elastic structure (12) is further arranged between the spring cover (13) and the cylinder cover (2), the elastic structure (12) can provide an elastic thrust to the cylinder cover (2); When the loosening process is performed, the cylinder cover (2), the cylinder (11) and the floating cylinder (3) move integrally upward, the elastic structure (12) provides an elastic thrust downward to the cylinder cover (2), so as to reduce the impact force of the second clamping part (31) of the floating cylinder (3) on the first clamping part (51) of the compression ring (5); when the pulling process is performed, the cylinder cover (2), the cylinder (11) and the floating cylinder (3) move integrally downward, and the second clamping part (31) of the floating cylinder (3) is disengaged from the first clamping part (51) of the compression ring (5).

7. The vertical spindle according to claim 6, characterized in that: Further comprising a piston (10), the piston (10) is arranged at the lower end of the cylinder cover (2) and located at the radial inner periphery of the cylinder (11), a piston oil inlet channel (201) is arranged on the cylinder cover (2), the piston oil inlet channel (201) can guide oil into the space between the cylinder cover (2) and the piston (10), so as to push the piston (10) to move downward and simultaneously push the cylinder cover (2), the cylinder (11) and the floating cylinder (3) to move integrally upward when the loosening process is performed; A piston gas inlet channel (202) is arranged on the cylinder cover (2), the piston gas inlet channel (202) can guide gas into the space between the cylinder (11) and the piston (10), so as to push the piston (10) to move upward and simultaneously push the cylinder cover (2), the cylinder (11) and the floating cylinder (3) to move integrally downward when the pulling process is performed.

8. The vertical spindle according to claim 7, characterized in that: Further comprising a piston oil inlet joint (18), the piston oil inlet joint (18) is inserted from the outside of the spring cover (13) into the inside of the cylinder cover (2), and the inside channel of the piston oil inlet joint (18) is communicated with the piston oil inlet channel (201), so as to guide oil into the piston oil inlet channel (201) from the outside. The piston intake joint (19) is inserted into the inside of the oil cylinder cover (2) from the outside of the spring cover (13), and the piston intake auxiliary channel (20) is located in the inside of the oil cylinder (11), and the inside channel of the piston intake joint (19) is communicated with the piston intake channel (202) and the piston intake auxiliary channel (20) in sequence.

Images