Brake shoe welding tool
Technical Field
The invention relates to the technical field of tool fixtures, in particular to a brake shoe welding tool.
Background
The brake shoe is a part which is pushed outwards by the action of a brake cam or a push rod to expand and press a brake drum to play a braking role, is arranged on the brake drum, and is one of key safety parts in an automobile braking system. The brake shoes are half-moon-shaped, and when a brake is stepped on, the two half-moon-shaped brake shoes are outwards expanded under the action of the brake wheel cylinders to support the brake shoes to rub the inner wall of the brake drum to play a role in speed reduction or parking.
A pair of shoe plates are welded on the lining plate in the welding process of the brake shoe, the shoe plates and the lining plate are abutted together usually in a manual fixing mode, the working efficiency is low, the labor waste is large, and certain damage is easily caused to workers in the welding process.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a brake shoe welding tool, and the technical scheme solves the problems, has the advantages of accurate positioning, good processing effect, simple structure, easiness in realization, cost saving, reduction of the labor intensity of workers and labor saving.
In order to solve the technical problems, the invention provides the following technical scheme:
a brake shoe welding tool is fixed by utilizing a positioning hole on a lining and a groove on a shoe plate, and a pair of shoe plates are welded on the lining to form a complete brake shoe, and is characterized by comprising a fixing frame, a shoe plate positioning assembly, a lining positioning assembly and a pressing mechanism;
the fixing frame is of an Contraband-shaped structure, the shoe positioning assembly, the lining positioning assembly and the pressing mechanism are arranged on the inner side of the fixing frame, the shoe positioning assembly and the pressing mechanism are fixedly connected with the fixing frame, the lining positioning assembly is fixedly connected with the movable end of the pressing mechanism, the moving direction of the lining positioning assembly during working points to the direction of the shoe positioning assembly, the lining positioning assembly is further connected with the fixed end of the pressing mechanism in a sliding mode, the shoe positioning assembly is fixedly connected with two grooves in the shoe in a clamping mode in a working state, one part of the lining positioning assembly abuts against the outer arc surface of the lining, and the other part of the lining positioning assembly is inserted into a pair of positioning holes in the lining.
As a preferred scheme of a brake shoe welding tool, the shoe plate positioning assembly comprises a horizontal fixing plate, a vertical plate and a groove inlet fixing bolt; horizontal fixed plate and mount upside inner wall fixed connection, a pair of riser is fixed on horizontal fixed plate perpendicularly parallel to each other, advance groove fixing bolt both ends all with riser fixed connection, advance groove fixing bolt perpendicular to riser, advance groove fixing bolt sets up simultaneously a pair ofly and interval cooperation between the groove of advancing on interval and the hoof piece, one side that the hoof piece is close to each other under the operating condition is supported tightly by advancing groove fixing bolt, one side that the hoof piece was kept away from each other is supported tightly by the riser, advance the groove then with advance groove fixing bolt joint.
As a preferred scheme of a brake shoe welding tool, the groove-entering fixing bolt comprises a large-diameter section, a small-diameter section and a transition slope; the large-diameter section is located groove fixing bolt central position, and the little diameter section is in groove fixing bolt's both sides, and the domatic junction that is located large-diameter section and little diameter section of transition, groove joint is advanced under the operating condition on the little diameter section.
As a preferred scheme of a brake shoe welding tool, the shoe positioning assembly further comprises a lining plate abutting block; the gasket abutting block is vertically fixed on the horizontal fixing plate, one end, facing the direction of the gasket positioning assembly, of the gasket abutting block is of an inclined surface structure, and the end portion of the groove-entering fixing bolt and the end portion of the gasket are abutted to each other in the working state.
As a preferred scheme of a brake shoe welding tool, the lining positioning assembly comprises a lining fixing frame, a fixing saddle and an inserting rod; the lining fixing frame is horizontally arranged, the pair of fixing saddles are vertically fixed at the upper end of the lining fixing frame in parallel, the pair of insertion rods are vertically fixed at the upper end of the lining fixing frame, the distance between the insertion rods and the positioning holes on the lining is matched, the insertion rods and the positioning holes are in clearance fit in a working state, the bottom of the lining fixing frame is fixedly connected with the upper end of the pressing mechanism, and the side wall of the lining fixing frame is in sliding connection with the pressing mechanism.
As a preferred scheme of a brake shoe welding tool, the pressing mechanism comprises a guide plate, a dovetail groove, a linear driver, a driving supporting plate and a guide bolt; the guide plate is fixedly installed on the inner wall, far away from the opening, of the fixing frame, the dovetail groove is arranged along the length direction of the guide plate, the dovetail groove is in sliding connection with the lining positioning assembly, the linear driver is fixedly installed on the upper end face of the bottom of the fixing frame, the driving supporting plate is vertically fixed on the output end of the linear driver, the upper end of the guide bolt is fixedly connected with the bottom of the lining positioning assembly, the lower end of the guide bolt is in clearance fit with the driving supporting plate, and the reset spring is sleeved on the guide bolt and is arranged between the.
Compared with the prior art, the invention has the beneficial effects that:
the staff will make its work end bring facing positioning assembly and keep away from shoe positioning assembly through control hold-down mechanism manual earlier, and then the staff makes facing extrados both sides overlap joint on facing positioning assembly and make facing positioning assembly partly insert the locating hole on the facing, makes the facing unable emergence deflection from this. The staff utilizes and advances the groove with a pair of shoes joint each other parallelly on the shoes locating component to make it can't take place lateral shifting. Then the staff control hold-down mechanism makes its work end bring the facing positioning component and be close to hoof piece positioning component for the facing is close to the hoof piece, and the intrados butt joint of final facing is on the extrados of hoof piece, produces the interact between the two and has further restricted the motion of hoof piece, and facing and hoof piece reciprocal anchorage are accomplished. The pressing mechanism provides a guiding function for the lining positioning assembly in the moving process, and the stability of the structure is ensured.
1. The positioning is accurate, and the processing effect is good;
2. the structure is simple, the realization is easy, and the cost is saved;
3. the labor intensity of workers is reduced, and the labor is saved.
Drawings
FIG. 1 is a perspective view of the present invention with a brake shoe secured thereto;
FIG. 2 is a first perspective view of the present invention;
FIG. 3 is a second perspective view of the present invention;
FIG. 4 is a front view of the present invention;
FIG. 5 is a partial perspective view of the present invention;
FIG. 6 is a perspective view of a brake shoe secured in accordance with the present invention.
The reference numbers in the figures are:
1. a brake shoe; 1a, a lining; 1b, positioning holes; 1c, shoe sheets; 1d, feeding into a groove;
2. a fixed mount;
3. a shoe positioning assembly; 3a, a horizontal fixing plate; 3b, a vertical plate; 3c, fixing the bolt in the groove; 3c1, large diameter section; 3c2, small diameter section; 3c3, transition ramp; 3d, a lining abutting block;
4. a lining positioning assembly; 4a, a lining fixing frame; 4b, a fixed saddle; 4c, inserting the rod;
5. a hold-down mechanism; 5a, a guide plate; 5b, dovetail grooves; 5c, a linear driver; 5d, driving the supporting plate; 5e, a guide bolt; 5f and a return spring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1 to 5, a brake shoe welding fixture fixes a pair of shoe plates 1c to a lining 1a by using positioning holes 1b on the lining 1a and grooves 1d on the shoe plates 1c to form a complete brake shoe 1, and comprises a fixing frame 2, a shoe plate positioning assembly 3, a lining positioning assembly 4 and a pressing mechanism 5;
mount 2 is "Contraband" type structure, hoof piece locating component 3, facing locating component 4 and hold-down mechanism 5 all set up at mount 2 inboardly, hoof piece locating component 3 and hold-down mechanism 5 all with mount 2 fixed connection, facing locating component 4 and 5 movable end fixed connection of hold-down mechanism and the motion direction of during operation point to 3 directions of hoof piece locating component, facing locating component 4 still with hold-down mechanism 5's stiff end sliding connection, hoof piece locating component 3 is fixed with two grooves 1d joint of advancing on the hoof piece 1c under the operating condition, 4 partly butts in facing 1a extrados of facing locating component, another part of facing locating component 4 inserts in a pair of locating hole 1b on facing 1 a.
The worker manually enables the working end of the worker to be far away from the shoe positioning component 3 with the lining positioning component 4 by controlling the pressing mechanism 5, then the worker overlaps the two sides of the outer arc surface of the lining 1a on the lining positioning component 4 and enables a part of the lining positioning component 4 to be inserted into the positioning hole 1b in the lining 1a, and therefore the lining 1a cannot deflect. The worker uses the slot 1d to clamp the pair of shoes 1c on the shoe positioning component 3 in parallel so that the shoes cannot move laterally. Then, the worker controls the pressing mechanism 5 to enable the working end of the pressing mechanism to bring the lining positioning component 4 to be close to the shoe positioning component 3, so that the lining 1a is close to the shoe 1c, finally, the inner arc surface of the lining 1a abuts against the outer arc surface of the shoe 1c, interaction is generated between the lining 1a and the shoe 1c, movement of the shoe 1c is further limited, and the lining 1a and the shoe 1c are mutually fixed. The pressing mechanism 5 provides a guiding function for the substrate positioning assembly 4 during movement, and ensures the stability of the structure.
The shoe positioning component 3 comprises a horizontal fixing plate 3a, a vertical plate 3b and a groove inlet fixing bolt 3 c; horizontal fixed plate 3a and 2 upside inner walls fixed connection of mount, a pair of riser 3b is fixed on horizontal fixed plate 3a perpendicularly parallel to each other, advance groove fixing bolt 3c both ends all with riser 3b fixed connection, advance groove fixing bolt 3c perpendicular to riser 3b, advance groove fixing bolt 3c and set up simultaneously a pair of and interval and the cooperation of the interval between the groove of advancing 1d on the shoe 1c, one side that shoe 1c is close to each other under the operating condition is supported tightly by advancing groove fixing bolt 3c, one side that shoe 1c kept away from each other is supported tightly by riser 3b, it then with advancing groove fixing bolt 3c joint to advance groove 1 d.
The horizontal fixing plate 3a is used for fixing the vertical plate 3b, and the vertical plate 3b and the groove-entering fixing bolt 3c fix the shoe 1c together so that the shoe 1c cannot move horizontally, so that the pair of shoes 1c are at the same height and are parallel to each other.
The groove-entering fixing bolt 3c comprises a large-diameter section 3c1, a small-diameter section 3c2 and a transition slope surface 3c 3; the large-diameter section 3c1 is located at the center of the groove inlet fixing bolt 3c, the small-diameter section 3c2 is located at two sides of the groove inlet fixing bolt 3c, the transition slope 3c3 is located at the connection position of the large-diameter section 3c1 and the small-diameter section 3c2, and the groove inlet 1d is clamped on the small-diameter section 3c2 in the working state.
The groove-shaped structure formed by the large-diameter section 3c1, the small-diameter section 3c2 and the vertical plate 3b fixes the shoe 1c, the groove 1d is conveniently clamped into the structure of the transition slope 3c3, the deviation of the shoe 1c caused by the error in size is avoided, and the fixing effect is further improved.
The shoe positioning component 3 further comprises a lining plate abutting block 3 d; the lining abutting block 3d is vertically fixed on the horizontal fixing plate 3a, one end of the lining abutting block 3d facing the direction of the lining positioning assembly 4 is of an inclined surface structure, and the end part of the groove-entering fixing bolt 3c and the end part of the lining 1a abut against each other in the working state.
The shoe positioning component 3 is additionally provided with the lining abutting block 3d, so that the abutting effect can be achieved on the end part of the shoe 1c when the lining 1a and the shoe 1c are close to each other, and the fixing effect is further improved.
The lining positioning component 4 comprises a lining fixing frame 4a, a fixing saddle 4b and an inserting rod 4 c; the lining fixing frame 4a is horizontally arranged, the pair of fixing saddles 4b are vertically fixed at the upper end of the lining fixing frame 4a in parallel, the pair of inserting rods 4c are vertically fixed at the upper end of the lining fixing frame 4a, the distance between the inserting rods 4c and the positioning holes 1b on the lining 1a is matched, the inserting rods 4c are in clearance fit with the positioning holes 1b in a working state, the bottom of the lining fixing frame 4a is fixedly connected with the upper end of the pressing mechanism 5, and the side wall of the lining fixing frame 4a is in sliding connection with the pressing mechanism 5.
The lining fixing frame 4a provides support for the fixing saddle 4b and the inserted bar 4 c; the insert rod 4c is inserted into the positioning hole 1b in the lining 1a, so that the lining 1a can be effectively prevented from deflecting, and the fixing saddle 4b is utilized to support the outer arc surface of the lining 1a, so that the stability of the structure is improved, and the insert rod 4c can be protected.
The pressing mechanism 5 comprises a guide plate 5a, a dovetail groove 5b, a linear driver 5c, a driving supporting plate 5d and a guide bolt 5 e; guide plate 5a fixed mounting is on the inner wall of mount 2 keeping away from the opening part, dovetail 5b sets up along guide plate 5a length direction, dovetail 5b and facing locating component 4 sliding connection, linear actuator 5c fixed mounting is on mount 2 bottom up end, drive layer board 5d vertical fixation is on linear actuator 5c output, guide bolt 5e upper end and facing locating component 4 bottom fixed connection, guide bolt 5e lower extreme and drive layer board 5d clearance fit, reset spring 5f cup joints on guide bolt 5e and between facing locating component 4 and drive layer board 5 d.
The linear actuator 5c is a double-shaft double-rod cylinder, and the occurrence of the rotation of the driving supporting plate 5d around the axis of the linear actuator 5c is avoided. The dovetail groove 5b guides the lining positioning assembly 4 while preventing the lining positioning assembly 4 from being separated from the guide plate 5a during movement. The staff push and pull the driving pallet 5d by controlling the linear driver 5 c. The elastic structure that guide bolt 5e, reset spring 5f formed on drive layer board 5d play buffering absorbing effect, avoid causing too big impact to facing 1a and hoof piece 1c, guide bolt 5e then drives facing locating component 4 and is close to or keeps away from hoof piece locating component 3.
The working principle of the invention is as follows:
the worker manually enables the working end of the worker to be far away from the shoe positioning component 3 with the lining positioning component 4 by controlling the pressing mechanism 5, then the worker overlaps the two sides of the outer arc surface of the lining 1a on the lining positioning component 4 and enables a part of the lining positioning component 4 to be inserted into the positioning hole 1b in the lining 1a, and therefore the lining 1a cannot deflect. The worker uses the slot 1d to clamp the pair of shoes 1c on the shoe positioning component 3 in parallel so that the shoes cannot move laterally. Then, the worker controls the pressing mechanism 5 to enable the working end of the pressing mechanism to bring the lining positioning component 4 to be close to the shoe positioning component 3, so that the lining 1a is close to the shoe 1c, finally, the inner arc surface of the lining 1a abuts against the outer arc surface of the shoe 1c, interaction is generated between the lining 1a and the shoe 1c, movement of the shoe 1c is further limited, and the lining 1a and the shoe 1c are mutually fixed. The pressing mechanism 5 provides a guiding function for the substrate positioning assembly 4 during movement, and ensures the stability of the structure.